| MIMO雷达最大似然参数估计 |
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| 引用本文： | 夏威,何子述,廖羽宇.MIMO雷达最大似然参数估计[J].中国科学：信息科学,2011(2). |
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| 作者姓名： | 夏威 何子述 廖羽宇 |
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| 作者单位： | 电子科技大学电子工程学院; |
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| 基金项目： | 国家自然科学基金(批准号:60672044)资助项目 |
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| 摘 要： | 多输入多输出(MIMO)雷达使用多个天线同时发射多个独立探测信号,并使用多个天线接收目标回波信号.本文考虑了发射空域分集、相干接收MIMO雷达模型及其最大似然(ML)参数估计方法.基于最大似然准则,本文推导了两种渐近最大似然算法.仿真实验的结果表明,在均匀噪声模型中,其中一种渐近算法与基于延迟求和波束形成的最大似然算法性能接近,而另一种渐近算法性能略差,但具有较低的计算复杂度.而在非均匀噪声模型中,本文所提出的两种渐近最大似然算法的性能均优于基于延迟求和波束形成的最大似然算法.
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| 关 键 词： | 多输入多输出(MIMO)雷达 参数估计 最大似然估计 |
On the maximum likelihood method for target localization using MIMO radars |
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| XIA Wei,HE ZiShu & LIAO YuYu School of Electronic Engineering,University of Electronic Science , Technology of China,Chengdu ,China.On the maximum likelihood method for target localization using MIMO radars[J].Scientia Sinica Informationis,2011(2). |
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| Authors: | XIA Wei HE ZiShu & LIAO YuYu School of Electronic Engineering University of Electronic Science Technology of China Chengdu China |
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| Affiliation: | XIA Wei,HE ZiShu & LIAO YuYu School of Electronic Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China |
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| Abstract: | A multiple-input multiple-output(MIMO) radar uses multiple antennas to simultaneously transmit multiple independent probing signals,and uses multiple antennas to receive the backscattered signals.The modeling of MIMO radar with transmit spatial diversity and coherent reception is addressed herein.The maximum likelihood(ML) method for parameter estimation using MIMO radars is considered,and two approximate ML algorithms are proposed.In the uniform noise scenario,one of the proposed algorithms performs simila... |
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| Keywords: | multiple-input multiple-output(MIMO) radars parameter estimation maximum-likelihood |
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