基于状态空间模型的多辐射源运动状态分析

利用无源传感器对辐射源进行无源定位是重要的研究课题,受到广泛重视。而利用运动的单一传感器对运动的多个辐射源同时进行运动状态分析则是无源定位问题中的难点。状态空间模型可将辐射源的参数估计和辐射源的运动状态分析有机地联系在一起。本文基于状态空间模型和运动的单一均匀线阵,用信息论准则和ESRPIT算法对辐射源的个数、辐射源的发射频率和空间频率、空间频率变化率进行联合估计,进而对各个辐射源进行运动状态分析(TMA目标运动分析)。

ESTIMJATION OF MOTION PARAMETERS OF MULTIPLE RADIATING SOURCES BASED ON STATED ON STATE-SPACE MODEL

The passive location is a key in many applications. It is a difficult question to estimate trajectories of multiple moving sources with single moving station. This paper deals with the estimation of motion parameters of multiple sources in the passive array processing. It uses basically state-space model of the spatial-temporal data. The interpolation signal procedures play a fundamental role and link the spatial and temporal analysis. Using uniformity linear array and MDL and ESPRIT algorithms, the numbers, center frequencies of sources, spatial frequency and spatial frequency change speed can be estimated together. Further the trajectories (i.e., position and velocity) of every source can be estimated.