Title :
An introduction to synthetic-aperture radar
Author :
Brown, William M. ; Porcello, Leonard J.
Author_Institution :
The University of Michigan
Abstract :
One way of achieving fine-resolution terrain imagery using airborne, side-looking radar is to boost frequency; another is to decrease along-track tracking. Neither is attractive. But they would have had to do were it not for coherent wave radar¿upon which synthetic-aperture radar is premised. Using coherent radar, resolution can depend, not on the width of the beam, but on Doppler frequency shift. The azimuthal resolution of side-looking radar can therefore be of the same order of magnitude as that for range resolution. The key to converting the theoretical groundwork into a ``full-bodied´´ system is an appropriate data-processing scheme. And the simplest scheme for working, processing, and deciphering the data is optical.
Keywords :
Airborne radar; Doppler radar; Frequency; Laser radar; Radar antennas; Radar imaging; Radar tracking; Signal analysis; Signal processing; Signal resolution;
Journal_Title :
Spectrum, IEEE
DOI :
10.1109/MSPEC.1969.5213674