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2018

Alexander, P., Schmidt, T., de la Torre, A.: A Method to Determine Gravity Wave Net Momentum Flux, Propagation Direction, and “Real” Wavelengths: A GPS Radio Occultations Soundings Case Study, Earth and Space Science, 5, 6, pp. 222—230, https://doi.org/10.1002/2017EA000342


Alshawaf, F., Zus, F., Balidakis, K., Deng, Z., Hoseini, M., Dick, G., Wickert, J.: On the Statistical Significance of Climatic Trends Estimated From GPS Tropospheric Time Series, Journal of Geophysical Research, 123, 19, pp. 10,967—10,990, https://doi.org/10.1029/2018JD028703


Arras, C., Wickert, J.: Estimation of ionospheric sporadic E intensities from GPS radio occultation measurements, Journal of Atmospheric and Solar-Terrestrial Physics, 171, pp. 60—63, http://doi.org/10.1016/j.jastp.2017.08.006


Asgarimehr, M., Wickert, J., Reich, S.: TDS-1 GNSS Reflectometry: Development and Validation of Forward Scattering Winds, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 11,  pp. 4534—4541, http://doi.org/10.1109/JSTARS.2018.2873241


Asgarimehr, M., Zavorotny, V., Wickert, J., Reich, S.: Can GNSS Reflectometry Detect Precipitation Over Oceans?, Geophysical Research Letters, 45, 22, pp. 12,585—12, 592, http://doi.org/10.1029/2018GL079708


Balidakis, K., Nilsson, T., Zus, F., Glaser, S., Heinkelmann, R., Deng, Z., Schuh, H.: Estimating Integrated Water Vapor Trends From VLBI, GPS, and Numerical Weather Models: Sensitivity to Tropospheric Parameterization, Journal of Geophysical Research, 123, 12, pp., 6356—6372, http://doi.org/10.1029/2017JD028049


Cardellach, E., Wickert, J., Baggen, R., Benito, J., Camps, A., Catarino, N., Chapron, B., Dielacher, A., Fabra, F., Flato, G., Fragner, H., Gabarró, C., Gommenginger, C., Haas, C., Healy, S., Hernandez-Pajares, M., Høeg, P., Jäggi, A., Kainulainen, J., Khan, S. A., Lemke, N. M., Li, W., Nghiem, S. V., Pierdicca, N., Portabella, M., Rautiainen, K., Rius, A., Sasgen, I., Semmling, M., Shum, C., Soulat, F., Steiner, A. K., Tailhades, S., Thomas, M., Vilaseca, R., Zuffada, C.: GNSS Transpolar Earth Reflectometry exploriNg system (G-TERN): Mission concept, IEEE Access, 6, pp. 13980—14018, http://doi.org/10.1109/ACCESS.2018.2814072


Chen, X., Lu, C., Guo, B., Guo, F., Ge, M., Li, X., Schuh, H.: GPS/GLONASS Combined Precise Point Positioning With the Modeling of Highly Stable Receiver Clock in the Application of Monitoring Active Seismic Deformation, Journal of Geophysical Research, 123, 5, pp., 4025-4040, https://doi.org/10.1029/2017JB015060


de la Torre, A., Alexander, P., Schmidt, T., Llamedo, P., Hierro, R.: On the distortions in calculated GW parameters during slanted atmospheric soundings, Atmospheric Measurement Techniques, 11, pp. 1363—1375, https://doi.org/10.5194/amt-11-1363-2018


Heublein, M., Alshawaf, F., Erdnüß, B., Zhu, X. X., Hinz, S.: Compressive sensing reconstruction of 3D wet refractivity based on GNSS and InSAR observations, Journal of Geodesy, https://doi.org/10.1007/s00190-018-1152-0


Knížová, P. K., Yigit, E., Arras, C., Chang, L.: Preface of the special issue: “Vertical coupling in the atmosphere-ionosphere system: Recent progress”, Journal of Atmospheric and Solar-Terrestrial Physics, 171, pp. 1-2, http://doi.org/10.1016/j.jastp.2018.02.007


Li, X., Li, X., Yuan, Y., Zhang, K., Zhan, X., Wickert, J.: Multi-GNSS phase delay estimation and PPP ambiguity resolution: GPS, BDS, GLONASS, Galileo, Journal of Geodesy, 92, 6, pp. 579—608, https://doi.org/10.1007/s00190-017-1081-3


Li, X., Tan, H., Li, X., Dick, G., Wickert, J., Schuh, H.: Real-Time Sensing of Precipitable Water Vapor From BeiDou Observations: Hong Kong and CMONOC Networks, Journal of Geophysical Research, 123, 15, pp. 7897—7909, https://doi.org/10.1029/2018JD028320


Lu, C., Li, X., Cheng, J., Dick, G., Ge, M., Wickert, J., Schuh, H.: Real-Time Tropospheric Delay Retrieval from Multi-GNSS PPP Ambiguity Resolution: Validation with Final Troposphere Products and a Numerical Weather Model, Remote Sensing, 10, 3, https://doi.org/10.3390/rs10030481


Resende Chagas, L. C., Arras, C., Batista, I. S., Denardini, C. M., Bertollotto, T. O., Moro, J.: Study of sporadic E layers based on GPS radio occultation measurements and digisonde data over the Brazilian region, Annales Geophysicae, 36, pp. 587—593, https://doi.org/10.5194/angeo-36-587-2018


Schuh, H., Anderson, J., Beyerle, G., Dick, G., Flechtner, F., Förste, C., Ge, M., Glaser, S., Heinkelmann, R., König, R., Männel, B., Michaelis, I., Quinteros, J., Ramatschi, M., Rauberg, J., Rother, M., Schmidt, T., Stolle, C., Wickert, J.: Big Data in Geodäsie, Seismologie und Geomagnetismus, System Erde, 8, 1, http://doi.org/10.2312/GFZ.syserde.08.01.5


Tsai, L.-C., Su, S.-Y., Liu, C.-H., Schuh, H., Wickert, J., Alizadeh, M.: Global morphology of ionospheric sporadic E layer from the FormoSat-3/COSMIC GPS radio occultation experiment, GPS Solutions, 22, http://doi.org/10.1007/s10291-018-0782-2


Xie, J., Bertino, L., Cardellach, E., Semmling, M., Wickert, J.: An OSSE evaluation of the GNSS-R altimetry data for the GEROS-ISS mission as a complement to the existing observational networks, Remote Sensing of Environment, 209, pp. 152—165, http://doi.org/10.1016/j.rse.2018.02.053


Zhou, F., Dong, D., Ge, M., Li, P., Wickert, J., Schuh, H.: Simultaneous estimation of GLONASS pseudorange inter-frequency biases in precise point positioning using undifferenced and uncombined observations, GPS Solutions, 22, http://doi.org/10.1007/s10291-017-0685-7


Zhou, F., Dong, D., Li, W., Jiang, X., Wickert, J., Schuh, H.: GAMP: An open-source software of multi-GNSS precise point positioning using undifferenced and uncombined observations, GPS Solutions,  22, http://doi.org/10.1007/s10291-018-0699-9

2017

Alshawaf, F., Balidakis, K., Dick, G., Heise, S., Wickert, J.: Estimating trends in atmospheric water vapor and temperature time series over Germany, Atmospheric Measurement Techniques, Vol. 10, p. 3117-3132, http://doi.org/10.5194/amt-10-3117-2017

