Weak Target Detection Based on Keystone Transform

ZHANG Shun-sheng; ZENG Tao

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Weak Target Detection Based on Keystone Transform

更新时间：2025-07-16

- Weak Target Detection Based on Keystone Transform
- Acta Electronica Sinica Vol. 33, Issue 9, Pages: 1675-1678(2005)
- 作者机构：
  
  北京理工大学电子工程系,北京,100081
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN957
- Published：2005
- 稿件说明：
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ZHANG Shun-sheng, ZENG Tao. Weak Target Detection Based on Keystone Transform[J]. Acta Electronica Sinica, 2005, 33(9): 1675-1678.
DOI：

ZHANG Shun-sheng, ZENG Tao. Weak Target Detection Based on Keystone Transform[J]. Acta Electronica Sinica, 2005, 33(9): 1675-1678. DOI：

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.

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.

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