分集MIMO雷达目标回波相关性分析

doi:10.3969/j.issn.1001-2400.2018.04.013

西安电子科技大学学报

分集MIMO雷达目标回波相关性分析

刘洁怡1;张林让1 ;于恒力1;唐世阳1; 赵珊珊2

(1. 西安电子科技大学雷达信号处理国家重点实验室，陕西西安 710071；
2. 南京邮电大学电子科学与工程学院，江苏南京 210023)

收稿日期:2017-09-20 出版日期:2018-08-20 发布日期:2018-09-25
作者简介:刘洁怡(1991-)，女，西安电子科技大学博士研究生，E-mail: liujieyi0220@163.com
基金资助:
国家自然科学基金资助项目(61671361, 61731023, 61601343)；江苏省自然科学基金资助项目(BK20170911)

Analysis of echo correlation in diversity MIMO radars

LIU Jieyi1;ZHANG Linrang1;YU Hengli1;TANG Shiyang1;ZHAO Shanshan2

(1. National Key Lab. of Radar Signal Processing, Xidian Univ., Xian 710071, China;
2. School of Electronic Science and Engineering, Nanjing Univ. of Posts and Telecommunications, Nanjing, 210023, China)

Received:2017-09-20 Online:2018-08-20 Published:2018-09-25

摘要/Abstract

摘要：

针对目标回波的相关性问题，现有模型仅考虑空间和频率间隔的作用，忽略了目标姿态等其他因素的影响．基于以上问题，提出利用直四棱柱散射模型以便更真实地模拟雷达目标；推导出空间和频率分集多输入多输出雷达系统中目标回波相关系数由各雷达站观测角度、目标尺寸、空间和频率间隔等因素共同决定．着重分析了雷达相对目标在不同观测方向时目标的有效孔径随目标空间尺寸和观测角度变化，从而对回波相关系数产生影响．

关键词: 分集多输入多输出雷达, 相关系数, 独立性条件, 散射模型

Abstract:

For the target echo correlation, the existing target model has a huge limitation which just represents the angle or frequency interval with respect to the station, but ignores the influence of target attitude. To solve this problem, this paper utilizes the four straight prism scattering model to better simulate the true target, and the research shows that the correlation coefficient is affected by the observed direction, target size, spatial and frequency interval at the same time in the diversity MIMO radar. The study focuses on the variation of the targets effective size with the observed direction and spatial size in the case that the radars stay at different positions, which influences the correlation coefficient severely.

Key words: diversity MIMO radar, , correlation coefficient, , independence condition, , scattering model

刘洁怡;张林让;于恒力;唐世阳; 赵珊珊. 分集MIMO雷达目标回波相关性分析[J]. 西安电子科技大学学报, 2018, 45(4): 69-74.

LIU Jieyi;ZHANG Linrang;YU Hengli;TANG Shiyang;ZHAO Shanshan. Analysis of echo correlation in diversity MIMO radars[J]. Journal of Xidian University, 2018, 45(4): 69-74.

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分集MIMO雷达目标回波相关性分析

Analysis of echo correlation in diversity MIMO radars

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