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Geodetic Applications with Low-cost GNSS Receiver

Introduction [1]


The basic concept of the experiment is to define the trajectory of a UAV using a low-cost GNSS receiver. In this UAV is installed a camera, a laser altimeter and one single-frequency GNSS receiver. In the future it will be used for remote sensing applications, but due to this fact, the position of the UAV must be defined very well every moment. This experiment is done in order to find the limits of the accuracy that can be achieved using a single-frequency receiver for different baselines between the rover (the UAV) and the base station. mehr zu: Introduction [2]

U-Blox Evaluation Kit [3]


For the experimental purposes was used the U-Blox M8N evaluation kit. This kit can be directly connected with a PDA or a laptop. U-Blox M8N EVK is compact and user friendly, thus it is appropriate for users with no experience. mehr zu: U-Blox Evaluation Kit [4]



The software that was used for the data processing was RTKLIB. RTKLIB is an open source software suite for GNSS applications and consists of the many programs. mehr zu: RTKLIB [6]

Cycling Test [7]


his test was performed in order to check the behaviour of the receiver in dynamic mode. For this reason the receiver was installed on a bike, while the bike was cycling measurements were taken. The kinematic solution of the position was calculated in post processing mode. The measurements were taken on 29.10.2016 and there were applied three different methods to estimate the position of the receiver, the first was the absolute positioning, the second was the relative positioning using as base station in GFZ Potsdam and a virtual reference station (VRS) and the third was PPP. mehr zu: Cycling Test [8]

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