对海面远距离运动目标定位跟踪的IMM算法研究  

IMM algorithm for locating and tracking of offing remote moving target

作　　者：杨士英[1] 罗景青[2] 

机构地区：[1]空军雷达学院电子对抗系,武汉430019 [2]电子工程学院信息工程系,合肥230037

出　　处：《电光与控制》2008年第5期7-11,共5页Electronics Optics & Control

基　　金：国家“八六三”项目(2006AA701303)

摘　　要：研究了平流层三站测时差无源定位系统对海面远距离运动目标定位与跟踪的滤波算法问题。将IMM滤波器应用到平流层三站测时差定位系统中,采用三模型组合的IMM滤波算法,首先通过时差测量参数计算出粗略的定位结果,接下来采用IMM滤波算法逐步估计出运动辐射源的速度,并修正初始的定位结果,提高定位精度。仿真结果表明,基于IMM滤波器的三站时差定位系统具有较快的收敛时间、较高的跟踪精度和适中的计算复杂度,能够对不同强度的机动目标进行定位与跟踪,很好地解决了三站时差定位系统对海面远距离运动辐射源定位跟踪的算法问题。还提出了利用回归处理的方法进一步提高固定目标定位精度的思想。Based on the stratospheric tri-station Time Difference of Arrival（TDOA） passive locating system, the passive locating and tracking algorithm is studied. The IMM algorithm is applied to the stratospheric tri-station TDOA location system. Based on three integrated models of IMM, firstly a rough locating result is figured out based on TDOA measurements, then the IMM is used to estimate the velocity and acceleration of maneuvering targets, and the initial locating result is modified for improving the locating precision. The simulation indicated that the algorithm has short convergence time, high tracking precision and proper calculation cost, and has the adaptive capability for tracking different maneuvering targets. At the same time, the locating and tracking precision of offing remote moving targets is resolved successfully. An idea is also presented to improve locating accuracy of fixed targets with the recursive method.

关 键 词：平流层 时差 运动目标 IMM 定位跟踪 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] TN953.7[电子电信—信号与信息处理]