Maneuvering of the observation platform is required during bearings-only target motion analysis using single array , this would not be allowed in complex sea warfare environment, this paper utilizes bearings of two arrays to analyze the state of the target, and usually some known constraint information such as constraints of range and course, is ignored during target motion analysis, this is a waste of information, to avoid this phenomenon, this paper introduces an inequality constrained cubature kalman filter to estimate the state of the target. The effectiveness of the method is verified through simulation and the experiment.
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