The application of migration to SAR-GPR system for landmine detection

摘要

Rough ground surface, inhomogeneous media and obliquely buried landmine will reduce the efficiency of ground penetrating radar (GPR) for detection of landmine. Also, it is difficult to fix the precise position of obliquely buried landmine. To solve these problems, migration after stacking and migration before stacking are used to process the stepped-frequency CMP data acquired by SAR-GPR system. Horizontally buried landmines under a rough ground surface in inhomogeneous media and obliquely buried landmines under a flat ground surface in homogeneous media were simulated in laboratory experiment. After migration, the target response signal is enhanced and targets could be detected clearly. Also the migration before stacking is efficiency for detection of obliquely buried landmine.