Arras, C., Wickert, J.: Estimation of ionospheric sporadic E intensities from GPS radio occultation measurements, Journal of Atmospheric and Solar-Terrestrial Physics, http://doi.org/10.1016/j.jastp.2017.08.006

Gao, Z., Zhang, H., Ge, M., Niu, X., Shen, W., Wickert, J., Schuh, H.: Tightly coupled integration of multi-GNSS PPP and MEMS inertial measurement unit data, GPS Solutions, Vol. 21, Issue: 2, p. 377-391, http://doi.org/10.1007/s10291-016-0527-z

Li, X., Li, X., Yuan, Y., Zhang, K., Zhan, X., Wickert, J.: Multi-GNSS phase delay estimation and PPP ambiguity resolution: GPS, BDS, GLONASS, Galileo, Journal of Geodesy, http://doi.org/10.1007/s00190-017-1081-3

Lu, C., Chen, X., Liu, G., Dick, G., Wickert, J., Jiang, X., Zheng, K., Schuh, H.: Real-Time Tropospheric Delays Retrieved from Multi-GNSS Observations and IGS Real-Time Product Streams,Remote Sensing, Vol. 9, 12, p. 1317, http://doi.org/10.3390/rs9121317

Lu, C., Li, X., Zus, F., Heinkelmann, R., Dick, G., Ge, M., Wickert, J., Schuh, H.: Improving BeiDou real-time precise point positioning with numerical weather models, Journal of Geodesy, 91, 9, p. 1019-1029, http://doi.org/10.1007/s00190-017-1005-2

Schuh, H., Wickert, J., Dick, G., Ge, M., Ramatschi, M., Li, X., Deng, Z., Alshawaf, F., Arras, C., Männel, B.: GNSS research at GFZ for monitoring the Earth system [GNSS-Arbeiten am GFZ zum Monitoring des Systems Erde]. - AVN Allgemeine Vermessungsnachrichten, 124, 6, p. 175-185.

Zhang, X., Wu, M., Liu, W., Li, X., Yu, S., Lu, C., Wickert, J.: Initial assessment of the COMPASS/BeiDou-3: new-generation navigation signals, Journal of Geodesy, 91, 10, p. 1225-1240, http://doi.org/10.1007/s00190-017-1020-3

Zhou, F., Li, X., Li, W., Chen, W., Dong, D., Wickert, J., Schuh, H.: The Impact of Estimating High-Resolution Tropospheric Gradients on Multi-GNSS Precise Positioning, Sensors, 17, 4, p. 756, http://doi.org/10.3390/s17040756

Zhu, Y., Yu, K., Zou, J., Wickert, J.: Sea Ice Detection Based on Differential Delay-Doppler Maps from UK TechDemoSat-1, Sensors, 17, 7, p. 1614, http://doi.org/10.3390/s17071614

Zus, F., Deng, Z., Heise, S., Wickert, J.: Ionospheric mapping functions based on electron density fields, GPS Solutions, 21, 3, p. 873-885, http://doi.org/10.1007/s10291-016-0574-5

Zus, F., Deng, Z., Wickert, J.: The impact of higher-order ionospheric effects on estimated tropospheric parameters in Precise Point Positioning, Radio Science, 52, 8, p. 963-971, http://doi.org/10.1002/2017RS006254

2016

Cardellach, E., Vey, S., Wickert, J.: Foreword to the Special Issue on GNSS Reflectometry, IEEE Journal of selected topics in applied earth observations and remote sensing, Vol. 9, Issue: 10, p. 4519-4524, http://doi.org/10.1109/JSTARS.2016.2607618

Liu, Y., Ge, M. R., Shi, C. Lou, Y. D., Wickert, J., Schuh, H.: Improving integer ambiguity resolution for GLONASS precise orbit determination,  Journal of Geodesy, Vol. 90, Issue: 8, p. 715-726, http://doi.org/10.1007/s00190-016-0904-y

Liu, Y., Ge, M.,Shi, C., Lou, Y., Wickert, J., Schuh, H.: Improving GLONASS Precise Orbit Determination through Data Connection, Sensors Vol. 15, Issue: 12, p. 30104-30114, http://doi.org/10.3390/s151229790

Ning, T., Wang, J., Elgered, G., Dick, G.,  Wickert, J., Bradke, M., Sommer, M.: The uncertainty of the atmospheric integrated water vapour estimated from GNSS observations. - Atmospheric Measurement Techniques, 9, p. 79-92, http://doi.org/10.5194/amt-9-79-2016

Ning, T., Wickert, J., Deng, Z., Heise, S., Dick, G., Vey, S., Schöne, T.: Homogenized time series of the atmospheric water vapor content obtained from the GNSS reprocessed data. - Journal of Climate, 29, 7, p. 2443-2456, http://doi.org/10.1175/JCLI-D-15-0158.1

Ning, T., Wickert, J., Deng, Z., Heise, S., Dick, G., Vey, S., Schöne, T.: Homogenized time series of the atmospheric water vapor content obtained from the GNSS reprocessed data. - Journal of Climate, 29, 7, p. 2443-2456.  http://doi.org/10.1175/JCLI-D-15-0158.1

Saynisch, J., Semmling, M., Wickert, J., Thomas, M.: Potential of space-borne GNSS reflectometry to constrain simulations of the ocean circulation, Ocean Dynamics, Vol. 65, Issue: 11, p. 1441-1460, http://doi.org/10.1007/s10236-015-0886-y

Semmling, M., Leister, V., Saynisch, J., Zus, F., Heise, S., Wickert, J.: A Phase-Altimetric Simulator: Studying the Sensitivity of Earth-Reflected GNSS Signals to Ocean Topography. - IEEE Transactions on Geoscience and Remote Sensing, 54, 11, p. 6791-6802.   http://doi.org/10.1109/TGRS.2016.2591065

Vey, S., Güntner, A., Wickert, J., Blume, T., Ramatschi, M.: Long-term soil moisture dynamics derived from GNSS interferometric reflectometry: a case study for Sutherland, South Africa. - GPS Solutions, 20, 4, p. 641-654. http://doi.org/10.1007/s10291-015-0474-0

Vey, S., Güntner, A., Wickert, J., Blume, T., Thoss, H., Ramatschi, M.: Monitoring Snow Depth by GNSS Reflectometry in Built-up Areas: A Case Study for Wettzell, Germany. - IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 9, 10, p. 4809-4816. http://doi.org/10.1109/JSTARS.2016.2516041

Wickert, J., Cardellach, E., Martin-Neira, M., Bandeiras, J., Bertino, L., Andersen, O. B., Camps, A., Catarino, N., Chapron, B., Fabra, F., et al.: GEROS-ISS: GNSS REflectometry, Radio Occultation, and Scatterometry Onboard the International Space Station, IEEE Journal of selected topics in applied earth observations and remote sensing, Vol. 9, Issue: 10, p. 4552-4581, http://doi.org/10.1109/JSTARS.2016.2614428

2015

Dai, X., Ge, M., Lou, Y., Shi, C., Wickert, J., Schuh, H. (2015): Estimating the yaw-attitude of BDS IGSO and MEO satellites. - Journal of Geodesy, 89, 10, p. 1005-1018, http://doi.org/10.1007/s00190-015-0829-x 

