Envisat Radar Altimeter Calibration with High-sea Gps Buoys
نویسندگان
چکیده
The environmental satellite ENVISAT was successfully launched by the European Space Agency ESA in March 2002 and carries among other sensors a radar altimeter which is capable of measuring the height between sea surface and satellite with a precision of a few centimetres. Unfortunately, radar altimeters of this kind exhibit a bias which cannot be determined à priori with help of laboratory measurements. Consequently, an elaborate field campaign is to be conducted in order to recover the altimeter’s offset. This report portrays the efforts carried out to measure this bias with help of high-sea buoys which are equipped with GPS-receivers and presents important results.
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