Constrained transmit beampattern design for colocated MIMO radar
Constrained transmit beampattern design for colocated MIMO radar
复制标题
共置 MIMO 雷达的约束发射波束方向图设计
DOI：
10.1016/j.sigpro.2017.10.010
复制
发表时间：
2018-03-01
影响因子：
4.4
通讯作者：
Kong, Lingjiang
中科院分区：
文献类型：
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作者：
Yu, Xianxiang;Cui, Guolong;Kong, Lingjiang
研究了多输入多输出(MIMO)雷达波束合成的约束波形设计问题。具体地说，借助于与半定规划(SDP)相关的技术，我们首先最小化积分旁瓣电平(ISL)来优化波形协方差矩阵，该矩阵实施了均匀的基本功率限制以及3dB带宽限制。然后，基于最小二乘(LS)方法，提出了在恒模约束下设计波形的现有循环算法(CA)和一种新的序贯迭代算法(SIA)，以及允许所设计的波形与给定参考波形共享相似特征的相似性约束。特别是，该算法直接对目标函数进行优化，每次迭代都将多维优化问题转化为多个具有闭合解的一维优化问题。最后，我们通过数值模拟评估了该技术的有效性，并将其与CA进行了比较。(C)2017爱思唯尔B.V.保留所有权利。
This paper considers the constrained waveform design for Multiple-Input Multiple-Output (MIMO) radar to synthesize a desired beampattern. Specifically, resorting to SemiDefinite Programming (SDP) related technique, we first minimize Integration Sidelobe Level (ISL) to optimize the waveform covariance matrix enforcing a uniform elemental power restriction as well as a 3dB bandwidth constraint. Then, based on Least Square (LS) approach, we present the existing Cyclic Algorithm (CA) and a new Sequential Iterative Algorithm (SIA) to devise the waveform under a constant modulus constraint, and a similarity constraint to allow the designed waveform sharing the similarity feature with a given reference waveform. In particular, the proposed SIA directly optimizes the objective function and its each iteration turns the multidimensional optimization problem into multiple one-dimensional optimization problems with closed-form solutions. Finally, we assess the effectiveness of the proposed technique through numerical simulations in comparison with CA. (C) 2017 Elsevier B.V. All rights reserved.