Gao, Z., Zhang, H., Ge, M., Niu, X., Shen, W., Wickert, J., Schuh, H. (2015): Tightly Coupled Integration of Ionosphere-Constrained Precise Point Positioning and Inertial Navigation Systems. - Sensors, 15, p. 5783-5802, http://doi.org/10.3390/s150305783

Li, X., Ge, M., Dai, X., Ren, X., Fritsche, M., Wickert, J., Schuh, H. (2015): Accuracy and reliability of multi-GNSS real-time precise positioning: GPS, GLONASS, BeiDou, and Galileo. - Journal of Geodesy, 89, 6, p. 607-635, http://doi.org/10.1007/s00190-015-0802-8

Li, X., Dick, G., Lu, C., Ge, M., Nilsson, T., Ning, T., Wickert, J., Schuh, H. (2015): Multi-GNSS Meteorology: Real-Time Retrieving of Atmospheric Water Vapor From BeiDou, Galileo, GLONASS, and GPS Observations. - IEEE Transactions on Geoscience and Remote Sensing, 53, 12, p. 6385-6393, http://doi.org/10.1109/TGRS.2015.2438395

Li, X., Zhang, X., Ren, X., Fritsche, M., Wickert, J., Schuh, H. (2015): Precise positioning with current multi-constellation Global Navigation Satellite Systems: GPS, GLONASS, Galileo and BeiDou. - Scientific Reports, 5, http://doi.org/10.1038/srep08328

 Li, X., Zus, F., Lu, C., Ning, T., Dick, G., Ge, M., Wickert, J., Schuh, H. (2015): Retrieving high-resolution tropospheric gradients from multiconstellation GNSS observations. - Geophysical Research Letters, 42, 10, p. 4173-4181, http://doi.org/10.1002/2015GL063856

Li, X., Zus, F., Lu, C., Dick, G., Ning, T., Ge, M., Wickert, J., Schuh, H. (2015): Retrieving of atmospheric parameters from multi-GNSS in real time: Validation with water vapor radiometer and numerical weather model. - Journal of Geophysical Research, 120, 14, p. 7189-7204, http://doi.org/10.1002/2015JD023454

Liu, Y., Ge, M., Shi, C., Lou, Y., Wickert, J., Schuh, H. (2015): Improving GLONASS Precise Orbit Determination through Data Connection. - Sensors, 15, 12, p. 30104-30114, http://doi.org/10.3390/s151229790

Saynisch, J., Semmling, M., Wickert, J., Thomas, M. (2015): Potential of space-borne GNSS reflectometry to constrain simulations of the ocean circulation. - Ocean Dynamics, 65, 11, p. 1441-1460, http://doi.org/10.1007/s10236-015-0886-y

Shangguan, M., Heise, S., Bender, M., Dick, G., Ramatschi, M., Wickert, J. (2015): Validation of GPS atmospheric water vapor with WVR data in satellite tracking mode. - Annales Geophysicae, 33, p. 55-61, http://doi.org/10.5194/angeo-33-55-2015

Soja, B., Nilsson, T., Karbon, M., Zus, F., Dick, G., Deng, Z., Wickert, J., Heinkelmann, R., Schuh, H. (2015): Tropospheric delay determination by Kalman filtering VLBI data. - Earth Planets and Space, 67, http://doi.org/10.1186/s40623-015-0293-0

Zus, F., Dick, G., Heise, S., Wickert, J. (2015): A forward operator and its adjoint for GPS slant total delays. - Radio Science, 50, 5, p. 393-405, http://doi.org/10.1002/2014RS005584

Zus, F., Dick, G., Dousa, J., Wickert, J. (2015): Systematic errors of mapping functions which are based on the VMF1 concept. - GPS Solutions, 19, 2, p. 277-286, http://doi.org/10.1007/s10291-014-0386-4

2014

Chen, Hiang, W., Ge, M., Wickert, J., Schuh, H. (2014): An enhanced strategy for GNSS data processing of massive networks. - Journal of Geodesy, 88, 9, p. 857-867, http://doi.org/10.1007/s00190-014-0727-7

Chen, H., Jiang, W., Ge, M., Wickert, J., Schuh, H. (2014): Efficient High-Rate Satellite Clock Estimation for PPP Ambiguity Resolution Using Carrier-Ranges. - Sensors, 14, 12, p. 22300-22312, http://doi.org/10.3390/s141222300


de la Torre, A., Alexander, P., Llamedo, P., Hierro, R., Nava, B., Radicella, S., Schmidt, T., Wickert, J. (2014): Wave activity at ionospheric heights above the Andes Mountains detected from FORMOSAT-3/COSMIC GPS radio occultation data. - Journal of Geophysical Research, 119, 3, p. 2046-2051, http://doi.org/10.1002/2013JA018870


Li, X., Ge, M., Lu, C., Zhang, Y., Wang, R., Wickert, J., Schuh, H. (2014): High-Rate GPS Seismology Using Real-Time Precise Point Positioning With Ambiguity Resolution. - IEEE Transactions on Geoscience and Remote Sensing, 52, 10, p. 6165-6180, http://doi.org/10.1109/TGRS.2013.2295373


Li, X., Guo, B., Lu, C., Ge, M., Wickert, J., Schuh, H. (2014): Real-time GNSS seismology using a single receiver. - Geophysical Journal International, 198, 1, p. 72-89, https://doi.org/10.1093/gji/ggu113


Li, X., Dick, G., Ge, M., Heise, S., Wickert, J., Bender, M. (2014): Real-time GPS sensing of atmospheric water vapor: precise point positioning with orbit, clock and phase delay corrections. - Geophysical Research Letters, 41, 10, p. 3615-3621, http://doi.org/10.1002/2013GL058721


Li, X., Ge, M., Dousa, J., Wickert, J. (2014): Real-time precise point positioning regional augmentation for large GPS reference networks. - GPS Solutions, 18, 1, p. 61-71, http://doi.org/10.1007/s10291-013-0310-3


Schuh, H., Itzerott, S., Dransch, D., Flechtner, F., Förste, C., Kaufmann, H., Thomas, M., Wickert, J. (2014): Geodäsie und Fernerkundung am Helmholtz-Zentrum Potsdam – Deutsches GeoForschungsZentrum (GFZ). - ZfV: Zeitschrift für Geodäsie, Geoinformation und Landmanagement, 139, 5, p. 302-315, http://doi.org/10.12902/zfv-0040-2014


Semmling, M., Beckheinrich, J., Wickert, J., Beyerle, G., Schön, S., Fabra, F., Pflug, H., He, K., Schwabe, J., Scheinert, M. (2014): Sea surface topography retrieved from GNSS reflectometry phase data of the GEOHALO flight mission. - Geophysical Research Letters, 41, 3, p. 954-960, http://doi.org/10.1002/2013GL058725


Zus, F., Grunwaldt, L., Heise, S., Michalak, G., Schmidt, T., Wickert, J. (2014): Atmosphere sounding by GPS radio occultation: First results from TanDEM-X and comparison with TerraSAR-X. - Advances in Space Research, 53, 2, p. 272-279, http://doi.org/10.1016/j.asr.2013.11.013


Zus, F., Dick, G., Dousa, J., Heise, S., Wickert, J. (2014): The rapid and precise computation of GPS slant total delays and mapping factors utilizing a numerical weather model. - Radio Science, 49, 3, p. 207-216, http://doi.org/10.1002/2013RS005280

