摘要
多站时差序列定位法是一种针对脉冲辐射源的无源定位方法,它是利用短时间内获得的大量时差信息进行定位。文中基于时差序列的定位体制,提出了2个实用的多机定位算法。在目标脉冲波束扫过我方飞行编队的短时间内,将载机位置近似为常值,从而可以使用能够瞬时定位的两步加权最小二乘算法,当测量误差比较大时,采用最大似然法进一步提高定位精度。仿真结果表明,文中提出的基于时差序列的多机定位算法能够达到较高的定位精度,具有很好的工程实用价值。
Multi-plane passive location based on TDOA sequence is a method of locating impulse radiation sources, using plenty of TDOA information to locate the target in a very short time. Based on TDOA sequence, two practical multi-plane passive location al-gorithms are proposed. During the short time of the target＇s pulse beam scanning the flight team, the positions of planes are approx- imately regarded as constants, so that two-step WLS algorithm can be used to locate the target instantly. ML algorithm could be used to improve the accuracy of location in the condition of low TDOA measurement accuracy. Simulation results show that the al-gorithms orooosed can achieve high location accuracy, which means good utility value.
出处
《现代雷达》
CSCD
北大核心
2013年第3期45-49,共5页
Modern Radar
关键词
时差序列
两步加权最小二乘
最大似然法
time-difference-of-arrival sequence
two-step weighted least-squares
maximum likelihood method
