基于TOA测量的Tn-R型无源雷达目标跟踪算法

针对传统单次无源定位方法对发射站与接收站的布站要求高的缺点，提出了基于到达时间（time of arrival, TOA）测量的Tⁿ-R型外辐射源雷达目标跟踪算法。该算法基于多个发射站获得的目标TOA测量值，采用Levenberg-Marquardt算法快速给出目标位置，然后利用扩展卡尔曼算法（extended Kalman filter, EKF）做滤波跟踪，解决了基本EKF算法的收敛速度慢和受初值影响大、易发散的问题。针对机动目标跟踪，提出了目标机动性判决方法并给出了一种简化的机动目标跟踪方案。针对外场试验数据的实际情况，采用了基于“两发一收”体制的目标跟踪和消除航迹模糊的方法。仿真与外场数据处理均表明，该算法收敛速度快，性能稳定，定位跟踪精度高，可满足实用要求。

Target tracking algorithm in Tn-R passive radar using TOA measurement

A target tracking method based on the time of arrival(TOA) measurement is proposed.This method not only overcomes the disadvantage of special sites-deploying requirement in the location algorithm based on single-time TOA measurement but also greatly improves the location precision.Based on the TOA measurements of multi-stations,an extended Kalman filter(EKF) is used to track targets.To quicken the EKF converging speed,the Levenberg-Marquardt algorithm is utilized to give a more accurate initial value.Then a...