Title :
Airborne SAR imagery of ocean surface waves obtained during LEWEX: some initial results
Author :
Vachon, Paris W. ; Olsen, R.B. ; Livingstone, C.E. ; Freeman, Nelson G.
Author_Institution :
Canada Centre for Remote Sensing, Ottawa, Ont., Canada
fDate :
9/1/1988 12:00:00 AM
Abstract :
The potential and the difficulties of using airborne synthetic-aperture radar (SAR) to study ocean surface waves are presented. Airborne C-band SAR imagery obtained with the real-time SAR processor on the Canada Centre for Remote Sensing (CCRS) Convair 580 during the Labrador Extreme Waves Experiment (LEWEX) shows waves propagating through the marginal ice zone as well as through open water regions. Examples are chosen to illustrate both coherent and noncoherent scene motion effects. Coherent scene motion effects include velocity bunching. acceleration defocus, and coherence time limitations. Noncoherent scene motion effects include scanning distortion and look misregistration. The slow platform velocity of airborne SAR precludes replication of spaceborne observations, largely due to coherent motion effects
Keywords :
ocean waves; oceanographic techniques; radar applications; remote sensing; C-band; LEWEX; Labrador Extreme Waves Experiment; North Atlantic; acceleration defocus; airborne SAR imagery; coherent; look misregistration; measurement; noncoherent scene motion effects; ocean wave; radar remote sensing; scanning distortion; surface waves; synthetic-aperture radar; technique; velocity bunching; Airborne radar; Layout; Oceans; Radar imaging; Radar remote sensing; Remote sensing; Sea surface; Spaceborne radar; Surface waves; Synthetic aperture radar;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
