| 二维相关的G0分布雷达杂波仿真 |
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| 引用本文： | 高彦钊,占荣辉,刘盛启,万建伟. 二维相关的G0分布雷达杂波仿真[J]. 国防科技大学学报, 2014, 36(5): 105-110 |
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| 作者姓名： | 高彦钊 占荣辉 刘盛启 万建伟 |
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| 作者单位： | 国防科技大学电子科学与工程学院,湖南长沙,410073 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | G0分布模型可实现对不同均匀度雷达杂波的较好拟合,二维相关G0分布雷达杂波的精确仿真对雷达系统设计和性能评估具有重要意义。在利用分段多项式拟合的方法近似表示非线性变换的基础上,将二维相关的高斯随机过程作为输入,提出了基于无记忆非线性变换的二维相关G0分布雷达杂波仿真方法。更进一步,为了实现对杂波幅度与相关性的独立控制,并仿真具有同相和正交分量的相参雷达杂波,推导了单视条件下G0分布模型的球不变随机过程特征函数表达式,提出了基于球不变随机过程的仿真方法。仿真结果表明,这两种方法均能够仿真产生满足幅度和相关性要求的二维相关G0分布雷达杂波。
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| 关 键 词： | 雷达杂波 二维相关 无记忆非线性变换 球不变随机过程 G分布 仿真 |
| 收稿时间： | 2013-12-22 |
Simulation of bi-dimensional correlated G0 distributed radar clutter |
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| GAO Yanzhao,ZHAN Ronghui,LIU Shengqi and WAN Jianwei. Simulation of bi-dimensional correlated G0 distributed radar clutter[J]. Journal of National University of Defense Technology, 2014, 36(5): 105-110 |
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| Authors: | GAO Yanzhao ZHAN Ronghui LIU Shengqi WAN Jianwei |
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| Affiliation: | College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073,China;College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073,China;College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073,China;College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073,China |
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| Abstract: | Firstly, the simulation of bi-dimensional correlated G0 distributed radar clutter based on memoryless nonlinear transformation (MNLT) is studied. The nonlinear transformation is approximately expressed by the polynomial curve fitting in each subsection, and then a bi-dimensional correlated Gaussian process is taking as its input to generate the G0 distributed radar clutter with specified correlation properties. The mapping between the correlation functions of the input Gaussian process and the output G0 distributed process is derived as the summation of a power series. Then the simulation method based on spherically invariant random process (SIRP) is studied. The characteristic function of the single-look G0 distribution is derived, and then the amplitude and the correlation properties of the generated clutter is independently controlled through generating the speckle and texture components. At the end, the simulation results validate the effectiveness of the two methods. |
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| Keywords: | Radar Clutter Bi-dimensional MNLT SIRP G0 distribution Simulation |
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