Resolution of the ocean wave propagation direction in SAR imagery

Journal Article · Mon Dec 31 23:00:00 EST 1990 · IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/36.103299· OSTI ID:6083226

Vachon, P W; Raney, R K ^[1]

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1. Canada Centre for Remote Sensing, 2464 Sheffield Road, Ottawa, ON, (Canada)

This paper reports on the resolution of the ocean wave propagation direction in SAR imagery. There is an inherent 180{degrees} ambiguity in the derived wave propagation direction when using conventional spectral analysis techniques on standard synthetic aperture radar (SAR) image products. Three different techniques are successfully used to resolve this ambiguity in propagation direction using a single pass of airborne SAR data. The fact that the SAR is characterized by a large time-bandwidth product is used to advantage. Therefore, a sequence of individual looks extracted from the Doppler spectrum represents images of the scene collected at a sequence of discretely delayed intervals of time. The techniques utilized include cross-correlation-based motion analysis of a pair of looks, phase weighting based upon a pair of looks and the ocean wave dispersion relation, and a three-dimensional spectral analysis. The phase weighting technique is also demonstrated for a SEASAT SAR scene.

• OSTI ID: 6083226
• Journal Information: IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers); (United States) Vol. 29:1; ISSN 0196-2892; ISSN IGRSD
• Country of Publication: United States
• Language: English

Related Subjects

16 TIDAL AND WAVE POWER
160100* -- Tidal & Wave Power-- Resources & Availability-- (1990-)
DISPERSION RELATIONS
DOPPLER EFFECT
GRAVITY WAVES
IMAGES
MEASURING INSTRUMENTS
OCEANIC CIRCULATION
RADAR
RANGE FINDERS
REMOTE SENSING
RESOURCE ASSESSMENT
SATELLITES
SEASAT SATELLITES
SPECTRAL RESPONSE
SYNTHETIC-APERTURE RADAR
THREE-DIMENSIONAL CALCULATIONS
WATER WAVES
WAVE PROPAGATION