Accuracy Analysis And Experiment Simulation Design Based On Beidou Navigation Satellite System

It is an important part of the future air navigation systems to receive anti-collision identification information through automatic dependent surveillance system and to use the vintage route to reduce flight fuel consumption and time. The accuracy of the satellite navigation system will be better than conventional ground-based navigation system. It can be more safe and effective to realize the air traffic control of the flight if we use the satellite navigation system. The rapid development of Beidou Navigation Satellite System(BDS) bring us opportunities in the field of civil aviation applications. It is valuable to study the interaction between satellite navigation and aircraft flying and to analyze the high-precision positioning theory of the BDS. This paper study the aircraft flight path and build the simulation experiment platform of the BDS. The platform can simulate the process of the flight and calculate the position and velocity of the aircraft.Firstly, this paper studied the development of the BDS and summarized Satellite-based navigation applications in civil aviation. The existing methods of data quality assessment as well as the characteristic of satellite navigation data were also studied.Then the position method of BDS,the coordinate system and the time reference system were researched. This paper analyze the caused error of the receiver from each aspect and also discussed the error correction model.Afterwards, the experiment platform was built by using a satellite navigation signal simulation and the CC50-BG satellite navigation module. The function structures of the hardware and software part, working principle and implementation plan are illustrated in this paper.Finally, this paper analyzes the flight of the Cessna-172from Guanghan to Suining and simulated the flight trajectory signal through the BDS experiment platform. The NMEA statement were received and the position data can be extracted to analyze the navigation accuracy. This method can save manpower and equipment directly into the measurement process and the time cost. This method can actually be applied to test the accuracy of the receiver installed on the aircraft.