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corrections for the effects of significant wave height and attitude on geosat radar altimeter measurementsRange estimates from a radar altimeter have biases which are a function of the significant wave height (SWH) and the satellite attitude angle (AA). Based on results of prelaunch Geosat modeling and simulation, a correction for SWH and AA was already applied to the sea-surface height estimates from Geosat's production data processing. By fitting a detailed model radar return waveform to Geosat waveform sampler data, it is possible to provide independent estimates of the height bias, the SWH, and the AA. The waveform fitting has been carried out for 10-sec averages of Geosat waveform sampler data over a wide range of SWH and AA values. The results confirm that Geosat sea-surface-height correction is good to well within the original dm-level specification, but that an additional height correction can be made at the level of several cm.
Document ID
Document Type
Reprint (Version printed in journal)
Hayne, G. S.
(NASA Wallops Flight Facility Wallops Island, VA, United States)
Hancock, D. W., III
(NASA Wallops Flight Center Wallops Island, VA, United States)
Date Acquired
August 14, 2013
Publication Date
March 15, 1990
Publication Information
Publication: Journal of Geophysical Research
Volume: 95
ISSN: 0148-0227
Subject Category
Distribution Limits