![]() IDS Workshop |
Current status of the South Atlantic Anomaly corrective model for Jason-1 DORIS Doppler dataMr Jean-Michel LEMOINE(1), Dr Hugues CAPDEVILLE(2), Dr Pierre SENGENES(3) (1) CNES/GRGS, Toulouse, France Session theme: POD Abstract
A corrective model for Jason-1 DORIS Doppler data related to the South Atlantic Anomaly (SAA) has been under development at CNES since September 2003. The frequency of the onboard DORIS Ultra-Stable Oscillators (USO) of Jason-1 are perturbed by the crossing of the SAA, where they encounter a great density of high energy protons. A model for the first DORIS USO of Jason-1, the "redundant" one, covering the period from launch in December 2001 until June 2004, was finalized in December 2004. On June 25, 2004, Jason-1 DORIS receiver was switched from its "redundant" to its "nominal" oscillator. In this presentation
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