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The Research on single satellite positioning System of Aircraft Based on Communication Signals of Beijing Inmarsat Ground Earth Station

The Research on Single satellite Positioning System of Aircr...

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第九届中国卫星导航学术年会

作者： Yuanliang Liu Hongxia Kang China Transport Telecommunication & Information Center

The traditional satellite navigation and positioning technology uses a number of satellites to locate, for example, GPS and BDS use four satellites to locate. However, in some special cases, when GPS or BDS positioning device is invalid, it becomes very urgent to realize the positioning. In order to solve this problem,a single satellite positioning method and system based on the communication signals of the International Maritime satellite(Inmarsat)Ground Earth Station(GES)is proposed in this paper. The standard rectangular space coordinate system is established with the center of the geocentric as the starting point, the flight path model of the aircraft is constructed, and all the possible flight paths of the aircraft are found by using the method of iterative analysis. Method to find out all the possible trajectories of the aircraft and visualize them by using the relevant data such as the Burst Timing Offset(BTO) provided by the GES to simulate, and determine the possible location of aircraft. Finally, the cubic spline interpolation is used to estimate the velocity components of the aircraft, combined with the Burst Frequency Offset(BFO) data formula to estimate the BFO value of each route, and compared with the standard BFO value to calculate the probability of each possible flight route,simulate the possible flight path. Taking the Beijing GES and the Asia-Pacific satellite as an example, this paper analyzes. The research results of this paper will help to shorten the positioning time of the aircraft crash, find the aircraft as soon as possible.

关键词： Inmarsat GES Communication Signals Aircraft BTO BFO single satellite positioning

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