USING UAVS AS GNSS SATELLITES

摘要

This research paper presents an update of the authors' real-time real-world testbed for new GNSS signals. It includes experience gained in setting up an airborne pseudolite, UAVlite, to analyze the code- and phase-ranging performance and to test navigation message authentication schemes. UAVlites transmit GNSS like signals free from any local transmitter multipath, in contrast to ground-based transmitters. A software-defined radio allows easy broadcast of new navigation signals, which can be tested in real environments.