宽带MIMO雷达角度估计的统计分辨力.doc

文档介绍：
宽带 MIMO 雷达角度估计的统计分辨力#
周小利,王宏强,程永强,秦玉亮**
(国防科技大学电子科学与工程学院,长沙 410073)
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摘要:针对传统雷达分辨理论无法反映环境噪声和目标参数对 MIMO 雷达实际分辨能力的
影响的问题,研究了基于统计分辨理论的宽带 MIMO 雷达角分辨力。建立了宽带 MIMO 雷
达信号模型,将目标分辨问题等效为二元假设检验,利用广义似然比检验方法,推导了在给
定虚警概率和检测概率时宽带 MIMO 雷达的统计角分辨力,分析了检验参数、信噪比、目
标参数以及 MIMO 雷达发射波形参数和几何参数对分辨力的影响,得出与传统分辨理论相
比更能反映雷达实际分辨能力的结果,可为雷达系统设计提供优化准则。
关键词:信号处理;MIMO 雷达;统计角分辨力;宽带;假设检验;广义似然比检验
中图分类号:TN957
Statistical Resolution Limit of Angle Estimation for
Wideband MIMO Radar
ZHOU Xiaoli, WANG Hongqiang, CHENG Yongqiang, QIN Yuliang
(School of Electronic Science and Engineering, National University of Defense Technology,
Changsha 410073, China)
Abstract: The angular resolution limit (ARL) for wideband MIMO radar based on the statistical
resolution theory is presented due to the problem that the effects of noise and parameters of the target
on the actual resolution ability of the MIMO radar couldn’t be reflected by the traditional resolution
theory. The signal model of wideband MIMO radar is set up, then the resolution problem is modeled as
a binary hypothesis test. The statistical angular resolution limit (SARL) for wideband MIMO radar
which is based on the generalized likelihood ratio test (GLRT) is derived when the probability of false
alarm and the probability of detection are given. The influences of detection parameters, the signal to
noise ratio (SNR),