超宽带合成孔径雷达方程研究  

Research on Ultra-Wideband SAR Range Equation

作　　者：常文革[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《系统工程与电子技术》2002年第9期23-26,共4页Systems Engineering and Electronics

摘　　要：超宽带雷达的相对带宽极大 ,波长变化范围大 ,带内系统特性也会随波长发生变化 ,常规雷达方程已不再适于超宽带雷达。从超宽带雷达天线、UHF/VHF波段接收机噪声温度以及最小可检测的信噪比三个方面研究了超宽带合成孔径雷达方程。修正了超宽带合成孔径雷达方程 ,消除了雷达方程中波长因子的影响 ,为超宽带合成孔径雷达的系统设计奠定了基础。Ultra-wideband (UWB) radar operates at so wide bandwiths that the conventional radar equation is not fit for any more. UWB SAR range equation is developed in this paper. Three subjects-UWB radar antenna, UHF/VHF band receiver noise temperature, and the target detection from background, which are main factors in UWB SAR range equation, are studied. The conclusion in the paper is very important and useful to design UWB SAR system.

关 键 词：超宽带合成孔径雷达 超宽带天线 雷达方程 噪声温度 信噪比 

分 类 号：TN958[电子电信—信号与信息处理]