Research on Performance Evaluation of Receiver Combining Measurements from RDSS and RNSS for Position Fixing and Report

In recent years, navigation signal simulator with different functions has been playing a very important role in meeting the performance requirement of the research, test and evaluation of the different navigation receiver, such as RDSS, RNSS and dual-mode receivers. Compared with the simulator of GPS, BeiDou Navigation Satellite System (BDS) have some different unique characteristics, especially in RDSS determination. First, the principle of comprehensive RDSS position and report is elaborated and then requirements of the dynamic navigation signal simulation are analyzed. Finally, two key mathematical models are established to simulate the signals arriving at the receiver antenna for dual-mode receiver test, which are: the transmitting time iterative model and satellite orbit approximation model. The results show that the BDS dual-mode simulator can satisfy dual-mode receiver’s test requirements.