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dorismail               14-Mar-2016 10:05:04 Message No 1010
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Author: Ferrage Pascale <Pascale.Ferrage@cnes.fr>
Subject: Jason3 DORIS data / sensibility to SAA


Dear  users,

We kindly inform the users of DORIS/Jason3 data that from first observations 
of USO frequency behavior performed in the frame of in-flight commissioning, 
CNES experts suspect a slight sensitivity to radiations :
- much lower  than the one of Jason1 (ten times less),
- but a bit higher than the one of Jason2.

Further investigations are going on to appreciate this sensitivity and its
long term trend.

This sensitivity induces
- no consequence on altimetry,
- almost no impact on orbit computation,
- probably a few centimeters perturbation on Beacon Positionning for
    beacons in visibility of the South-Atlantic Anomaly.

Best regards,

The DORIS Team