摘要
在单脉冲雷达系统中,当回波受到两个或多个不可区分目标信号(信号在频域、时域上不可区分)的干扰时,得到的目标信号到达方向(DOA)不是所跟踪目标的真实信息,这就影响了系统对目标的可靠跟踪。文献[1]提出了一种对回波是来自单目标还是两个不可区分目标的检测方法。本文对其推广,应用到回波可能来自N个不可区分的目标。仿真表明,多目标情况下的检测概率不一定大于两个目标时的检测概率,处于最大间距上的两目标的信噪比对检测概率影响较大。
When the returns come from two or more unresolved targets interfere (the signals are not resolved in the frequency or time domains ) in a monopulse radar system, the direction-of-arrival (DOA) estimate indicated by the monopulse ratio is not the true information of the tracked target. Then the tracking systems is influenced. In literature [1], An approach has been proposed to detect whether the returns come from a single target or two unresolved targets. Here the above approach has been extended from two to N unresolved targets.The simulation indicates that the detection probability under the N unresolved targets is not sure to exceed that under the two unresolved targets ,which is easily affected by the SNRs of the two target which are separated most among the N targets.
出处
《信号处理》
CSCD
北大核心
2005年第2期153-157,共5页
Journal of Signal Processing
