Collinear and cross-over adjustment of Geosat ERM and Seasat altimeter data in the Mediterranean Sea |
| |
| Authors: | P Knudsen M Brovelli |
| |
| Institution: | (1) Kort- og Matrikelstyrelsen, Rentemestervej 8, DK-2400 København, NV, Denmark;(2) Dipartimento di Ingegneria Idraulica, Ambientale e del Rilevamento, Politecnico di Milano, Piazza Leonardo da Vinci, 32, I-20133 Milano, Italy |
| |
| 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. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