2013

Deng, Z., Schön, S., Zhang, H., Bender, M., Wickert, J.: Medium-scale traveling ionospheric disturbances (MSTID) modeling using a dense German GPS network. - Advances in Space Research, 51, 6, 1001-1007, http://doi.org/10.1016/j.asr.2012.07.022

Faber, A., Llamedo, P., Schmidt, T., de la Torre, A., Wickert, J. (2013): On the determination of gravity wave momentum flux from GPS radio occultation data. - Atmospheric Measurement Techniques, 6, 11, 3169-3180, http://doi.org/10.5194/amt-6-3169-2013

He, L., Ge, M., Wang, J., Wickert, J., Schuh, H.: Experimental Study on the Precise Orbit Determination of the BeiDou Navigation Satellite System. - Sensors, 13, 3, 2911-2928, http://doi.org/10.3390/s130302911

Jacobi, C., Arras, C., Wickert, J.: Enhanced sporadic E occurrence rates during the Geminid meteor showers 2006–2010. - Advances in Radio Science, 11, 313-318, http://doi.org/10.5194/ars-11-313-2013

Khodayar, S., Kalthoff, N., Wickert, J., Kottmeier, C., Dorninger, M.: High-resolution representation of the mechanisms responsible for the initiation of isolated thunderstorms over flat and complex terrains: analysis of CSIP and COPS cases. - Meteorology and Atmospheric Physics, 119, 3-4, 109-124, http://doi.org/10.1007/s00703-012-0232-6

Li, X., Ge, M., Zhang, H., Wickert, J.: A method for improving uncalibrated phase delay estimation and ambiguity-fixing in real-time precise point positioning. - Journal of Geology, 87, 5, 405-416, http://doi.org/10.1007/s00190-013-0611-x

Li, X., Ge, M., Zhang, H., Wang, R., Guo, B., Klotz, J., Wickert, J., Schuh, H.: High-Rate coseismic displacements from tightly integrated processing of raw GPS and accelerometer data. - Geophysical Journal International, 195, 1, 612-624, http://doi.org/10.1093/gji/ggt249

Li, X., Ge, M., Zhang, Y., Wang, R., Xu, P., Wickert, J., Schuh, H.: New approach for earthquake/tsunami monitoring using dense GPS networks. - Scientific Reports, 3, 2682, http://doi.org/10.1038/srep02682

Li, X., Ge, M., Zhang, X., Zhang, Y., Guo, B., Wang, R., Klotz, J., Wickert, J.: Real-time high-rate co-seismic displacement from ambiguity-fixed precise point positioning: Application to earthquake early warning. - Geophysical Research Letters, 40, 2, 295-300, http://doi.org/10.1002/grl.50138

Li, X., Ge, M., Guo, B., Wickert, J., Schuh, H.: Temporal point positioning approach for real-time GNSS seismology using a single receiver. - Geophysical Research Letters, 40, 21, 5677-5682, http://doi.org/10.1002/2013GL057818

Li, X., Ge, M., Zhang, H., Nischan, T., Wickert, J.: The GFZ Real-time GNSS Precise Positioning Service System and its Adaption for COMPASS. - Advances in Space Research, 51, 6, 1008-1018, http://doi.org/10.1016/j.asr.2012.06.025

Pavelyev, A., Zhang, K., Liou, Y.-A., Pavelyev, A., Wang, C.-S., Wickert, J., Schmidt, T., Kuleshov, Y.: Principle of locality and analysis of radio occultation data. - IEEE Transactions on Geoscience and Remote Sensing, 51, 6, 3240-3249, http://doi.org/10.1109/TGRS.2012.2225629

Semmling, M., Wickert, J., Schön, S., Stosius, R., Markgraf, M., Gerber, T., Ge, M., Beyerle, G.: A zeppelin experiment to study airborne altimetry using specular Global Navigation Satellite System reflections. - Radio Science, 48, 4, 427-440, http://doi.org/10.1002/rds.20049

Shangguan, M., Bender, M., Ramatschi, M., Dick, G., Wickert, J., Raabe, A., Galas, R. (2013): GPS Tomography: Validation of Reconstructed 3D Humidity fields with Radiosonde Profiles. - Annals of Geophysics, 31, 9, 1491-1505, http://doi.org/10.5194/angeo-31-1491-2013

Sharifi, M. A., Sam Khaniani, A., Masoumi, S., Schmidt, T., Wickert, J.: Least-squares harmonic estimation of the tropopause parameters using GPS radio occultation measurements. - Meteorology and Atmospheric Physics, 120, 1-2, 73-82, http://doi.org/10.1007/s00703-013-0239-7

Sharifi, M. A., Sam-Khaniani, A., Joghataei, M., Schmidt, T., Masoumi, S., Wickert, J.: Tropopause analysis over the Iranian region using GPS radio occultation data. - Advances in Space Research, 52, 9, 1700-1707, http://doi.org/10.1016/j.asr.2013.07.038

Steiner, A. K., Hunt, D., Ho, S.-P., Kirchengast, G., Mannucci, A. J., Scherllin-Pirscher, B., Gleisner, H., v. Engeln, A., Schmidt, T., Ao, C., Leroy, S. S., Kursinski, E. R., Foelsche, U., Gorbunov, M., Heise, S., Kuo, Y.-H., Lauritsen, K. B., Marquardt, C., Rocken, C., Schreiner, W., Sokolovskiy, S., Syndergaard, S., Wickert, J.: Quantification of structural uncertainty in climate data records from GPS radio occultation. - Atmospheric Chemistry and Physics, 13, 3, 1469-1484, http://doi.org/10.5194/acp-13-1469-2013

2012

De la Torre, A., Alexander, P., Hierro, R., Llamedo, P., Rolla, A., Schmidt, T., Wickert, J.: Large amplitude gravity waves above the Southern Andes, the Drake Passage and the Antarctic Peninsula. - Journal of Geophysical Research, 117, D2, 15 PP, http://doi.org/10.1029/2011JD016377

Ge, M., Chen, J., Dousa, J., Gendt, G., Wickert, J.: A computationally efficient approach for estimating high-rate satellite clock corrections in realtime. - GPS Solutions, 16, 1, 9-17, http://doi.org/10.1007/s10291-011-0206-z

Ho, S., Hunt, D., Steiner, A., Mannucci, A. J., Kirchengast, G., Gleisner, H., Heise, S., v. Engeln, A., Marquardt, C., Sokolovskiy, S., Schreiner, W., Ao, C., Wickert, J., Syndergaad, S., Lauritsen, K., Leroy, S., Kursinski, R., Kuo, Y.-H., Scherllin-Pirscher, B., Foelsche, U., Schmidt, T., Gorbunov, M.: Reproducibility of GPS radio occultation data for climate monitoring: Profile-to-profile inter-comparison of CHAMP climate records 2002 to 2008 from six data centers. - Journal of Geophysical Research, 117, D18, http://doi.org/10.1029/2012JD017665

Nafisi, V., Urquhart, L., Santos, M. C., Nievinski, F. G., Böhm, J., Wijaya, D. D., Schuh, H., Ardalan, A. A., Hobiger, T., Ichikawa, R., Zus, F., Wickert, J., Gegout, P.: Comparsion of ray-tracing packages for tropsphere delays. - IEEE Transactions on Geoscience and Remote Sensing, 50, 2, 469-481, http://doi.org/10.1109/TGRS.2011.2160952

