一种空间时差定位的新算法

针对三星时差测量定位系统,基于高精度的EGS-84地球模型,提出了一种解析算法。将此解析算法与传统的迭代算法进行性能比较,对解析算法进行修正形成了综合算法。对定位算法的性能包括定位误差、运算效率和数值稳定性等方面进行了理论分析,并通过仿真结果对理论分析的结论进行了验证。理论分析和仿真结果表明,综合算法能够高精度、高效率进行定位,同时还具有较强的数值稳定性。

A New Algorithm for the Time Difference Location in Aerospace

A closed-form TDOA passive location algorithm using the WGS-84 ellipsoid model is presented. The closed-form algorithm is compared to the classic iterative algorithm and modified to an integrative algorithm. Properties of the algorithm including location accuracy, computation efficiency and numerical stability are addressed. Simulation results are included to corroborate the theoretical development. The theoretical and simulation results show that the integrative location algorithm can achieve not only high efficiency and high precision, but also a good numerical stability.