Novel GNSS receiver test bench based on scenario database and signal playback technology

GNSS receiver testing technology plays a significant role in navigation algorithm research, receiver development and product selection. However, the distorted reflection of real environment and the non-repeatability respectively makes the mainstream satellite signal simulator and road drive test insatiable to receiver testing in specific application. In this paper, we propose a novel GNSS receiver test bench which based on real satellite signal record and playback technology. The scenario database is constructed to preserve recorded signal from real scenarios and provide rich cases for the test bench. The playback device is developed to enable high-fidelity signal playback and the front-end is developed to implement automatic testing. Experimental results show that the designed test bench is reasonable and effective to test receivers' performance in different scenarios, as well as identify their strengths and drawbacks.