基于多普勒变化率的机载无源定位研究  

Research on Airborne Passive Location Using Doppler Changing Rate

作　　者：牛新亮[1] 赵国庆[1] 刘原华[2] 常虹[1] 

机构地区：[1]西安电子科技大学电子对抗研究所,西安710071 [2]西安电子科技大学综合业务网国家重点实验室,西安710071

出　　处：《系统仿真学报》2009年第11期3370-3373,共4页Journal of System Simulation

基　　金：十一五武器装备预研基金(9140A07020806DZ01)

摘　　要：针对机载无源定位可观测性弱、收敛速度慢、定位精度差等问题,提出了一种利用角度、角度变化率和多普勒变化率对地面目标进行定位的方法。给出了该方法的定位表达式和多次测量EKF滤波后的结果,并将该方法与只测角方法及角度变化率方法进行了比较。计算机仿真表明,该方法可观测性更强、收敛速度更快、定位精度更高。In order to enhance the observability, increase the convergence speed and improve the locating precision in the airborne passive location, a novel method using bearings, bearings changing rate and Doppler changing rate was proposed. The locating expressions and the extended Kalman filtering results were proposed. A comparison between the new method and the method using beatings-only or bearings changing rate was proposed. Simulation results show that comparing with the usual methods, the new method has a stronger observability, higher convergence speed and higher locating precision.

关 键 词：机载 无源定位 角度 角度变化率 多普勒变化率 

分 类 号：TN971[电子电信—信号与信息处理]