摘要
在散射波干扰方式下,SAR干扰信号的多普勒频率与雷达回波信号不一致,造成虚假图像散焦和成像位置偏移,甚至不能成像,只能算是一种噪声压制干扰。本文提出了一种新的散射波欺骗干扰的实现方法,通过距离向延时和方位向相位补偿,使得散射波干扰信号与回波信号距离向频率、方位向相位一致,取得了较好的干扰效果。
Doppler frequency of Scatter-wave jamming signal differs from the echo. so false image is defocus and imaging position offsets. The jam is only a oppressive jamming. Scatter wave deceptive jamming to spaceborne SAR is proposed. The method is achieved mainly through range direction delay and azimuth direction phase compensation. Range direction frequency and Azimuth direction Phase become to be same between jamming signal and echo.
出处
《微计算机信息》
2009年第10期224-225,195,共3页
Control & Automation
基金
国家自然科学基金(部队863)资助项目:"L波段SAR电子干扰实现"(2005AA1252/1253)
关键词
星载合成孔径雷达
散射波欺骗干扰
距离向延时
方位向相位补偿
Spaceborne SAR
Scatter Wave Deceptive jamming
Range direction delay
Azimuth direction Phase Compensation
