Title :
Time-domain imaging of radar targets using algorithms for reconstruction from projections
fDate :
8/1/1997 12:00:00 AM
Abstract :
A time domain bistatic inverse scattering identity based on the Radon transform and the space-time magnetic integral equation is derived for real-time use in short pulse radar systems. It is shown that using a sine-modulated exponential pulse (SILIEP) and algorithms for reconstruction from projections provides an edge-enhanced image. A simulation based on stepped frequency, multi-aspect measurements of aircraft models produces clear images with highly defined edges. Images using data from a restricted range of aspect angles are also demonstrated
Keywords :
Radon transforms; aircraft; electromagnetic wave scattering; image enhancement; image reconstruction; integral equations; inverse problems; magnetic fields; modulation; radar applications; radar cross-sections; radar imaging; time-domain analysis; Radon transform; aircraft models; algorithms; aspect angles; edge enhanced image; image reconstruction; multiaspect measurements; projections; radar targets; real-time; short pulse radar systems; simulation; sine-modulated exponential pulse; space-time magnetic integral equation; stepped frequency; time domain bistatic inverse scattering identity; time-domain imaging; Image reconstruction; Integral equations; Inverse problems; Magnetic domains; Radar imaging; Radar scattering; Real time systems; Spaceborne radar; Time domain analysis; Transforms;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
