存在站址误差时的线性校正TDOA定位算法

doi:10.3969/j.issn.1001-2400.2017.04.019

Abstract

Abstract:

This paper considers the problem of locating a source using time difference of arrival(TDOA) measurements obtained at spatially distributed sensors in the presence of sensor position errors. A linear-correction TDOA localization algorithm that involves closed-form weighted least squares(WLS) optimization only is developed. The proposed method first converts nonlinear TDOA equations into pseudo-linear ones by introducing an intermediate variable and obtains the initial source position estimate using the WLS technique. Then a linear-correction method is applied to improve the initial localization result by estimating and subtracting its positioning error. Simulation results demonstrate the good performance of the proposed method.

Key words: passive localization, time difference of arrival, sensor position error, weighted least squares estimation, Cramer-Rao lower bound

DENG Bing;SUN Zhengbo;YANG Le;HE Qing. TDOA localization with linear-correction in the presence of sensor position errors[J].Journal of Xidian University, 2017, 44(4): 106-111.

References

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TDOA localization with linear-correction in the presence of sensor position errors

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