Title :
A postfilter method for refraction and dispersion effects compensation in GPSAR image
Author :
Tian, Jin ; Zhi-Min, Zhou ; Wen-ge, Chang ; Qian, Song
Author_Institution :
Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha
Abstract :
Refraction and dispersion make the subsurface targets defocus in ground penetrating SAR (GPSAR). In this paper, a postfilter is proposed to compensate the refraction and dispersion effects, which is more computationally efficient than the previously proposed prefilter method. The postfilter method is tested by the field data of the rail-GPSAR system to yield satisfactory results
Keywords :
dispersion (wave); electromagnetic wave refraction; filtering theory; ground penetrating radar; radar imaging; synthetic aperture radar; GPSAR image; dispersion effect; ground penetrating synthetic aperture radar; postfilter method; refraction effect; Dispersion; Electromagnetic modeling; Electromagnetic refraction; Electromagnetic scattering; Focusing; Integrated circuit modeling; Permittivity; Reflectivity; Soil; Transmitting antennas; Ground penetrating; postfilter; refraction and dispersion; synthetic aperture radar;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343523
