垂直入射大地回波特性测量方法与实验  

Radar Ground Echo Characteristics Measurement Method and Experiment in Vertical Incidence Region

作　　者：徐福元[1] 张海[2] 陈祝明[1] 段锐[1] 成彬彬[2] 

机构地区：[1]电子科技大学电子工程学院,成都611731 [2]中国工程物理研究院电子工程研究所,四川绵阳621900

出　　处：《现代雷达》2011年第10期15-18,27,共5页Modern Radar

基　　金：国家自然科学基金委员会与中国工程物理研究院联合基金(NSAF)资助项目(10776003)

摘　　要：针对垂直入射区雷达大地回波的特性,利用S波段和8 mm波段线性调频连续波雷达散射计,开展了农田和沙地2种地形的回波测量实验,获取了2种地形在S波段和8 mm波段的垂直入射区回波数据,给出了地面反射系数和散射系数的计算方法,并利用该方法由测量回波数据得出了2种地形在S波段和8 mm波段的反射和散射系数。该结果为雷达高度表和微波遥感等系统提供了设计依据。To characterize the radar ground echo in vertical incidence region, S band and 8 mm band linear frequency modulation continuous wave （LFMCW） radar scatterometer are carried out to measure radar ground echo for farmland and sand. A return database in vertical incidence region of two terrain in the S band and 8 mm band is obtained. The calculation method of ground reflection coefficient and scattering coefficient is given, by which the ground reflection and scattering coefficients are obtained with the measured return data of two terrain in the S band and 8 ram band. The experimental results provide the design consideration for the radar altimeter and microwave remote sensing system.

关 键 词：垂直入射 大地回波 反射系数 散射系数 测量方法 

分 类 号：TN957.51[电子电信—信号与信息处理]