Multichannel fusion of subsurface radar images at different resolutions

作     者：Lombardo, P Magenta, AM Pettinelli, E 

作者机构：Univ Rome La Sapienza INFO COM Dept I-00184 Rome Italy Univ Rome La Sapienza Dept Elect Engn I-00184 Rome Italy 

出 版 物：《IEE PROCEEDINGS-RADAR SONAR AND NAVIGATION》 (IEE Proc Radar Sonar Navig)

年 卷 期：2000年第147卷第3期

页      面：121-133页

核心收录：

学科分类：0810[工学-信息与通信工程] 080904[工学-电磁场与微波技术] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 081105[工学-导航、制导与控制] 081001[工学-通信与信息系统] 081002[工学-信号与信息处理] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程] 

主　　题：Echoes Fusion reactions subsurface fusion (melting) Fusion, biological Wiener filters Filters FUSION frequency channel radar frequency High definition Radar images normal operation 

摘      要：The authors deal with the fusion of multichannel and multiresolution subsurface radar images collected by different frequency channels. Since each radar frequency is most suited for the investigation of a specific range of depths, an accurate analysis of the subsurface over an extended depth interval requires images at different channels. By exploiting the physical model of EM pulse propagation in a stratified medium, three multichannel Wiener filters are derived for estimation of the subsurface impulse response from a set of radar surveys collected at different frequencies. By properly combining the echoes received at the different channels, the filters yield the high resolution of the high-frequency channels for the shallow interfaces and the good SNR of the low-frequency channels for the deep interfaces. A complete theoretical as well as simulated performance analysis is presented for the proposed filters. Moreover, the fusion techniques are applied to real data collected at two sites: a homogeneous subsurface with a number of embedded, known, finite objects and a simple stratified natural terrain. The former is used to assess the proper operation of the multichannel deconvolution, while the latter is used to show that the desired optimal performance is achieved for the interfaces at different depths.