CDDIS_DORIS_data_cycle

The Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) was developed by the Centre National d'Etudes Spatiales (CNES) with cooperation from other French government agencies. The system was developed to provide precise orbit determination and high accuracy location of ground beacons for point positioning. DORIS is a dual-frequency Doppler system that has been included as an experiment on various space missions such as TOPEX/Poseidon, SPOT-2, -3, -4, and -5, Envisat, and Jason satellites. Unlike many other navigation systems, DORIS is based on an uplink device. The receivers are on board the satellite with the transmitters are on the ground. This creates a centralized system in which the complete set of observations is downloaded by the satellite to the ground center, from where they are distributed after editing and processing. An accurate measurment is made of the Doppler shift on radiofrequency signals emitted by the ground beacons and received on the spacecraft.

Data and Resources

Field Value
accessLevel public
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier C1000000000-CDDIS
issued 2003-01-23
landingPage https://cmr.earthdata.nasa.gov:443/search/concepts/C1000000000-CDDIS.html
language {en-US}
metadata_type geospatial
modified 2025-03-31
old-spatial -180.0 -90.0 180.0 90.0
programCode {026:001}
publisher NASA/GSFC/SED/ESD/GGL/CDDIS
resource-type Dataset
source_datajson_identifier true
source_hash 2a5d6970955a1038cdfa15eaa9eb7c4639e6911538b4571db1b33ce089a8f3b0
source_schema_version 1.1
temporal 1990-03-31T00:00:00Z/2022-01-17T00:00:00Z
theme {IDS,geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • nasa
isopen False
license_id notspecified
license_title License not specified
maintainer undefined
maintainer_email support-cddis@earthdata.nasa.gov
metadata_created 2025-09-24T06:19:05.844702
metadata_modified 2025-09-24T06:19:05.844712
notes The Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) was developed by the Centre National d'Etudes Spatiales (CNES) with cooperation from other French government agencies. The system was developed to provide precise orbit determination and high accuracy location of ground beacons for point positioning. DORIS is a dual-frequency Doppler system that has been included as an experiment on various space missions such as TOPEX/Poseidon, SPOT-2, -3, -4, and -5, Envisat, and Jason satellites. Unlike many other navigation systems, DORIS is based on an uplink device. The receivers are on board the satellite with the transmitters are on the ground. This creates a centralized system in which the complete set of observations is downloaded by the satellite to the ground center, from where they are distributed after editing and processing. An accurate measurment is made of the Doppler shift on radiofrequency signals emitted by the ground beacons and received on the spacecraft.
num_resources 1
num_tags 9
title CDDIS_DORIS_data_cycle