Constrained Least Square Estimation Algorithm for Multisensor Bearings-Only Passive Target Tracking

Author:

Xuan Zhi Wu1,Nie Kai1

Affiliation:

1. PLA 91550

Abstract

The sensor needs to maneuver to get better observability in Bearings-Only passive target tracking with single sensor which makes the observation time longer. Multisensor Bearings-Only passive target tracking can solve the problem using exchange data. So the constrained Least Square Estimation (CLSE) algorithm is proposed for Multisensor Bearings-Only passive target tracking. The constrained condition is introduced to the Least Square Estimation algorithm firstly. Then the eigenvector corresponding to the least eigenvalue of the matrix is used to overcome the shortcoming of Extend Kalman Filter algorithm which needs the initial value. Also the bias problem of Least Square Estimation is conquered. The simulation results show that the CLSE can gradually approach the Cramer-Rao Lower Bound and its precision is better than the Least Square Estimation algorithm. Finally the CLSE is proved to be a gradually, stable and almost unbiased estimation algorithm.

Publisher

Trans Tech Publications, Ltd.

Reference8 articles.

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2. Liu J, Liu Z, Xuan Z L. Study on two cooperative observes TMA algorithm[J]. Warship Science and Technology, 2006, 28(1): 64-69.

3. Guan X, He Y, Yi X. Performance simulation and analysis for double arrays Bearings-Only passive target tracking under water[J]. Journal of System Simulation, 2003, 15(10): 1464-1491.

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5. Vlieger J H, Gmelig Meyling. Maximum Likelihood Estimation for long-range target tracking using passive sonar measurements [J]. Transactions on Signal Processing, 1992, 40(5): 1216-1224.

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