目标先验知识未确知条件下MIMO雷达波形优化Waveform optimization of MIMO radar with imperfect target prior knowledge
雷晓艳,王洪雁
摘要(Abstract):
考虑杂波场景下改善MIMO雷达最差估计性能的稳健波形优化方法,根据最小最大方法,首先基于克拉美-罗界描述稳健波形优化问题。为求解所得复杂非线性问题,提出一种基于对角加载(DL)的迭代方法。此方法中,内层优化首先利用哈达玛不等式被分解为若干个子问题。基于DL方法将子问题可以转化为凸问题,外层优化同样也可转化为凸问题,因而此优化问题可获得高效求解。初始优化问题的最优解可通过对迭代优化结果的最小二乘拟合得到。数值仿真验证了所提方法的有效性。
关键词(KeyWords): 多输入多输出雷达;波形优化;对角加载;参数估计;半定规划;最小二乘
基金项目(Foundation): 国家自然科学基金资助项目:提高复杂环境下地面慢速目标检测性能的MIMO-STAP理论研究(61301258)~~
作者(Author): 雷晓艳,王洪雁
DOI: 10.16652/j.issn.1004-373x.2018.11.003
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