空对空单站被动跟踪体制与精度仿真分析

Air-To-Air Single Observer Passive Tracking and Precision Simulation Analysis

比较了空对空单站被动跟踪的只测角(BO)、角度相位差变化率和角度频率变化率三种典型定位跟踪体制的性能。基于状态及不同的测量模型,给出了扩展Kalman滤波(EKF)算法,讨论了测量精度对跟踪效果的影响。仿真结果表明:角度频率变化率体制的可观测性优于BO和角度相位差变化率体制;对辐射源匀速运动,观测器匀速运动即可跟踪;与BO测角体制相比,角度相位差变化率和角度频率变化率体制增加了观测量,跟踪收敛速度快。

The performances of passive tracking with a single air observer with bearing-only（BO）,phase difference rate and frequency rate based on the direction were compared in this paper.The extended Kalman filtering algorithms were given out according to the state models and different measurement models.The effects of measurement accuracy on the tracking were discussed.The simulation results showed that the observation of tracking with frequency rate was better than that of BO and phase difference rate.The tracking would be realized for the emitter in uniform velocity moving when the observer was also in uniform velocity moving.The observations of the tracking with phase difference rate and frequency rate were increased,which the convergence was fast.