摘要
多输入多输出(MIMO,Multiple-Input Multiple-Output)雷达用多个发射天线同时发射多个独立信号照射目标,并使用多个接收天线接收目标回波信号.本文研究了MIMO雷达中参数估计的稳健性问题.本文应用幅度相位估计(APES,Amplitude and Phase EStimation)技术,利用目标的方位角最大似然估计值,得到了衰落向量的APES估计算法.考虑到方位角估计的不准确性,借鉴稳健的Capon波束形成器的设计思想,本文推导了衰落向量的稳健的APES估计算法.仿真实验表明,衰落向量的APES算法与稳健的APES算法性能十分接近.因此,衰落向量的APES估计算法是稳健的.
A multiple-input multiple-output （MIMO） radar uses multiple antennas to simultaneously transmit independent signals to illuminate the targets, while uses multiple antennas to receive the reflected signals.In this proposal, the robustness of the parameter esfmation in MIMO radar systems is considered. With the azimuth estimated by maximum likelihood method, the estimate of the fading vector is obtained by applying the amplitude and phase estimation （APES） technique. Motivated by the development of robust Capon beamformer （RCB）, a robust APES estimator of the fading vector is derived as well by considering the inaccuracy estimation of the azimuth. The simulation results show that both APES estimators behave rather similar. And hence, the APES algorithm is robust in the parameter estimation of MIMO radars.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2008年第9期1804-1809,共6页
Acta Electronica Sinica
基金
国家自然科学基金(No.60672044)
