Abstract
The computation of mean sea surface heights from a set of collinear Geosat ERM altimeter data tracks was carried out in a collinear adjustment, where 1 cy/rev cosine and sine coefficients for each track are estimated, so the differences between the collinear tracks are minimized. Then bias/tilt cross-over adjustments of stacked Geosat and Seasat altimetry were carried out. The problems with the free surface in the cross-over adjusted altimetric surface were treated using the absolute sea surface heights relative to the geoid model OSU89B. In a combined adjustment of the two altimeter data sets using cross-over and height informations simultaneously a RMS of the cross-overs of 0.080 m and a RMS of the sea surface heights relative to OSU89B of 0.611 m were obtained.
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Knudsen, P., Brovelli, M. Collinear and cross-over adjustment of Geosat ERM and Seasat altimeter data in the Mediterranean Sea. Surv Geophys 14, 449–459 (1993). https://doi.org/10.1007/BF00690571
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DOI: https://doi.org/10.1007/BF00690571