Observability and Simulation Analysis of Fixed Single Observer Passive Location

doi:10.3969/j.issn.1009-086x.2021.04.011

Abstract

Abstract: To solve the difficulty of analyzing the observability of fixed single station passive location in strongly nonlinear systems,an analysis method based on linear system observability theory is proposed.Taking the target azimuth,azimuth change rate and Doppler frequency change rate as observations,the complex Jacobian matrix is avoided by pseudo-linearization of the observation equation.Observable analysis of uniform velocity,uniform acceleration linear motion and uniform turning motion leads to observable conditions and provides theoretical premise for further research.Simulations examples are given to verify the correctness of the theoretical analysis of observability.

Key words: fixed single observer, passive location, observability, pseudo-linearization, direction of arrival, Doppler frequency

摘要： 针对强非线性系统固定单站无源定位可观测性分析困难的问题,提出基于线性系统可观测理论的分析方法并进行了仿真验证。首先以目标角度、角速度和多普勒频率变化率为观测量,通过对观测方程的伪线性化处理,避免求解复杂的雅克比矩阵,而后对匀速、匀加速直线运动和匀转弯运动进行可观测分析,得出可观测条件,为进一步研究提供了理论前提。最后通过仿真实例检验了可观测性理论分析的正确性。

关键词: 固定单站, 无源定位, 可观测性, 伪线性化, 方位角, 多普勒频率

CLC Number:

XIANG Fei-hua, WANG Jie-gui. Observability and Simulation Analysis of Fixed Single Observer Passive Location[J]. Modern Defense Technology, 2021, 49(4): 72-78.

相飞华, 王杰贵. 固定单站无源定位可观测性及仿真分析[J]. 现代防御技术, 2021, 49(4): 72-78.

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