| 引用本文: | 陈 浩， 叶泽浩， 吴华新， 谢 谠， 吴彩华. 基于子阵的FDA-MIMO雷达去栅瓣方法[J]. 雷达科学与技术, 2020, 18(4): 381-386.[点击复制] |
| CHEN Hao,YE Zehao, WU Huaxin, XIE Dang, WU Caihua. A Grating Lobe Suppression Method for Subarray-Based FDA-MIMO Radar[J]. Radar Science and Technology, 2020, 18(4): 381-386.[点击复制] |
|
| 摘要: |
| 针对频率分集多输入多输出(Multiple-Input Multiple-Output with Frequency Diverse Array, FDA-MIMO)雷达在采用常规线性频率间隔的情况下，出现的距离维栅瓣与距离维主瓣宽度的矛盾问题，提出了一种基于子阵的FDA-MIMO雷达去栅瓣方法，推导出基于子阵的FDA-MIMO雷达闭合方向图表达式，并分析了FDA-MIMO雷达采用子阵去除栅瓣和提高距离维分辨率的原理。仿真结果表明，与通过限定频率间隔选取范围去除距离维栅瓣的常规方法相比，当子阵采用互质大频率间隔时，FDA-MIMO雷达形成的方向图不仅去除了距离维栅瓣，且距离维主瓣宽度更窄，距离维分辨率更高。 |
| 关键词: 频率分集多输入多输出 栅瓣 子阵 距离维分辨率 |
| DOI：DOI:10.3969/j.issn.1672-2337.2020.04.005 |
| 分类号:TN958.5 |
| 基金项目: |
|
| A Grating Lobe Suppression Method for Subarray-Based FDA-MIMO Radar |
|
CHEN Hao,YE Zehao, WU Huaxin, XIE Dang, WU Caihua
|
|
Air Force Early Warning Academy, Wuhan 430019， China
|
| Abstract: |
| In the case of multiple-input multiple-output with frequency diverse array (FDA-MIMO) radar using conventional linear frequency interval, there is a contradiction between the range grating lobes and the mainlobe width in range. A grating lobe suppression method for subarray-based FDA-MIMO radar is proposed and the closed pattern expression is derived based on this model. The principle of FDA-MIMO radar using subarray to remove grating lobes and improve range resolution is also deeply analyzed. Simulation results show that when subarrays use mutual and large frequency intervals, not only the range grating lobes are removed, but also the mainlobe width in range is narrower and the range resolution is higher compared with the conventional method of removing range grating lobes by limiting frequency interval. |
| Key words: FDA-MIMO grating lobe subarray range resolution |
