一种多通道InSAR干涉图的仿真方法  

An interferogram simulation method for multi-channel In SAR

作　　者：袁志辉[1] 陈立福[1] 樊绍胜[1] 郜参观[2] 

机构地区：[1]长沙理工大学电力与交通安全监控及节能技术教育部工程研究中心,长沙410004 [2]伊犁师范学院电子与信息工程学院,新疆伊宁835000

出　　处：《中国科学院大学学报（中英文）》2015年第4期542-548,共7页Journal of University of Chinese Academy of Sciences

基　　金：国家自然科学基金(41201468)资助

摘　　要：为了简化多通道In SAR数据仿真的步骤,给多通道In SAR技术的研究提供参数可控的仿真数据,提出一种多通道In SAR干涉图的仿真方法.方法由已知的数字高程模型(DEM)和系统参数计算得到每个干涉通道的真实干涉相位,并根据各种噪声引起的去相关计算相应的相干系数,然后利用舍选法生成相应的相位噪声加入到真实干涉相位中,这样便得到所需的多通道In SAR干涉图.分析和仿真结果表明,该方法简便易行,且严格考虑了干涉相位噪声的概率密度函数,为各种多通道In SAR技术的性能对比和定量分析提供合适的仿真数据.In order to simplify the procedure of multi-channel In SAR interferogram simulation and to provide simulated data with adjustable parameters for studies of multi-channel In SAR technology,we propose a multi-channel In SAR interferogram simulation method. The method uses the available DEM and system parameters to calculate the real interferometric phase for each channel,and calculates the coherence caused by various kinds of noise. Then the method utilizes acceptancerejection method to generate the corresponding phase noise,and adds it to the real interferometric phase. So the needed multi-channel In SAR interferograms are obtained. Analysis and simulation results indicate that the approach is simple and convenient. The approach considers the interferometric phase noise＇s probability density function strictly,and it provides suitable simulation data sets for the performance comparison and quantitative analysis of various kinds of multi-channel In SAR technique.

关 键 词：干涉合成孔径雷达 多通道 干涉图仿真 舍选法 

分 类 号：TP957.52[自动化与计算机技术]