초록 ▼

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 mea

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.

대표청구항 ▼

In a synthetic aperture data processor having pipeline multiple-look data capability with time-multiplexed single-look image lines from an azimuth correlator, the combination comprising means for analyzing the mean energy in an even number of multiple looks of the same target and means responsive to

In a synthetic aperture data processor having pipeline multiple-look data capability with time-multiplexed single-look image lines from an azimuth correlator, the combination comprising means for analyzing the mean energy in an even number of multiple looks of the same target and means responsive to the mean energy for closed-loop control processing of delay control and reference function coefficients for said azimuth correlator to track and refine the radar antenna boresight information.