基于分层聚焦方法的地面和地下目标分辨  

Differentiation of Ground and Underground Objects Based on Layer-Focus Method

作　　者：郭永强 陈自力[2] 

机构地区：[1]测量通信总体研究所,北京100094 [2]军械工程学院光学与电子工程系,河北石家庄050003

出　　处：《计算机测量与控制》2007年第8期1072-1074,1086,共4页Computer Measurement &Control

基　　金：军队武器装备预研项目（6130512）.

摘　　要：文章建立了反映机载条件下进行地下目标探测活动的半空间电磁波传输模型，提出了基于目标成像过程中信号分配处理原理的分层聚焦方法．用于区分地面和地下具有相同回波时间的多个目标．并将其扩展应用于目标的地下深度定位，同时还提出了这种方法不适用于自由空间中不同高度目标的分辨．最后给出了将这种方法用于从地表杂波中提取地下目标信息的良好前景；仿真结果表明，在对回波信号处理进行处理的过程中运用分层聚焦方法以后．具有相同回波时间的不同目标得到了正确的分辨。Half- space model of electromagnetic wave transmission reflecting detection underground objects in airborne radar is founded. On the basis layer focus method is proposed using the principle of signal being distributed and processed, This is used for differentiating multiple objects having the same echo time, After that it is extended for objects depth orientation. But the method isn＇t fit for differentiating objects having different altitude in free space. In the end good prospects are suggested when this method is used for distilling objects information from ground clutter. The results of simulation indicate that after using layer focus method during the SP for echo different objects having the same echo time be exactly differentiated.

关 键 词：半空间模型 分层聚焦 自由空间 

分 类 号：TN958[电子电信—信号与信息处理]