摘要
导出了金属立体目标天线温度对比度的一般表达式 .类比雷达的散射截面 ,提出了金属立体目标的狭义和广义的等效辐射截面和等效辐射截面系数的概念 ,为验证狭义和广义等效辐射截面系数的可行性 ,计算了金属半球在混凝土背景上的天线温度对比度和等效辐射截面系数 ,并对误差进行了分析 .计算的结果证明用狭义和广义等效辐射截面系数来计算立体金属目标的天线温度对比度是可行的 .
A general formula was given for calculating the antenna temperature contrast (ATC) of metal solid objects. By comparison with radar cross section, the conceptions of the special and general equivalent radiometric section coefficients (ERSC) were brought up. In order to validate the feasibility of the special and general ERSC, the ATC and the special and general ERSC of metal semi sphere on the concrete background were computed. The errors were analyzed. The results proved that it was feasible to count the ATC of metal solid objects by using its special and general ERSC.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第3期31-33,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
航空航天工业总公司创新基金资助项目
关键词
微波辐射计
天线温度对比度
狭义等效辐射截面系数
广义等效辐射截面系数
microwave radiometer
antenna temperature
special equivalent radiometric section coefficient
general equivalent radiometric section coefficient
