摘要
为了有效探测时序差分雷达干涉中的永久散射体,考虑永久散射体对雷达波的强反射特性和散射的稳定性,提出了探测永久散射体的振幅信息双阈值法.该方法根据振幅阈值选取具有强反射特性的点作为永久散射体候选点,然后根据振幅离差阈值,选取散射特性稳定的候选点作为永久散射体.利用上海地区的26幅ERS-1/2 C波段SAR(合成孔径雷达)图像进行了实验,证明该方法是有效和可靠的.
In order to effectively detect permanent scatterers （PSs） in time serial differential radar interferometry, a method, named amplitude information dual-threshold approach （AIDTA）, was proposed based on the characteristics of strong reflection and stable backscattering of PS to radar waves. With this method, those points with strong reflection are firstly selected as permanent scatterer candidates （PSCs）, and then PSs are taken out from the PSCs with stable backscattering. The proposed method has been proved effective and reliable by an experiment with 26 ERS-1/2 C-band synthetic aperture radar （SAR） images of Shanghai.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2007年第4期414-418,共5页
Journal of Southwest Jiaotong University
基金
国家自然科学基金资助项目(40474003
40374008)
教育部优秀教师资助计划(2003109)
关键词
永久散射体
合成孔径雷达干涉
探测
振幅
permanent scatterer
synthetic aperture radar interferometry
detection
amplitude
