Operational News

21.01.2009 [DUACS] Switch from Jason-1 to Jason-2

The DUACS system has switched from Jason-1 to Jason-2 this morning (January 21 2009).Jason-2 is used as the reference mission for the orbit error reduction scheme.

When Jason-1 will reach its new orbit, we'll re-integrate it in the multisatellite system (tentative date: February 16)Another news will be published when it will be effective.[details]

14.01.2009 Jason-1 shifted on a new orbit

Jason-1 will be shifted on a new orbit, beginning January 26 (cycle 260) up to February 8 or 9 (beginning of cycle 262). Jason-2 takes over the reference ground track.

11.09.2008 Ssalto/Duacs products updated

After the problem detected on Jason-1 the 2008/08/07, Jason-2 data was integrated in Ssalto/Duacs near-real time processing.

In order to consolidate the quality of Duacs data over the past weeks,  the data were reprocessed (between the 2008/08/07 - 2008/08/29 for the gridded products and between the 2008/08/07 - 2008/09/02 for the along track products). The regional product on the Mediterranean Sea (regional-mfstep) is also concerned for the gridded and along track data. Today, all is nominal.

To be regularly advice of Ssalto/Duacs updates, feel free to contact the Aviso user service (aviso@cls.fr) with "Subscribe Ssalto/Duacs updates" as subject.[details]

26.08.2008 DUACS production resumed this morning

A back up processing chain will be set in place.

Click on the link for more informations...[details]

25.08.2008 SSALTO/DUACS products unavailable since 2008/08/21

The recent Jason-1 safehold mode induced a data gap in the Jason-1 altimeter data series and this gap is larger than the one allowed by the resilience of the DUACS system.

The production is scheduled to be resumed this night.

22.08.2008 Jason-1 back to operational mode

- 2008/08/20 : Jason-1 mass memory has been reconfigured and the payload has been switched on.

- 2008/08/22 : IGDR products are computed again from 2008/08/20 10h52 TU

19.08.2008 Jason-1 latest news

The satellite is out of safehold mode since 2008/08/13.

A problem of mass memory has been detected the 2008/08/14. Investigations are ongoing on CNES and THALES sides.

14.08.2008 Jason-1 OSDR produced once again

Jason-1 OSDR are once again produced nominally. First file generated after end of safehold mode is

JA1_OSD_2PcS20080813_142211_04887

produced at 17:41 (UT) on August 13.

12.08.2008 Jason-1 restarting nominally

Jason-1 is getting out of safehold mode nominally. A single event upset is probably the cause of the problem on wheel #3.

Payload will be re-started on Wednesday (August 13rd), except for Doris which stayed ON. OSDR processing will begin back then, IGDR processing on August 18.

08.08.2008 Jason-1 in safehold mode

The satellite has been in BBQ mode since 2008/08/07 12:31 UT.

A problem was detected on wheel number 3 at 12:31:59.

Last generated products : JA1_OSD_2PcS20080807_094403_06946

First_Measurement_Time = 2008-08-07T09:44:03.723310;

Last_Measurement_Time = 2008-08-07T11:39:49.557237;

Analysis is ongoing