FN Archimer Export Format PT J TI AltiKa: a Ka-band altimetry payload and system for operational altimetry during the GMES period BT AF VINCENT, Patrick STEUNOU, N CAUBET, E PHALIPPOU, L REY, L THOUVENOT, E VERRON, J AS 1:1;2:2;3:3;4:3;5:3;6:2;7:4; FF 1:;2:;3:;4:;5:;6:;7:; C1 IFREMER, F-92138 Issy Les Moulineaux, France. Ctr Natl Etud Spatiales, F-31401 Toulouse 9, France. Alcatel Alenia Space, F-31037 Toulouse 1, France. LEGI, UMR 5519, F-38041 Grenoble 9, France. C2 IFREMER, FRANCE CNES, FRANCE ALCATEL ALENIA SPACE, FRANCE LEGI, FRANCE IN WOS Ifremer jusqu'en 2018 IF 1.373 TC 57 UR https://archimer.ifremer.fr/doc/00284/39508/38003.pdf LA English DT Article DE ;altimeter;radiometer;ocean mesoscale circulation;Ka-band AB This paper describes the Ka-band altimetry payload and system that has been studied for several years by CNES, ALCATEL SPACE and some science laboratories. Altimetry is one of the major elements of the ocean observing system to be made sustainable through the GEOSS ( Global Earth Observation System of Systems) and GMES ( Global Monitoring of the Environment and Security) programs. A short review of some mission objectives to be fulfilled in terms of mesoscale oceanography in the frame of the GEOSS and GMES programs is performed. To answer the corresponding requirements, the approach consisting in a constellation of nadir altimeter is discussed. A coupled Ka-band altimeter-radiometer payload is then described; technical items are detailed to explain how this payload shall meet the science and operational requirements, and expected performances are displayed. The current status of the payload development and flight perspectives are given. PY 2006 PD MAR SO Sensors SN 1424-8220 PU Molecular Diversity Preservation International VL 6 IS 3 UT 000237609200006 BP 208 EP 234 DI 10.3390/s6030208 ID 39508 ER EF