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Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers (1994)
Pacific Grove, CA, USA
Oct. 31, 1994 to Nov. 2, 1994
ISSN: 1058-6393
ISBN: 0-8186-6405-3
pp: 1200-1204
M. Chang , Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Hua Lee , Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
I. Akiyama , Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
ABSTRACT
Frequency modulated, continuous wave (FM-CW) radar has many applications toward NDE of civil structures, as well as the imaging of buried objects. We first introduce the theory behind the operation of stepped chirp FM-CW subsurface radar, and then present an image enhancement technique based on the wavefield statistics. The technique uses the second order statistics of the frequency domain representation of each point in the output to clarify target peaks and reduce the magnitude of surrounding areas. Experimental results using FM-CW ground penetrating radar on buried targets of varying depths are included to demonstrate the effectiveness of stepped chirp radar and the enhancement technique.<>
INDEX TERMS
FM radar, CW radar, radar imaging, image reconstruction, image enhancement, higher order statistics, radar detection, object detection, frequency-domain analysis, image representation, radar applications, nondestructive testing
CITATION

M. Chang, Hua Lee and I. Akiyama, "Image reconstruction and enhancement for subsurface radar imaging using wavefield statistics," Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers(ACSSC), Pacific Grove, CA, USA, 1995, pp. 1200-1204.
doi:10.1109/ACSSC.1994.471649
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