Observer maneuver strategy for leg-by-leg bearing-only tracking

被引：0
|
作者：
Xi C. [1 ]
Cai Z. [1 ]
Yuan J. [1 ]
机构：
[1] College of Electronics Engineering, Naval University of Engineering, Wuhan
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2021年 / 43卷 / 09期
关键词：
Bearing-only tracking; Fisher information matrix; Leg-by-leg maneuver; Maneuver strategy; Modified polar coordinate;
D O I：
10.12305/j.issn.1001-506X.2021.09.06
中图分类号：
学科分类号：
摘要：
Aiming at the problem that the Fisher information matrix (FIM) cannot be calculated due to the unknown target distance before the observation station maneuvers, this paper proposes a method to calculate the FIM and then design the maneuver strategy from two aspects of roughly estimating the target initial distance and reducing the influence of rough estimation error on the determinant of FIM. Firstly, the system model is established in the modified polar coordinate system, and the calculation method of FIM in the leg-by-leg maneuver mode of observation station is described. Secondly, the initial state of the target is roughly estimated by assuming the target speed, and the target speed assumption method is proposed to minimize the error of the normalized initial distance rough estimation. Then, the determinant of FIM is approximated and expanded by polynomials, and the influence of state estimation error on the determinant of FIM is reduced by controlling the ratio of front and back leg segments. Finally, the feasibility and effectiveness of the proposed design method of maneuver strategy are verified by simulation. The results show that for the typical underwater target tracking scene, the effective estimation probability of FIM determinant is 76.7%, and the average relative estimation error is 0.12. © 2021, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：2413 / 2421
页数：8
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