Title :
Low frequency range-Doppler SAR processing without secondary range compression
Author :
Horrell, Jasper M. ; Inggs, Mike R.
Author_Institution :
Dept. of Electr. Eng., Cape Town Univ., Rondebosch, South Africa
Abstract :
This paper investigates the effects of severe range curvature on range-Doppler SAR processing for systems with centre frequencies in the range of 100-200 MHz. The focus is on airborne, strip-map, side-looking SAR systems without range walk (i.e. imaging geometries with a Doppler centroid of zero). The effects on the focusing of a simulated point target are investigated. The main objective is to provide an indication to users of range-Doppler processors what performance could be expected at VHF frequencies when no Doppler-frequency-dependent secondary range compression (SRC) is performed
Keywords :
Doppler radar; airborne radar; radar imaging; remote sensing by radar; synthetic aperture radar; terrain mapping; 100 to 200 MHz; Doppler centroid; VHF frequencies; airborne SAR systems; centre frequencies; imaging geometries; low frequency range-Doppler SAR processing; secondary range compression; severe range curvature; side-looking SAR systems; simulated point target; strip-map systems; Azimuth; Chirp; Fourier transforms; Frequency; Geometry; Image coding; Interpolation; Radar remote sensing; Signal analysis; Synthetic aperture radar;
Conference_Titel :
Communications and Signal Processing, 1998. COMSIG '98. Proceedings of the 1998 South African Symposium on
Conference_Location :
Rondebosch
Print_ISBN :
0-7803-5054-5
DOI :
10.1109/COMSIG.1998.736932