Pavelyev, A. G., Liou, Y. A., Zhang, K., Wang, C. S., Wickert, J., Schmidt, T., Gubenko, V. N., Pavelyev, A. A., Kuleshov, Y.: Identification and localization of layers in the ionosphere using the eikonal and amplitude of radio occultation signals. - Atmospheric Measurement Techniques, 5, 1, 1-16, http://doi.org/10.5194/amt-5-1-2012

Semmling, M., Schmidt, T., Wickert, J., Schön, S., Fabra, F., Cardellach, E., Rius, A.: On the Retrieval of the Specular Reflection in GNSS Carrier Observations for Ocean Altimetry. - Radio Science, 47, 6, RS2018, http://doi.org/10.1029/2012RS005007

Yue, X., Schreiner, W. S., Kuo, Y.-H., Hunt, D. C., Wang, W., Solomon, S. C., Burns, A. G., Bilitza, D., Liu, J. Y., Wan, W., Wickert, J.: Global 3-D ionospheric electron density reanalysis based on multisource data assimilation. - Journal of Geophysical Research, 117, A09325, http://doi.org/10.1029/2012JA017968 

Zus, F., Bender, M., Deng, Z., Dick, G., Heise, S., Shangguan, M., Wickert, J.: A methodology to compute GPS slant total delays in a numerical weather model. - Radio Science, 47, 2, RS2018, http://doi.org/10.1029/2011RS004853

2011

Alexander, P., de la Torre, A., Llamedo, P., Hierro, R., Schmidt, T., Faber [Haser], A., Wickert, J.: A method to improve the determination of wave perturbations close to the tropopause by using a digital filter. - Atmospheric Measurement Techniques, 4, 9, 1777-1784, http://doi.org/10.5194/amt-4-1777-2011

Bender, M., Dick, G., Ge, M., Deng, Z., Wickert, J., Kahle, H.-G., Raabe, A., Tetzlaff, G.: Development of a GNSS water vapour tomography system using algebraic reconstruction techniques. - Advances in Space Research, 47, 10, 1704-1720, http://doi.org/10.1016/j.asr.2010.05.034

Bender, M., Stosius, R., Zus, F., Dick, G., Wickert, J., Raabe, A.: GNSS water vapour tomography – Expected improvements by combining GPS, GLONASS and Galileo observations. - Advances in Space Research, 47, 5, 886-897, http://doi.org/10.1016/j.asr.2010.09.011

Beyerle, G., Grunwaldt, L., Heise, S., Köhler, W., König, R., Michalak, G., Rothacher, M., Schmidt, T., Wickert, J., Tapley, B. D., Giesinger, B.: First results from the GPS atmosphere sounding experiment TOR aboard the TerraSAR-X satellite. - Atmospheric Chemistry and Physics, 11, 13, 6687-6699, http://doi.org/10.5194/acp-11-6687-2011

Corsmeier, U., Kalthoff, N., Barthlott, C., Aoshima, F., Behrendt, A., Di Girolamo, P., Dorninger, M., Handwerker, J., Kottmeier, C., Mahlke, H., Mobbs, S. D., Norton, E. G., Wickert, J., Wulfmeyer, V.: Processes driving deep convection over complex terrain: A multi-scale analysis of observations from COPS-IOP 9c. - Quarterly Journal of the Royal Meteorological Society, 137, S1, 137-155, http://doi.org/10.1002/qj.754

Deng, Z., Bender, M., Zus, F., Ge, M., Dick, G., Ramatschi, M., Wickert, J., Löhnert, U., Schön, S.: Validation of tropospheric slant path delays derived from single and dual frequency GPS receivers. - Radio Science, 46, RS6007, http://doi.org/10.1029/2011RS004687

Pavelyev, A. G., Zhang, K., Wang, C. S., Kuleshov, Y., Liou, Y. A., Wickert, J.: Identification of Inclined Ionospheric Layers Using Analysis of GPS Occultation Data. - IEEE Transactions on Geoscience and Remote Sensing, 49, 6, 2374-2384, http://doi.org/10.1109/TGRS.2010.2091138

Semmling, A. M., Beyerle, G., Stosius, R., Dick, G., Wickert, J., Fabra, F., Cardellach, E., Ribó, S., Rius, A., Helm, A., Yudanov, S. B., d'Addio, S.: Detection of Arctic Ocean tides using interferometric GNSS-R signals. - Geophysical Research Letters, 38, L04103, http://doi.org/10.1029/2010GL046005

Stosius, R., Beyerle, G., Höchner, A., Wickert, J., Lauterjung, J.: The impact on tsunami detection from space using GNSS-reflectometry when combining GPS with GLONASS and Galileo on GNSS-Reflectometry tsunami detection from space. - Advances in Space Research, 47, 5, 843-853, http://doi.org/10.1016/j.asr.2010.09.022

Zus, F., Wickert, J., Bauer, H. S., Schwitalla, T., Wulfmeyer, V.: Experiments of GPS slant path data assimilation with an advanced MM5 4DVAR system. - Meteorologische Zeitschrift, 20, 2, 173-184, http://doi.org/10.1127/0941-2948/2011/0232

Zus, F., Beyerle, G., Heise, S., Schmidt, T., Wickert, J., Marquardt, C.: Validation of refractivity profiles derived from GRAS raw-sampling data. - Atmospheric Measurement Techniques, 4, 7, 1541-1550, http://doi.org/10.5194/amt-4-1541-2011

2010

Alexander, P., Luna, D., de la Torre, A., Llamedo, P., Schmidt, T., Wickert, J.: A comparative and numerical study of effects of gravity waves in small miss-distance and miss-time GPS radio occultation temperature profiles. - Advances in Space Research, 45, 10, 1231-1234, http://doi.org/10.1016/j.asr.2009.12.015

De la Torre, A., Llamedo, P., Alexander, P., Schmidt, T., Wickert, J.: Estimated Errors in a Global Gravity Wave Climatology from GPS Radio Occultation Temperature Profiles. - Advances in Space Research, 46, 2, 174-179, http://doi.org/10.1016/j.asr.2010.02.033

Khandu, J., Awange, L., Wickert, J., Schmidt, T., Sharifi, M. A., Heck, B., Fleming, K.: GNSS remote sensing of the Australian tropopause. - Climatic Change, 105, 3-4, 597-618, http://doi.org/10.1007/s10584-010-9894-6

Khodayar, S., Kalthoff, N., Wickert, J., Corsmeier, U., Morcrette, C., Kottmeier, C.: The increase of spatial data resolution for the detection of the initiation of convection. A case study from CSIP. - Meteorologische Zeitschrift, 19, 2, 179-198, http://doi.org/10.1127/0941-2948/2010/0439

Pavelyev, A. G., Liou, Y. A., Wickert, J., Zhang, K., Wang, C. S., Kuleshov, Y.: Analytical model of electromagnetic waves propagation and location of inclined plasma layers using occultation data. - Progress in Electromagnetics Research (PIER), 106, 177-202, http://doi.org/10.2528/PIER10042707

Pavelyev, A. G., Liou, Y. A., Wickert, J., Schmidt, T., Pavelyev, A. A.: Phase acceleration: a new important parameter in GPS occultation technology. - GPS Solutions, 14, 1, 3-11, http://doi.org/10.1007/s10291-009-0128-1

Schmidt, T., Cammas, J.-P., Smit, H. G. J., Heise, S., Wickert, J., Faber [Haser], A.: Observational characteristics of the tropopause inversion layer derived from CHAMP/GRACE radio occultations and MOZAIC aircraft data. - Journal of Geophysical Research, 115, D24304, http://doi.org/10.1029/2010JD014284

