Title :
On the modifier chirp z transform for synthetic aperture radar systems
Author :
Adams, John W. ; Bayma, Robert W. ; Lawrence, Michael E. ; Petrosian, Leon
Author_Institution :
Dept. of Electr. & Comput. Eng., California State Univ., Northridge, CA, USA
fDate :
4/1/1991 12:00:00 AM
Abstract :
A modified chirp z-transform (MCZT) algorithm which has been proposed by W. Lawton (IEEE Trans. Acoust., Speech, Signal Processing, vol.ASSP-36, p.931-3, June 1988) to replace the conventional polar format interpolation in synthetic aperture radar (SAR) systems is discussed. The key assumption used in the MCZT approach is that the spatial-frequency samples can be obtained on a concentric squares (CS) grid. The CS grid is briefly reviewed. The conventional approach to processing CS grid data is described. The MCZT is discussed, and its disadvantages are emphasized
Keywords :
Z transforms; picture processing; radar theory; concentric squares grid; image processing; modifier chirp z transform; synthetic aperture radar systems; Airborne radar; Aircraft; Azimuth; Chirp; Frequency; Image coding; Interpolation; Radar imaging; Signal processing algorithms; Synthetic aperture radar;
Journal_Title :
Signal Processing, IEEE Transactions on
