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.
出处
《系统仿真学报》
CAS
CSCD
北大核心
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)
关键词
机载
无源定位
角度
角度变化率
多普勒变化率
airborne
passive location
bearings
bearings changing rate
Doppler changing rate
