| 三孔径天线DPCA实现星载SAR动目标检测的方法 |
| |
| 引用本文： | 孙娜,周荫清,李景文.三孔径天线DPCA实现星载SAR动目标检测的方法[J].雷达科学与技术,2004,2(3):147-152. |
| |
| 作者姓名： | 孙娜 周荫清 李景文 |
| |
| 作者单位： | 北京航空航天大学电子信息工程学院,北京,100083 |
| |
| 基金项目： | “十五”预研资助项目 (No .413 2 10 40 2 0 1) |
| |
| 摘 要： | 地杂波抑制是实现星栽合成孔径雷达地面运动目标检测的一个关键问题。本文给出了对DPCA条件下的三孔径天线回波数据，利用类似动目标显示(MTI)雷达中三脉冲对消滤波器的原理来抑制地杂波，从而实现星栽合成孔径雷达(SAR)动目标检测的方法。首先介绍了三脉冲对消器的原理及其频率响应特性，然后在建立星载SAR沿航迹向三孔径天线空间几何模型和机理分析的基础上，推导了对三孔径天线回波用三脉冲对消实现被地面背景杂波淹没的运动目标的检测方法。最后，用计算机仿真结果验证了其有效性。
|
| 关 键 词： | 三孔径天线 DPCA 星载SAR 目标检测 杂波对消 合成孔径雷达 三脉冲对消器 频率响应 |
| 文章编号： | 1672-2337(2004)03-0147-06 |
| 修稿时间： | 2004年3月29日 |
An Algorithm of Spaceborne SAR Moving Target Detection Based on Three-Antenna DPCA |
| |
| SUN Na,ZHOU Yin-qing,LI Jing-wen.An Algorithm of Spaceborne SAR Moving Target Detection Based on Three-Antenna DPCA[J].Radar Science and Technology,2004,2(3):147-152. |
| |
| Authors: | SUN Na ZHOU Yin-qing LI Jing-wen |
| |
| Abstract: | Clutter suppression is a key problem for spaceborne SAR moving target detection. An algorithm of spaceborne SAR moving target detection based on three-pulse canceller under DPCA(Displaced Phase Center Antenna) condition is presented. Firstly,the principle and frequency response property of three-pulse canceller in MTI radar are introduced,then on the basis of spatial geometric model of three- antenna for linear along-track arrangement spaceborne SAR and its principle analysis,a spaceborne SAR/GMTI algorithm is analyzed and derived based on three-pulse canceller. This algorithm can make the detection of moving targets masked by ground clutter. Finally,computer simulation results validate its effectiveness. |
| |
| Keywords: | spaceborne synthetic aperture radar ground moving target indication clutter cancellation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《雷达科学与技术》浏览原始摘要信息 |
|
点击此处可从《雷达科学与技术》下载全文 |
