The SeaWinds on QuikSCAT sensor is a Ku band scatterometer operating at 13.46 GHz, using a 1-meter-diameter rotating disk that produces two spot beams, sweeping in a circular pattern. The incidence angles are respectively 46° and 54° for the inner and outer beams. The satellite altitude is about 800 km ; swath is 1800 km large for the outer beam and 1414 km for the inner beam. The polarisation is horizontal for the inner beam and vertical for the outer beam. For each 25 x 25 km cell, called Wind Vector Cell (WVC), SeaWinds measures up to 42 Sigma0 which are used to retrieve the 10 meters surface wind (module and direction).
QuikSCAT data are processed by NASA and distributed to the scientific community by JPL (Jet Propulsion Laboratory). They are available either by FTP, or on exabyte.
CERSAT retrieves these data by Internet, or on exabyte, and makes them available to the European Community the day after. Colocated products with ERS AMI-Wind, ERS Radar Altimeter, topEX Altimeter and SSM/I are generated within 2 weeks. They are distributed on FTP and through our WWW server.