Three-stage bias compensation method for target localization with inaccurate sensor locations

Abstract This paper proposes a new bearing-only three-stage bias compensation method (BWIVBC) for inaccurate sensor locations. In the first stage, the proposed method (BBC) estimates the target position consistently after compensating for the sensor measurement errors. In the second stage, based on the target estimate of the first stage, the Weighted instrumental variables (WIV) method is used to refine the target location estimation. In the third stage, the bias of the WIV method is further compensated, and the final target location estimate is obtained. The performance advantage of the proposed method is verified by numerical simulation.