Real-time multiple-look synthetic aperture radar processor for spacecraft applications

摘要

A spaceborne synthetic aperture radar having pipeline multiple- look data processing makes use of excessive azimuth bandwidth in radar echo signals to produce multiple-look images. Time multiplexed single- look image lines from an azimuth correlator go through an energy analyzer which analyzes the mean energy in each separate look to determine the radar antenna electric boresight for use in generating the correct reference functions for the production of high quality SAR images. The multiplexed single look image lines also go through a registration delay to produce multiple-look images.