Robust positioning method based on correlation between satellites
In complex observation environment,satellite signals are prone to occlusion and interference,observation data are frequently abnormal and have strong correlation,and fault detection and excluded methods are prone to misidentify fault location,which leads to a significant decline in positioning performance.To solve this problem,a robust positioning method considering correlation between satellites is proposed.The faults are detected and identified by chi-square global test and w local test,respectively.When the correlation between satellites is weak,the identified faults are excluded and the position solution is completed.When the correlation between satellites is strong,the robust method is used to solve the results.The experimental results show that the strong correlation between satellites leads to a higher misdetection of the fault location,the traditional fault detection and excluded(FDE)method causes positioning result in great deviation,the robust positioning method based on correlation between satellites effectively reduces the influence of abnormal observations with the strong correlation in the complex environment and significantly improve positioning accuracy.
satellite navigationrobust positioningcorrelationfault detection and excludedtests
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