Preliminary estimates of the resolution capability of the SEASAT radar altimeter

Details Preliminary estimates of the resolution capability of the SEASAT radar altimeter Preliminary estimates of the resolution capability of the SEASAT radar altimeter

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..193b&link_type=abstract

Geophysical Research Letters, vol. 7, Mar. 1980, p. 193-196.

Physics

5

Atlantic Ocean, Geoids, Pacific Ocean, Radio Altimeters, Resolution, Seasat Satellites, Height, Instrument Errors, Oceanographic Parameters

Scientific paper

This paper reports preliminary results on the capability of the SEASAT radar altimeter to resolve short wavelength geoid features. Spectral coherence calculated for pairs of repeat tracks provides an estimate of the shortest repeatable (geoid) wavelength that can be resolved in the data. Coherence is high for wavelengths longer than 70 km but is insignificant for wavelengths shorter than about 30 km. For SEASAT, oceanographic effects may be more significant than the instrument noise in limiting geoidal resolution. A parametric error model for SEASAT data based on repeat track analysis is also presented. This model will be useful for filtering or smoothing SEASAT data.

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