基于方位角和多普勒的机动目标无源定位跟踪可观测条件

可观测性分析是无源定位与跟踪系统的前提和基础,只有满足可观测条件才能对系统进行正确求解。应用线性系统理论,以目标方位角和多普勒频率为观测量,对匀加速和匀转弯这两类最常见的机动目标进行了可观测分析,为进一步研究机动目标的无源定位与跟踪提供了理论前提。最后给出了仿真实例,验证了理论分析的正确性。

Observability of Maneuvering Target Passive Tracking with Bearing and Doppler Measurements

Observability analysis is the basic and prime task in passive localization and tracking system,for only when the system is observable,it can be determined with unique and definite solution.In this paper,the observability for two kinds of typical maneuvering motion(constant acceleration and constant turn rate motion) is analyzed from the perspective of linear system theory,utilizing the integrated information of target's angle of arrival and Doppler frequency.This may lay the theoretic foundation for further research of maneuvering target localization and tracking.Finally,two simulation instances are presented to demonstrate the mathematical derivation and the results are consistent with those concluded from theoretic analysis,indicating that the method is correct and valid.