Schmidt, T., Wickert, J., Faber [Haser], A.: Variability of the upper troposphere and lower stratosphere observed with GPS radio occultation bending angles and temperatures. - Advances in Space Research, 46, 2, 150-161, http://doi.org/10.1016/j.asr.2010.01.021

Stosius, R., Beyerle, G., Helm, A., Höchner, A., Wickert, J.: Simulation of space-borne tsunami detection using GNSS-Reflectometry applied to tsunamis in the Indian Ocean. - Natural Hazards and Earth System Sciences (NHESS), 10, 6, 1359-1372, http://doi.org/10.5194/nhess-10-1359-2010

Yakovlev, O. I., Wickert, J., Pavelyev, A. G., Cherkunova, G. P., Anufriev, V. A.: Results of radio occultation measurement of polar ionosphere at satellite-to-satellite paths during strong flare solar activity. - Acta Astronautica, 67, 3-4, 315-323, http://doi.org/10.1016/j.actaastro.2010.02.017

2009

Arras, C., Jacobi, C., Wickert, J.: Semidiurnal tidal signature in sporadic E occurrence rates derived from GPS radio occultation measurements at higher midlatitudes. - Annales Geophysicae, 27, 6, 2555-2563, http://doi.org/10.5194/angeo-27-2555-2009

Bender, M., Dick, G., Wickert, J., Ramatschi, M., Ge, M., Gendt, G., Rothacher, M., Raabe, A., Tetzlaff, G.: Estimates of the information provided by GPS slant data observed in Germany regarding tomographic applications. - Journal of Geophysical Research, 114, D06303, http://doi.org/10.1029/2008JD011008

Beyerle, G., Ramatschi, M., Galas, R., Schmidt, T., Wickert, J., Rothacher, M.: A data archive of GPS navigation messages. - GPS Solutions, 13, 1, 35-41, http://doi.org/10.1007/s10291-008-0095-y

Deng, Z., Bender, M., Dick, G., Ge, M., Wickert, J., Ramatschi, M., Zou, X.: Retrieving tropospheric delays from GPS networks densified with single frequency receivers. - Geophysical Research Letters, 36, L19802, http://doi.org/10.1029/2009GL040018

Foelsche, U., Pirscher, B., Borsche, M., Kirchengast, G., Wickert, J.: Assessing the climate monitoring utility of radio occultation data: From CHAMP to FORMOSAT-3/COSMIC. - Terrestrial Atmospheric and Oceanic Sciences, 20, 1, 155-170, http://doi.org/10.3319/TAO.2008.01.14.01(F3C)

Heise, S., Dick, G., Gendt, G., Schmidt, T., Wickert, J.: Integrated water vapor from IGS ground-based GPS observations: Initial results from a global 5-minute data set. - Annales Geophysicae, 27, 7, 2851-2859., http://doi.org/10.5194/angeo-27-2851-2009

Ho, S.-P., Kirchengast, G., Leroy, S., Wickert, J., Mannucci, A. J., Stiner, A. K., Hunt, D., Schreiner, W., Sokolovskiy, S., Ao, C. O., Borsche, M., von Engeln, A., Foelsche, U., Heise, S., Iijima, B., Kuo, Y.-H., Kursinski, R., Pirscher, B., Ringer, M., Rocken, C., Schmidt, T.: Estimating the Uncertainty of using GPS Radio Occultation Data for Climate Monitoring: Inter-comparison of CHAMP Refractivity Climate Records 2002-2006 from Different Data Centers. - Journal of Geophysical Research, 114, D23107, http://doi.org/10.1029/2009JD011969

Huang, C. Y., Cheng, C. Z., Lin, P. H., Fong, C. J., Wickert, J., Hsiao, C. C.: Radio occultation retrieval of atmospheric profiles from the FORMOSAT-3/COSMIC mission: early results. - Terrestrial Atmospheric and Oceanic Sciences, 20, 1, 21-34, http://doi.org/10.3319/TAO.2008.04.24.01(F3C)

Llamedo, P., de la Torre, A., Alexander, P., Luna, D., Schmidt, T., Wickert, J.: A gravity wave analysis near to the Andes Range from GPS radio occultation data and mesoscale numerical simulations: Two case studies. - Advances in Space Research, 44, 4, 494-500, http://doi.org/10.1016/j.asr.2009.04.023

Pavelyev, A., Liou, Y. A., Wickert, J., Gavrik, A. L., Lee, C. C.: Eikonal acceleration technique for studying of the Earth and planetaryatmospheres by radio occultation method. - Geophysical Research Letters, 36, L21807, http://doi.org/10.1029/2009GL040979

Wickert, J., Michalak, G., Schmidt, T., Beyerle, G., Cheng, C. Z., Healy, S. B., Heise, S., Huang, C. Y., Jakowski, N., Köhler, W., Mayer, C., Offiler, D., Ozawa, E., Pavelyev, A. G., Rothacher, M., Tapley, B., Arras, C.: GPS radio occultation: results from CHAMP, GRACE and FORMOSAT-3/COSMIC. - Terrestrial Atmospheric and Oceanic Sciences, 20, 1, 35-50, http://doi.org/10.3319/TAO.2007.12.26.01(F3C)

Yakovlev, O. I., Wickert, J., Pavelyev, A. G., Matyugova, S. S., Anufrieva, V. A.: Sporadic structures in equatorial ionosphere as revealed from GPS occultation data. - Acta Astronautica, 63, 11-12, 1350-1359, http://doi.org/10.1016/j.actaastro.2008.05.023

2008

Arras, C., Wickert, J., Beyerle, G.: A global climatology of ionospheric irregularities derived from GPS radio occultation - Geophysical Research Letters, 35, 14, http://doi.org/10.1029/2008GL034158

Schmidt, T., Wickert, J., Heise, S.: Comparison of ECMWF analyses with GPS radio occultations from CHAMP -  Annales Geophysicae, 26, 11, 3225-3234, http://doi.org/10.5194/angeo-26-3225-2008

Heise, S., Wickert, J.; Beyerle, G.: Comparison of Water Vapor and Temperature Results From GPS Radio Occultation Aboard CHAMP With MOZAIC Aircraft Measurements - IEEE Transactions on Geoscience and Remote Sensing, 46, 11, 3406-3411, http://doi.org/10.1109/TGRS.2008.920268

Schmidt, T., de la Torre, A., Wickert, J.: Global gravity wave activity in the tropopause region from CHAMP radio occultation data - Geophysical Research Letters, 35, 16,  http://doi.org/10.1029/2008GL034986

Schmidt, T., Wickert, J., Beyerle, G.: Global tropopause height trends estimated from GPS radio occultation data - IEEE Transactions on Geoscience and Remote Sensing, 35, 11, http://doi.org/10.1029/2008GL034012

Pavelyev, A. G., Wickert, J., Liou, Y.: Localization of plasma layers in the ionosphere based on observing variations in the phase  and amplitude of radiowaves along the satellite-to-satellite path - Radiophysics and Quantum Electronics, 51, 1, 1-8, http://doi.org/10.1007/s11141-008-9002-1

Pavelyev, A. G., Liou, Y., Wickert, J.: Location of layered structures in the ionosphere and atmosphere by use of GPS occultation data - Advances in Space Research, 42, 1, 224-228, http://doi.org/10.1016/j.asr.2008.02.006

