| 基于keystone变换的微弱目标检测 |
| |
| 引用本文： | 张顺生,曾涛.基于keystone变换的微弱目标检测[J].电子学报,2005,33(9):1675-1678. |
| |
| 作者姓名： | 张顺生 曾涛 |
| |
| 作者单位： | 北京理工大学电子工程系,北京 100081 |
| |
| 摘 要： | 提高雷达对微弱目标探测能力的主要方法是增加积累时间.根据传统PD雷达的设计原则,在相参积累时间内,目标的距离走动不能超过半个距离单元,也就是说相参积累时间受限于目标运动.对于高距离分辨雷达或观测高速目标的雷达系统,这种限制是很难满足的.本文提出一种基于keystone变换的运动补偿方案,可以在没有目标运动速度信息条件下校正距离走动,从而使积累时间不再受目标运动的限制.
|
| 关 键 词： | 微弱目标检测 相参积累 keystone变换 距离走动 |
| 文章编号： | 0372-2112（2005）09-1675-04 |
| 收稿时间： | 2004-06-02 |
| 修稿时间： | 2004-06-022005-03-28 |
Weak Target Detection Based on Keystone Transform |
| |
| ZHANG Shun-sheng,ZENG Tao.Weak Target Detection Based on Keystone Transform[J].Acta Electronica Sinica,2005,33(9):1675-1678. |
| |
| Authors: | ZHANG Shun-sheng ZENG Tao |
| |
| Affiliation: | Department of Electronic Engineering,Beijing Institute of Technology,Beijing 100081,China |
| |
| Abstract: | The improvement of the capability to detect moving target with very small radar signature is usually realized by long term accumulation.According to the design principle of conventional PD(Pulse Doppler) radar,target's range migration can't exceed half of the range resolution cell in coherent integration time,which means that the accumulation time is restrained by target's motion.For high range resolution radar or the radar system focusing on the detection of fast moving targets,such a restriction is difficult to satisfy.In this paper,a novel motion compensation method based on keystone transform is presented,which can correct range migration without the exact value of target velocity,and as a result,make the accumulation time free of the restriction due to target motion. |
| |
| Keywords: | weak target detection coherent integration keystone transform range migration |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子学报》浏览原始摘要信息 |
|
点击此处可从《电子学报》下载全文 |
|
