Title :
Migration of underground targets in UWB-SAR systems
Author :
Lertniphonphun, Worayot ; McClellan, James H.
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Ultra-wideband synthetic aperture radar (UWB-SAR) systems can be used for imaging underground targets. However, conventional imaging algorithms that assume a constant velocity of propagation will exhibit degradations such as blurred targets and incorrect target locations. A superior approach is to do the processing by migrating the raw data collected by an array of sensors. In this paper, we use a filtering structure for migration as a 2-D all-pass filter, and present a practical processing method for UWB-SAR imaging. Improvements versus conventional SAR image focusing are included
Keywords :
all-pass filters; array signal processing; buried object detection; filtering theory; radar imaging; synthetic aperture radar; 2D all-pass filter; SAR image focusing; UWB-SAR imaging; UWB-SAR systems; blurred targets; filtering structure; imaging algorithms; processing method; sensors array; target location; ultra-wideband synthetic aperture radar; underground targets imaging; underground targets migration; Filtering; Focusing; Government; Image generation; Image sensors; Iterative algorithms; Pixel; Sensor arrays; Signal processing; Ultra wideband technology;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.901058
