Design principles of MIMO radar detectors
Design principles of MIMO radar detectors
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DOI：
10.1109/taes.2007.4383581
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发表时间：
2007-07-01
影响因子：
4.4
通讯作者：
Lops, Marco
中科院分区：
文献类型：
--
作者：
De Maio, Antonio;Lops, Marco
研究了多输入多输出（MIMO）雷达采用空时编码（STC）实现分集的问题。为此，在简要概述了接收到的回波的模型之后，推导出合适的检测结构，并且其性能以封闭形式表示为杂波统计特性和空时码矩阵的函数。有趣的是，这种接收机需要杂波协方差的先验知识，但检测阈值是功能上独立的。在发射机的设计阶段，我们给出了两个准则的代码的建设：第一个是基于经典的Beschoff界，第二个是信息论的标准。有趣的是，这两个准则得到了相同的码最优性条件，从而在杂波不相关和码矩阵为平方的假设下，对一些著名的全速率空时码进行了特殊化，并给出了详细的性能评估，从而为MIMO雷达系统建立了最优性能。
This paper considers the problem of multiple-input multiple-output (MIMO) radars employing space-time coding (STC) to achieve diversity. To this end, after briefly outlining the model of the received echo, a suitable detection structure is derived, and its performance is expressed in closed form as a function of the clutter statistical properties and of the space-time code matrix. Interestingly, this receiver requires prior knowledge of the clutter covariance, but the detection threshold is functionally independent thereof.At the transmitter design stage, we give two criteria for code construction: the first is based on the classical Chernoff bound, the second is an information-theoretic criterion. Interestingly, the two criteria lead to the same condition for code optimality, which in turn specializes, under the assumption of uncorrelated clutter and square code matrix, in some well-known full-rate space-time codes.A thorough performance assessment is also given, so as to establish the optimum achievable performance for MIMO radar systems.