存在观测站位置误差的转发式时差无源定位

doi:10.7527/S1000-6893.2015.0203

Abstract

Abstract:

Location sensors placed in the motion platform may result in position error, which will affect the performance of passive positioning accuracy. Retransmitted measurement of the time difference of arrival(TDOA) needs to transmit emitter signal intercepted by different sensors to the same location, such as the main sensor. For these two issues, a passive location algorithm is proposed based on constrained total least squares(CTLS). First, the nonlinear equation using retransmitted TDOA is converted to a direct linear equation without intermediate variables. Then, the direct linear equation is transformed into a constrained optimization problem and unconstrained optimization problems based on CTLS algorithm. A quasi-closed-form solution to the passive location is derived. Simulations prove that the proposed algorithm achieves better location accuracy than the previous algorithms in the case of higher sensor position error.

Key words: passive localization, time difference of arrival(TDOA), sensor position error, constrained total least squares(CTLS), quasi-closed-form solution

CLC Number:

V247.5
TN971

ZHU Yingtong, DONG Chunxi, LIU Songyang, DONG Yangyang, ZHAO Guoqing. Passive localization using retransmitted TDOA measurements in the presence of sensor position errors[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(2): 706-716.

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Passive localization using retransmitted TDOA measurements in the presence of sensor position errors

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