【摘 要】
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Autonomous navigation technology of navigation satellite is the key technology of new generation Beidou navigation system.There are a lot of researches on the autonomous navigation algorithm at home a
【机 构】
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Student Department, Shanghai Institute of Microsystem and Information Technology, SIMIT, Shanghai, C
论文部分内容阅读
Autonomous navigation technology of navigation satellite is the key technology of new generation Beidou navigation system.There are a lot of researches on the autonomous navigation algorithm at home and abroad.But because of the limit of condition,the previous research work is based on the ground simulation data,which includes reference orbit,reference clock error,inter-satellite pseudo range.The reference orbit data and reference clock error data generally is based on the GPS satellites,which cannot truly represent the characteristics of the orbit and the clock of Beidou satellite.In addition,all kinds of errors those are added to the two-way pseudo range are calculated based on the known error models,which cannot simulate the real space environment.First,this paper gives the accuracy of autonomous orbit determination which is calculated by on-board algorithm.Then the error of the autonomous navigation algorithm is analyzed accurately based on on-board observation data and precise ephemeris.At last,using the high accuracy error of system,run the autonomous navigation algo-rithm at ground and get more precise accuracy of autonomous orbit determination.
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