基于观测站精确距离信息的多站时差定位方法

doi:10.12305/j.issn.1001-506X.2024.08.07

Abstract

Abstract:

For aerial maneuvering platforms, the presence of observation stations position errors makes the positioning accuracy of traditional time difference positioning methods unable to meet the high-precision positioning requirements. In view of the problem of multi-station time difference positioning with observation stations position errors, a high-precision time difference positioning method based on precise distance information of observation stations is proposed. Unlike the traditional two step weighted least squares (TS-WLS) algorithm, the proposed algorithm directly estimates the error of target position estimation in weighted least squares step, avoiding nonlinear operations such as square and square root. Simulation experiment results show that introducing precise distance information from observation stations can significantly improve the accuracy of target positioning and the proposed algorithm has strong noise adaptability and can achieve high-precision time difference positioning in the case of large observation station position errors.

Key words: time difference of arrival (TDOA), two step weighted least squares (TS-WLS), Taylor series expansion, pseudo-linear equation

CLC Number:

TN91

Xingsong DEND, Liang QI, Yuanjiang ZHU, Fan YANG, Zhichen JIANG, Zhiyong LIU. Positioning method using time difference measurements from multi-station based on precise distance information of observation stations[J]. Systems Engineering and Electronics, 2024, 46(8): 2592-2599.

Figures/Tables 5

References 30

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Positioning method using time difference measurements from multi-station based on precise distance information of observation stations

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