Estimates of the directional ocean wave spectra have been derived from Shuttle Imaging Radar (SIR-B) imagery in regions where nearly simultaneous aircraft-based measurements of the wave spectra were also available as part of the NASA Shuttle Mission 41G experiments conducted from October 7 through 12, 1984. The SIR-B instrument response to a coherently speckled scene of Baie Missisquoi near Montreal, Quebec, is used to estimte the stationary system transfer function in the 15 even terms of an eight-order two-dimensional polynomial. Surface elevation contours are assigned to SIR-B ocean scenes that have been Fourier filtered using an empirical model of the modulation transfer function calibrated with independent measurements of wave height. These empirical measurements of the wave height distribution are illustrated for a variety of sea states.
Deriving two-dimensional ocean wave spectra and surface height maps from the Shuttle Imaging Radar (SIR-B)
Ableitung von zweidimensionalen Meereswellenspektren und Oberflaechenhoehenkarten aus Daten des Shuttle Imaging Radars (SIR-B)
1986
7 Seiten, 13 Bilder, 1 Tabelle, 16 Quellen
Conference paper
English
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