Bearing-Only Initiative Passive Tracking Technique Based On Sea-Based Platform

With the rapid development of high-tech, information warfare and electronic warfare are widely used in wars and defense systems. Passive observation technique, due to its unique technological advantages, such as the long detection distance, good concealment, etc., has wide application in the military field. As a typical representative of the passive observation system, bearing-only passive observation technique has been extensively studied by scholars. This paper conducts a thorough study of bearing-only initiative passive tracking technique based on sea-based platform, and proposes some new solutions for typical problems.Sea-based platform passive observation system is a typical nonlinear system, which easily leads to low tracking accuracy because of the noise and large initial error. Thus a high-efficiency estimation algorithm named CRTS-U is proposed in this paper. The algorithm combines the classical Cubature Kalman filter with Rauch-Tung-Striebel smoother (RTSS) to improve the estimation accuracy.In addition, the control input is treated as a variable to be designed in CTRS-U, which make it possible to obtain the optimal state estimation and optimal ownership maneuver strategy at the same time. Simulation results manifest the superior performance of the CRTS-U.In practical applications of passive tracking technique, the ownership maneuver has an overwhelming influence on tracking accuracy. Only if the optimal ownership maneuver is selected, could the effective tracking of target be realized. For the sake of fuel saving, the fuel consumption index is combined with classical index to construct a new synthetic evaluation criterion. Then this paper presents an iterative algorithm for optimal maneuver solving problems. Simulation results shows the feasibility and superiority of the proposed algorithm.