Title :
Improving slant-range resolution with multiple SAR surveys
Author :
Prati, C. ; Rocca, E.
Author_Institution :
Dipartimento di Elettronica, Politecnico di Milano, Italy
fDate :
1/1/1993 12:00:00 AM
Abstract :
Across-track resolution of a spaceborne synthetic aperture radar (SAR) system is limited by power and data rate constraints. The authors derive and discuss a new technique for increasing the across-track resolution of objects that do not change with time, using multiple surveys of the same area from different off-nadir angles. Precise information on the spaceborne trajectories are not requested since they can be derived from SAR interferometry. Simulated data show that theoretical derivations are in good agreement with practice
Keywords :
aerospace instrumentation; microwave imaging; radar systems; synthetic aperture radar; SAR interferometry; across-track resolution; data rate constraints; microwave imaging; multiple SAR surveys; multiple surveys; off-nadir angles; slant-range resolution; spaceborne synthetic aperture radar; spaceborne trajectories; Antenna measurements; Azimuth; Extraterrestrial measurements; Image resolution; Pulse measurements; Pulse modulation; Radar antennas; Signal resolution; Spaceborne radar; Synthetic aperture radar;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
