DORIS - November 2013
Antenna moved to a new support in Grasse (see dorismail 901)
DORIS - September 2013
DORIS - July 2013
Jason-1 Satellite Decommissioning (see dorismail 886)
Contact was lost with the Jason-1 spacecraft on 21 June 2013. All attempts to re-establish communications were unsuccessful. Jason-1 was passivated and decommissioned on 01 July 2013; terminating the Jason-1 mission after 11.5 years of operations. The Jason-1 science data mission ended on 21 June 2013.
DORIS - June 2013
DORIS - April 2013
DORIS - March 2013
DORIS - February 2013
DORIS - January 2013
SPOT4 trade mission is completed since January 11th 2013 (...) Before bowing out final in June, the satellite will be used to prepare the future with the new experimental mission "Take-5". It will be placed on a new orbit (2.5 km under the current one) to prepare image processing chains of the future mission Sentinel-2 (GMES project) (...) The experiment ends in late May, then, SPOT-4 will be de-orbited in June and DORIS will be switched off.
DORIS - September 2012
DORIS - July 2012
DORIS - May 2012
Status of Jason-1 and Operations in the Geodetic Orbit (see dorismail 818)
Antenna change at Rio Grande (see dorismail 812)
DORIS - March 2012
DORIS - December 2011
DORIS - September 2011
Jason-1 depletion manoeuvers (see dorismail 774)
DORIS - August 2011
Successful launch for HY-2A (see dorismail 765).
The Chinese Haiyang-2A oceanographic satellite with DORIS onboard was successfully launched on August 15, 2011 at 22:57 UTC, from the Taiyuan Satellite Launch Center, China. The launch was carried out by a Long March 4B (Chang Zheng-4B).
Further information on the following web sites:
Antenna change and raising at Noumea (see dorismail 768)
Antenna change at Rikitea (see dorismail 769)
DORIS - June 2011
DORIS - May 2011
A new version of the DORIS internal tie file is available. It contains vectors between successive antenna locations on the same site (see dorismail 748).
Complete redelivery of Cryosat-2 and Jason-2 DORIS 1B files (DORIS 2.2 format) with corrections for Grasse and Gavdos shifted frequency beacons and for Cryosat-2 centre of mass (see dorismail 750). The history of events impacting the data can be found here
The file of Jason-2 mass and center of mass evolution has been corrected (see dorismail 751).
DORIS - February 2011
DORIS - December 2010
DORIS - November 2010
DORIS - October 2010
DORIS - September 2010
ENVISAT orbit change for extended lifetime (dorismail 703). The ENVISAT orbit will be changed in order to extend the mission until 2014 (3-year extension). The adopted solution is to abandon inclination control ensuring a reduction in hydrazine consumption. Thus, 3 pairs of in-plane maneuvers (OCMs) will be performed between October 22 and November 2, 2010
DORIS - July 2010
DORIS - May 2010
DORIS - April 2010
SANB (Santiago): coordinates updated after the magnitude 8.8 earthquake that rocked Chile on February 27th, 2010 (see dorismail 659)
The ESA's CryoSat-2 ice satellite was successfully launched on April 8, 2010 at 15:57 CEST (13:57 UTC) from Kazakhstan, on a Dnepr rocket (see dorismail 657).
Further information is available on the following web sites:
DORIS - February 2010
DORIS - January 2010
DORIS 20th Anniversary
The DORIS system is 20 years old in 2010 and it celebrates a technical, operational and scientific success in the precise determination of satellite orbit (...)
Developed in the early eighties by CNES and IGN (Institut Géographique National) teams with Scientifics from GRGS (Groupe de Recherche en Géodésie Spatiale) and industry, DORIS was first tested on the SPOT-2 satellite, launched on the 22nd January 1990. (...) (see dorismail 643)
Network/ station renovation at Krasnoyarsk (dorismail 641)
DORIS - 2000-2009