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Note that most of the files available at ftp://ftp.ids-doris.org/pub/ids/ can be seen at https://ids-doris.org/documents/BC/ too.

Here are gathered documents and input material useful for data and product users

Categories: General | DORIS system | Space segment | Ground segment | Observations | Products | Analysis: models

 

 

General

• See IDS data structure and formats  for File naming conventions, Data Centers structure, Formats
• See Outreach material for description of the DORIS system, leaflets, videos, newsletters
• See Overview of the documentation for all links to the pages where the documentation provided by the IDS is stored.

 

 

The DORIS system

• DORIS system definition 
• DORIS system events: satellites, instruments, satellite control center, SSALTO (control and data processing center), ...

 

 

Space segment

• The DORIS constellation: COSPAR numbers, Launch and Orbital information
• Spacecraft ID correspondence table for orbit exchange file (SP3c code, NORAD number...)

Technical documents

• Modelling of the DORIS instruments (description of measurement types; ground, propagation and onboard instrument models):  
  • 1G (Spot-2, -3, -4, Topex) and 2G (Envisat) 
  • 2GM (Spot-5, Jason-1) 
    
• Macromodels:  DORIS satellites models implemented in POE processing 
• DORIS USO sensitivity to radiations  
• Cryosat-2 precise orbit context  
• Cryosat-2 characteristics for DORIS calibration and POD processing  
• HY-2A input data for Precise Orbit Determination 
• HY-2C input data for Precise Orbit Determination 
• Jason-1 postlaunch satellite characteristics for POD activities
• Jason-2 satellite geometry  
• Jason-3 characteristics for POD activities  
• Saral characteristics for DORIS calibration plan and POD processing  
• Sentinel-6A POD context 
• Swot characteristics for POD processing 
• Attitude laws of Swot and Sentinel-6 

Data files

• Attitude:
  • Envisat (alt.: ftp://ftp.ids-doris.org/pub/ids/satellites/en1att.txt)
  • Jason-1 (alt.: ftp://ftp.ids-doris.org/pub/ids/satellites/ja1att.txt)
  • Jason-2 (alt.: ftp://ftp.ids-doris.org/pub/ids/satellites/ja2att.txt)
  • Jason-3 (alt.: ftp://ftp.ids-doris.org/pub/ids/satellites/ja3att.txt)
  • Sentinel-6A (alt.: ftp://ftp.ids-doris.org/pub/ids/satellites/s6aatt.txt)
  • Swot (alt.: ftp://ftp.ids-doris.org/pub/ids/satellites/swoatt.txt)
  • Topex (alt.: ftp://ftp.ids-doris.org/pub/ids/satellites/topatt.txt)
• Quaternions:
  • Cryosat-2
    • TU Delft : ftp://dutlru2.lr.tudelft.nl/pub/ejo/cryosat2/quaternion/; description 
    • ESA: see here how to get access or contact This email address is being protected from spambots. You need JavaScript enabled to view it.; documentation: algorithm description , product format specifications 
  • Jason-1 (CDDIS, IGN: ftp://doris.ign.fr/pub/doris/ancillary/quaternions/ja1)
  • Jason-2 (CDDIS, IGN: ftp://doris.ign.fr/pub/doris/ancillary/quaternions/ja2)
  • Jason-3 (CDDIS, IGN: ftp://doris.ign.fr/pub/doris/ancillary/quaternions/ja3), documentation 
  • Sentinel-3A&B and Sentinel-6A (Copernicus Sentinels POD data hub)
    • format description (extract); 
    • CPOD format specification; 
    • API user guide;
    • example of API request
  • Swot body quaternions and solar panel angles (CDDIS, IGN: ftp://doris.ign.fr/pub/doris/ancillary/quaternions/swo), 
    • documentation quaternions 
    • documentation solar panel angles
• Maneuvers:  description file
  • Cryosat-2 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/cs2man.txt) 
    • time frames when nominal attitude law off (ftp://thales.lr.tudelft.nl/pub/ejo/cryosat2/quaternion/attlaw.d); see description )
  • Envisat (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/en1man.txt)
  • HY-2A (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/h2aman.txt)
  • HY-2C (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/h2cman.txt)
  • HY-2D (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/h2dman.txt)
  • Jason-1 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/ja1man.txt)
  • Jason-2 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/ja2man.txt)
  • Jason-3 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/ja3man.txt)
  • Saral (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/srlman.txt)
  • Sentinel-3A (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/s3aman.txt)
  • Sentinel-3B (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/s3bman.txt)
  • Sentinel-6A (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/s6aman.txt)
  • Spot2 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/sp2man.txt)
  • Spot3 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/sp3man.txt)
  • Spot4 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/sp4man.txt)
  • Spot5 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/sp5man.txt)
  • Swot (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/swoman.txt)
  • Topex (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/topman.txt)
• Mass and gravity center initial values recommended by IDS (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/MassCoGInitialValues.txt)
• Mass and gravity center history:  description file
  • Cryosat-2 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/cs2mass.txt)
  • Envisat (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/en1mass.txt)
  • HY-2A (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/h2amass.txt)
  • HY-2C (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/h2cmass.txt)
  • HY-2D (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/h2dmass.txt)
  • Jason-1 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/ja1mass.txt)
  • Jason-2 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/ja2mass.txt)
  • Jason-3 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/ja3mass.txt)
  • Saral (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/srlmass.txt)
  • Sentinel-3A (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/s3amass.txt)
  • Sentinel-3B (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/s3bmass.txt)
  • Sentinel-6A (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/s6amass.txt)
  • Spot2 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/sp2mass.txt)
  • Spot3 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/sp3mass.txt)
  • Spot4 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/sp4mass.txt)
  • Spot5 (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/sp5mass.txt)
  • Swot (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/swomass.txt)
  • Topex (alt: ftp://ftp.ids-doris.org/pub/ids/satellites/topmass.txt)
• SAA corrective model: Jason-1