Foelsche, U., Borsche, M., Steiner, A. K.: Observing upper troposphere-lower stratosphere climate with radio occultation data from the CHAMP satellite - Climate Dynamics, 31, 1, 49-65, http://doi.org/10.1007/s00382-007-0337-7

Yakovlev, O. I., Anufriev, V. A., Wickert, J.: Potentialities of radio-occultation monitoring of the lower ionosphere on satellite-to-satellite paths - Journal of Communications Technology and Electronics, 53, 2, 155-162, http://doi.org/10.1134/S1064226908020046

Yakovlev, O. I., Wickert, J., Pavelyev, A. G.: Sporadic structures in equatorial ionosphere as revealed from GPS occultation data - Acta Astronautica, 63, 11-12, 1350-1359, http://doi.org/10.1016/j.actaastro.2008.05.023

Wrasse, C. M., Fechine, J., Takahashi, H.: Temperature comparison between CHAMP radio occultation and TIMED/SABER measurements in the lower stratosphere - Advances in Space Research, 41, 9, 1422-1427, http://doi.org/10.1016/j.asr.2007.06.073

Awange, J. L., Sharifi, M. A., Ogonda, G.: The falling Lake Victoria water level: GRACE, TRIMM and CHAMP satellite analysis of the lake basin - Water Resources Management, 22, 7, 775-796, http://doi.org/10.1007/s11269-007-9191-y

Bender, M., Dick, G., Wickert, J.: Validation of GPS slant delays using water vapour radiometers and weather models - Meteorologische Zeitschrift, 17, 6, 807-812, http://doi.org/10.1127/0941-2948/2008/0341

2007

Nedoluha, G. E., Alfred, J., Benson, C. M.: A comparison of radiosonde and GPS radio occultation measurements with meteorological temperature analyses in the Antarctic vortex, 1998-2004 - Journal of Geophysical Research-Atmospheres, 12, D16, http://doi.org/10.1029/2007Jd008928

Healy, S. B., Wickert, J., Michalak, G.: Combined forecast impact of GRACE-A and CHAMP GPS radio occultation bending angle profiles - Atmospheric Science Letters, 8, 2, 43-50, http://doi.org/10.1002/asl.149

von Engeln, A., Teixeira, J., Wickert, J.: "Monitoring the atmospheric boundary layer by GPS radio occultation signals recorded in the open-loop mode" by S. Sokolovskiy et al. - Geophysical Research Letters, 34, 2,  http://doi.org/10.1029/2006GL027675

Pavelyev, A. G., Liou, Y. A., Wickert, J.: Effects of the ionosphere and solar activity on radio occultation signals: Application to CHAllenging Minisatellite Payload satellite observations - Journal of Geophysical Research-Space Physics, 112, A6,  http://doi.org/10.1029/2006JA011625

Alfred, J., Fromm, M., Bevilacqua, R.: Observations and analysis of polar stratospheric clouds detected by POAM III and SAGE III during the SOLVE II/VINTERSOL campaign in the 2002/2003 Northern Hemisphere winter - Atmospheric Chemistry and Physics-Space Physics, 7, 9, 2151-2163, http://doi.org/10.5194/acp-7-2151-2007

Froehlich, K., Schmidt, T., Ern, M.: The global distribution of gravity wave energy in the lower stratosphere derived from GPS data and gravity wave modelling: Attempt and challenges - Journal of Atmospheric and Solar-Terrestrial Physics, 69, 17-18, 2238-2248, http://doi.org/10.1016/j.jastp.2007.07.005

2006

Wu, X.C., Hu, X., Zhang, X.X.: A calibrated TEC method for inversion of ionospheric GPS occultation data - Chinese Journal of Geophysics-Chinese Edition, 49, 2, 328-334, http://doi.org/10.1002/cjg2.836

Schmidt, T, Beyerle, G, Heise, S: A climatology of multiple tropopauses derived from GPS radio occultations with CHAMP and SAC-C - Geophysical Research Letters, 33, 4, http://doi.org/10.1029/2005GL024600

de la Torre, A., Schmidt, T., Wickert, J.: A global analysis of wave potential energy in the lower stratosphere derived from 5 years of GPS radio occultation data with CHAMP - Geophysical Research Letters, 33, 24, http://doi.org/10.1029/2006GL027696

Liou, Y.A., Pavelyev, A.G., Wickert, J.: Application of GPS radio occultation method for observation of the internal waves in the atmosphere - Journal of Geophysical Research-Atmospheres, 111, D6, http://doi.org/10.1029/2005JD005823

Heise, S., Wickert, J., Beyerle, G.: Global monitoring of tropospheric water vapor with GPS radio occultation aboard CHAMP - Atmospheric Remote Sensing: Earth's Surface, Troposphere, Stratosphere and Mesosphere - I, 37, 12, 2222-2227, http://doi.org/10.1016/j.asr.2005.06.066

de la Torre, A., Alexander, P., Llamedo, P.: Gravity waves above the Andes detected from GPS radio occultation temperature profiles: Jet mechanism - Geophysical Research Letters, 33, 24, http://doi.org/10.1029/2006GL027343

Beyerle, G., Schmidt, T., Wickert, J.: Observations and simulations of receiver-induced refractivity biases in GPS radio occultation - Journal of Geophysical Research-Atmospheres, 111, D12, http://doi.org/10.1029/2005JD006673

2005

Liou, Y.A., Pavelyev, A.G., Wickert, J.: Analysis of atmospheric and ionospheric structures using the GPS/MET and CHAMP radio occultation database: a methodological review - Gps Solutions, 9, 2, 122-143, http://doi.org/10.1007/s10291-005-0141-y

Gobiet, A., Foelsche, U., Steiner, A.K.: Climatological validation of stratospheric temperatures in ECMWF operational analyses with CHAMP radio occultation data - Geophysical Research Letters, 32, 12, http://doi.org/10.1029/2005GL022617

Pavelyev, A.G., Wickert, J., Liou, Y.A.: Different mechanisms of the ionospheric influence on GPS occultation signals - Gps Solutions, 9, 2, 96-104, http://doi.org/10.1007/s10291-005-0138-6

Pavelyev, A.G., Wickert, J., Schmidt, T.: Effect of solar activity in late October 2003 on radio occultation signals from the CHAMP German satellite - Geomagnetism and Aeronomy, 45, 1, 134-139, http://doi.org/10.1029/2006JA011625

Wickert, J., Beyerle, G., Konig, R.: GPS radio occultation with CHAMP and GRACE: A first look at a new and promising satellite configuration for global atmospheric sounding - Annales Geophysicae, 23, 3, 653-658, http://doi.org/10.5194/angeo-23-653-2005

Schmidt, T., Heise, S., Wickert, J.: GPS radio occultation with CHAMP and SAC-C: global monitoring of thermal tropopause parameters - Atmospheric Chemistry and Physics, 5, 1473-1488, http://doi.org/10.5194/acp-5-1473-2005

Beyerle, G., Schmidt, T., Michalak, G.: GPS radio occultation with GRACE: Atmospheric profiling utilizing the zero difference technique - Geophysical Research Letters, 32, 13, http://doi.org/10.1029/2005GL023109

