COLLINEAR AND CROSS-OVER ADJUSTMENT OF GEOSAT ERM AND SEASAT ALTIMETER DATA IN THE MEDITERRANEAN-SEA

被引:11
作者
KNUDSEN, P [1 ]
BROVELLI, M [1 ]
机构
[1] POLITECN MILAN,DIPARTIMENTO INGN IDRAUL AMBIENTALE & RILEVAMENTO,I-20133 MILAN,ITALY
关键词
D O I
10.1007/BF00690571
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
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.
引用
收藏
页码:449 / 459
页数:11
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