Title :
K-space imaging algorithms applied to UWB SAR
Author :
Cloude, S. ; Milne, A. ; Smith, P.D. ; Thornhill, C. ; Crisp, G.
Author_Institution :
Appl. Electromagnetics Ltd., St. Andrews, UK
Abstract :
We outline a Fourier based algorithm for application to SAR image formation using ultra wide band (UWB) radar signals. We illustrate application of the processor to simulated imagery based on backscatter from canonical targets such as a sphere, dipole and flat plate. The predictions are made directly in the time domain using a finite difference time domain scattering code. We illustrate the effect of antenna distortions on the quality of the imagery obtained and show that important image distortions can arise due to the frequency dependence of the backscattered signal
Keywords :
Fourier transforms; dipole antennas; finite difference time-domain analysis; horn antennas; radar antennas; radar cross-sections; radar imaging; synthetic aperture radar; Fourier based algorithm; K-space imaging algorithms; UWB SAR; antenna distortions; backscatter; backscattered signal; canonical targets; dipole; finite difference time domain scattering code; flat plate; frequency dependence; horn antennas; image distortions; image quality; processor; simulated imagery; sphere; time domain predictions; ultra wide band radar signals; Backscatter; Dipole antennas; Distortion; Finite difference methods; Radar antennas; Radar applications; Radar imaging; Radar scattering; Synthetic aperture radar; Ultra wideband radar;
Conference_Titel :
Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference
Conference_Location :
Austin, TX
Print_ISBN :
0-8186-6952-7
DOI :
10.1109/ICIP.1994.413362