Liou, Y.A., Pavelyev, A.G., Wickert, J.: Observation of the gravity waves from GPS/MET radio occultation data - Journal of Atmospheric and Solar - Terrestrial Physics, 67, 13, 219-228, http://doi.org/10.1016/j.jastp.2004.08.001

von Engeln, A., Teixeira, J., Wickert, J.: Using CHAMP radio occultation data to determine the top altitude of the Planetary Boundary Layer - Geophysical Research Letters, 32, 6, http://doi.org/10.1029/2004GL022168

Wang, D.Y., von Clarmann, T., Fischer, H.: Validation of stratospheric temperatures measured by michelson interferometer for passive atmospheric sounding (MIPAS) on envisat - Journal of Geophysical Research-Atmospheres, 110, D8, http://doi.org/10.1029/2004JD00534

2004

de la Torre, A., Tsuda, T., Hajj, G.A.: A global distribution of the stratospheric gravity wave activity from GPS occultation profiles with SAC-C and CHAMP - Journal of the Meteorological Society of Japan, 82, 1B, 407-417, http://doi.org/10.2151/jmsj.2004.407

Wickert, J., Pavelyev, A.G., Liou, Y.A.: Amplitude variations in GPS signals as a possible indicator of ionospheric structures - Geophysical Research Letters, 31, 24, http://doi.org/10.1029/2004GL020607

Awange, J.L., Fukuda, Y., Takemoto, S.: Analytic solution of GPS atmospheric sounding refraction angles - Earth Planets and Space, 56, 6, 573-587, http://doi.org/10.1186/BF03352518

Beyerle, G., Wickert, J., Schmidt, T.: Atmospheric sounding by global navigation satellite system radio occultation: An analysis of the negative refractivity bias using CHAMP observations - Journal of Geophysical Research-Atmospheres, 109, D1, http://doi.org/10.1029/2003JD003922

Wickert, J., Galas, R., Schmidt, T.: Atmospheric sounding with CHAMP: GPS ground station data for occultation processing - Physics and Chemistry of the Earth, 29, 2-3, 267-275, http://doi.org/10.1016/j.pce.2004.01.015

Wang, D.Y., Stiller, G.P., von Clarmann, T.: Cross-validation of MIPAS/ENVISAT and GPS-RO/CHAMP temperature profiles - Journal of Geophysical Research-Atmospheres, 109, D19, http://doi.org/10.1029/2004JD004963

Pavelyev, A.G., Liou, Y.A., Wickert, J.: Diffractive vector and scalar integrals for bistatic radio holographic remote sensing - Journal of Geophysical Research-Atmospheres, 39, 4, http://doi.org/10.1029/2003RS002935

Tsai, H.F., Tsuda, T., Hajj, G.A.: Equatorial Kelvin waves observed with GPS occultation measurements (CHAMP and SAC-C) - Journal of Geophysical Research-Atmospheres, 82, 1B, 397-406, http://doi.org/10.2151/jmsj.2004.397

Schmidt, T., Wickert, J., Marquardt, C.: GPS radio occultation with CHAMP: an innovative remote sensing method of the atmosphere - Climate Change Processes in the Stratosphere, Earth-Atmosphere-Ocean Systems, and Oceanographic Processes From Satellite Data, 33, 7, 1036-1040, doi.org/10.1016/S0273-1177(03)00591-X

Wickert, J., Yakovlev, O.I., Pavelev, A.G.: Ionospheric fluctuations of decimetric radio waves along satellite-to-satellite paths - Journal of Communications Technology and Electronics, 49, 10, 1109-1116, http://doi.org/10.1029/2006JA011625

Liou, Y.A., Pavelyev, A.G., Wickert, J.: Response of GPS occultation signals to atmospheric gravity waves and retrieval of gravity wave parameters - Gps Solutions, 8, 2, 103-111, http://doi.org/10.1007/s10291-004-0090-x

Wickert, J., Schmidt, T., Beyerle, G.: The radio occultation experiment aboard CHAMP: Operational data analysis and validation of vertical atmospheric profiles - Journal of the Meteorological Society of Japan, 82, 1B, 381-395, http://doi.org/10.2151/jmsj.2004.381

Wickert, J., Schmidt, T., Beyerle, G.: Tropical tropopause parameters derived from GPS radio occultation measurements with CHAMP - Journal of Geophysical Research-Atmospheres, 109, D13, http://doi.org/10.1029/2004JD004566

2002

Igarashi, K., Pavelyev, A., Wickert, J.: Application of radio holographic method for observation of altitude variations of the electron density in the mesosphere/lower thermosphere using GPS/MET radio occultation data - Journal of Atmospheric and Solar-Terrestrial Physics, 64, 8-11, 959-969, http://doi.org/10.1016/S1364-6826(02)00050-0

Pavelyev, A., Igarashi, K., Reigber, C.: First application of the radioholographic method to wave observations in the upper atmosphere - Radio Science, 37, 3, http://doi.org/10.1029/2000RS002501

Wickert, J., Beyerle, G., Hajj, G.A.: GPS radio occultation with CHAMP: Atmospheric profiling utilizing the space-based single difference technique - Geophysical Research Letters, 29, 8, http://doi.org/10.1029/2001GL013982

Beyerle, G., Hocke, K., Wickert, J.: GPS radio occultations with CHAMP: A radio holographic analysis of GPS signal propagation in the troposphere and surface reflections - Journal of Geophysical Research-Atmospheres, 107, D24, http://doi.org/10.1029/2001JD001402

2001

Wehrenpfennig, A., Jakowski, N., Wickert, J.: A dynamically configurable system for operational processing of space weather data - Physics and Chemistry of the Earth Part C-Solar-Terrestial and Planetary Science, 26, 8, 601-604, http://doi.org/10.1016/S1464-1917(01)00054-X

Marquardt, C., Labitzke, K., Reigber, C.: An assessment of the quality of GPS/MET radio limb soundings during February 1997 - Physics and Chemistry of the Earth Part a-Solid Earth and Geodesy, 26, 3, 125-130, http://doi.org/10.1016/S1464-1895(01)00035-7

Wickert, J., Reigber, C., Beyerle, G.: Atmosphere sounding by GPS radio occultation: First results from CHAMP - Geophysical Research Letters, 28, 17, 3263-3266, http://doi.org/10.1029/2001GL013117

Hocke, K., Igarashi, K., Nakamura, M.: Global sounding of sporadic E layers by the GPS/MET radio occultation experiment - Journal of Atmospheric and Solar-Terrestrial Physics, 63, 18, 1973-1980, http://doi.org/10.1016/S1364-6826(01)00063-3

Wickert, J., Galas, R., Beyerle, G.: GPS ground station data for CHAMP radio occultation measurements - Physics and Chemistry of the Earth Part a-Solid Earth and Geodesy, 26, 6-8, 503-511, http://doi.org/10.1016/S1464-1895(01)00092-8

Galas, R., Wickert, J., Burghardt, W.: High rate low latency GPS ground tracking network for CHAMP - Physics and Chemistry of the Earth Part a-Solid Earth and Geodesy, 26, 6-8, 649-652, http://doi.org/10.1016/S1464-1895(01)00115-6

Igarashi, K., Pavelyev, A., Hocke, K.: Observation of wave structures in the upper atmosphere by means of radio holographic analysis of the radio occultation data - Advances in Remote Sensing of the Middle and Upper Atmosphere and the Ionosphere, 27, 6-7, 1321-1326, http://doi.org/10.1016/S0273-1177(01)00144-2

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