A new TMA method for state estimation of underwater target

Wei Sun, Pulong Nan
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引用次数: 1

Abstract

In this paper, a novel target motion analysis (TMA) method using unscented Kalman Filter (UKF) based on modified polar coordinates (MPC) is proposed to improve the localization accuracy for underwater target with constant velocity. The proposed approach utilizes bearings of two-arrays to estimate the localization and velocity of the target. Unlike extended Kalman filter, unscented Kalman Filter (UKF), which is biased and sensitive to the initial value in Cartesian coordinate, the proposed scheme is much more stable and asymptotically unbiased. Moreover, the performances among these schemes are compared based on the noisy bearings from towed array sonar and flank array sonar via Monte Carlo simulations. Simulation results show that the proposed MPC-UKF has better performances with higher numerical stability and little cost of computational complexity.
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一种新的水下目标状态估计TMA方法
为了提高水下等速目标的定位精度,提出了一种基于修正极坐标(MPC)的无气味卡尔曼滤波(UKF)目标运动分析方法。该方法利用双阵列方位来估计目标的位置和速度。与扩展卡尔曼滤波器(unscented Kalman filter, UKF)在笛卡尔坐标下对初始值有偏和敏感不同,该方案更加稳定且渐近无偏。通过蒙特卡罗仿真,比较了拖曳阵声呐和侧翼阵声呐的噪声特性。仿真结果表明,所提出的MPC-UKF具有较好的性能,具有较高的数值稳定性和较小的计算复杂度。
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