Laser Reflector Array offset (ILRS)

Table of coordinates and details for: 

• Cryosat-2
• Envisat
• HY-2 (other ILRS links hy-2a, hy-2c, hy-2d )
• Jason-1
• Jason-2
• Jason-3
• Saral
• Sentinel-3A
• Sentinel-3B
• Sentinel-6A
• Swot
• Topex

 

 

Ground segment

• Modelling of the ground beacons and ground antennas  
• Geometry and types of ground antenna 
  • Examples of the two types of antennas: Galapagos (Alcatel), Santa Cruz (Starec) 
• DORIS site standard configurations 
• System requirements for management of the DORIS station network  
• Station managment
• Interface specification between the DORIS network beacons and the onboard instrument (extract) 
• About DORIS stations equipment and impact on the frequency 
• Radio-frequency characteristics of the DORIS beacon  
• Frequency shift mode of the 3rd and 4th generation beacons    
• Recommendations on the phase laws implementation for types B and C
• Antenna phase laws in antex format  
  • see readme
  • for Alcatel ground antenna
  • for Starec ground antenna, types B and C

Characteristics of the DORIS sites

• Site logs
• SINEX master file : stations IDs (codes, DOMES), antenna type, eccentricity
• File of the station frequency shifts
• List of stations with external time and frequency references

Ties

• DORIS internal ties: vectors between different antennas on the same site
• DORIS ties with other IERS techniques: vectors from DORIS to co-located GNSS, SLR or VLBI since 1988.

Station events

• See the Table of the system events for: 
  • Chronology of the main events that occurred on the DORIS station network (new sites, new antennas, removed sites, failures...) with information on data gaps, invalidated data...
  • List of the Earthquakes with magnitude larger than 6 in the vicinity of DORIS sites (less than 500 km) - based on USGS Earthquake notifications 

More information 

• Colocated sites with GPS, SLR, VLBI and tide gauges: see Maps here
• About the DOMES Number the IERS/TRF station naming system. See the IDS FAQ
• Local surveys: some reports online on ITRF website

 

 

Observations

Technical documents

• About DORIS/RINEX format
• Description of CNES/SOD POE processing
• Description of the CNES/SOD preprocessing  for the DORIS data export formats (June 2002).
• Detailed standards of the successive CNES/SOD POD configurations defined for the Geophysical Data Records (GDRs) altimetry products and applied for the DORIS satellites :
  • GDR-B (2005) 
  • GDR-C (2008) 
  • GDR-D (2012) 
  • GDR-E (2015) (also named POE-E) 
  • POE-F (2018) 
  • POE-G (2025) 

 DORIS data export formats

• DORIS 1b (preprocessed  data)
  • DORIS 1.0 (before January 2002), 
  • DORIS 2.1
  • DORIS 2.2 (since June 2008)
• RINEX/DORIS (raw data) 

List of DORIS1b files available for satellite (correspondence table "cycle or arc" and "start date - end date"

• Cryosat-2 (mission in operation)
• Envisat 
• HY-2A 
• Jason-1
• Jason-2
• Saral (mission in operation)
• Spot2
• Spot3
• Spot4
• Spot5
• Topex

 

 

The products and their availability

• What kind of product and where to find them? See IDS data structure and formats
• Table of products
• Products of the Combination Center

Formats

• SINEX format: description; exemple
• Orbits: sp1 format, sp3 format, sp3c extended format; more details in NOAA Technical Report NOS 113 NGS 46 (full document  - 22 Mb, extract )
• Time series of the Earth Orientation Parameters (EOP) - eop format
• Time series of station coordinates - STCD format 
• Time series of coordinates of the TRF origin (geocenter) - geocenter format
• Ionosphere - iono format 

 

 

Analysis: some models

• Set of coordinates and velocities of all DORIS stations (extension of the ITRF for Precise Orbit Determination) available at CDDIS and IGN (ftp://doris.ign.fr/pub/doris/products/dpod/)
  • DPOD2020 (based on ITRF2020) - Produced by IDS Combination Center
  • DPOD2014 (based on ITRF2014) - Produced by IDS Combination Center
  • DPOD2008 (based on ITRF2008)
  • DPOD2005 (based on ITRF2005)
  • DPOD2000 (based on ITRF2000) 

• ITRF solutions: ITRF2020, ITRF2014, ITRF2008, ITRF2005, ITRF2000, and others 
• Earth Orientation Parameters at IERS EOP product center
• Ocean tide models FES (FES99, FES2004, FES2012, FES2014, FES2022)
• Gravity field: GRGS time variable models from GRACE/SLR (EIGEN-6S4 and others) and GFZ/GRGS EIGEN mean models at GRGS (e.g. CNES_GRGS.RL05MF_combined_GRACE_SLR_DORIS)
• Gravity field: GRACE websites at GFZ Potsdam and CSR Austin
• Drag temperature model: DTM-2020 (SWAMI project)
• Atmospheric density model: NRLMSIS 2.0 (model website)
• Local corrections: see IERS Global Geophysical Fluids Center (GGFC) Special Bureaus.
• Troposphere delay corrections from TU Wien

Technical documents

• IERS Conventions: reference systems and frames, astronomical and geophysical models (Conventions updates, Conventions 2010, Conventions 2003, ...)
• IDS recommendations for ITRF2004 : specific document for Combination Centers describing major DORIS-station related problems (November 2005) - Annexes