CDDIS_GNSS_realtime_data_1

Ground-Based Global Navigation Satellite System Data (1-second sampling, real-time streams) from NASA CDDIS

Version 1 eng NRT
  • Abstract
    Global Navigation Satellite System (GNSS) real-time 1 to multi-second sampled data available from the Crustal Dynamics Data Information System (CDDIS). Global Navigation Satellite System (GNSS) provide autonomous geo-spatial positioning with global coverage. GNSS real-time data sets from ground receivers at the CDDIS consist primarily of the data from the U.S. Global Positioning System (GPS) and the Russian GLObal NAvigation Satellite System (GLONASS). Other GNSS (Europe’s Galileo, China’s Beidou, Japan’s Quasi-Zenith Satellite System/QZSS, the Indian Regional Navigation Satellite System/IRNSS, and worldwide Satellite Based Augmentation Systems/SBASs) are similar to the U.S. GPS in terms of the satellite constellation, orbits, and signal structure; CDDIS began streaming real-time data from these systems in 2015. The real-time observation data from a global permanent network of ground-based receivers are transmitted from the CDDIS in 1 to multi-second intervals in raw receiver or RTCM (Radio Technical Commission for Maritime Services) format.
  • Purpose
    The receivers collect the signals from orbiting satellites to determine their location in three dimensions and calculate precise time. GNSS receivers detect, decode, and process both pseudorange (code) and phase transmitted by the GNSS satellites. The satellites transmit the ranging codes on two radio-frequency carriers, allowing the locations of GNSS receivers to be determined with varying degrees of accuracy, depending on the receiver and post-processing of the data.

Data Identification Fields:

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    Data Dates
    Creation
    Processing Level

    Level 1

    Quality
    Collection Progress

    In Work

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • SOLID EARTH
    • GEODETICS
    • COORDINATE REFERENCE SYSTEM
    • COUNTRY/REGIONAL COORDINATE REFERENCE SYSTEM
    • EARTH SCIENCE
    • SOLID EARTH
    • GEODETICS
    • COORDINATE REFERENCE SYSTEM
    • GLOBAL COORDINATE REFERENCE SYSTEM
    • EARTH SCIENCE
    • SOLID EARTH
    • GEODETICS
    • ELLIPSOID CHARACTERISTICS
    • EARTH SCIENCE
    • SOLID EARTH
    • GEODETICS
    • GEOID CHARACTERISTICS
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • CONTROL SURVEYS
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • GRAVITY
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • POLAR MOTION
    • ANNUAL ELLIPTICAL COMPONENT
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • POLAR MOTION
    • CHANDLER CIRCULAR COMPONENT
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • ROTATIONAL MOTION/VARIATIONS
    • ROTATIONAL RATE/SPEED
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • SATELLITE ORBITS/REVOLUTION
    • ANGLE OF ELEVATION
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • SATELLITE ORBITS/REVOLUTION
    • ANGLE OF INCLINATION
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • SATELLITE ORBITS/REVOLUTION
    • ORBIT TYPE
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • SATELLITE ORBITS/REVOLUTION
    • ORBIT VELOCITY
    • EARTH SCIENCE
    • SOLID EARTH
    • GRAVITY/GRAVITATIONAL FIELD
    • SATELLITE ORBITS/REVOLUTION
    • ORBITAL POSITION
    • EARTH SCIENCE
    • SOLID EARTH
    • TECTONICS
    • EARTHQUAKES
    • EARTHQUAKE MAGNITUDE/INTENSITY
    • EARTH SCIENCE
    • SOLID EARTH
    • TECTONICS
    • PLATE TECTONICS
    • CRUSTAL MOTION
    • CRUSTAL MOTION DIRECTION
    • EARTH SCIENCE
    • SOLID EARTH
    • TECTONICS
    • PLATE TECTONICS
    • CRUSTAL MOTION
    • CRUSTAL MOTION RATE
    • EARTH SCIENCE
    • SOLID EARTH
    • TECTONICS
    • PLATE TECTONICS
    • FAULT MOVEMENT
    • FAULT MOVEMENT DIRECTION
    • EARTH SCIENCE
    • SOLID EARTH
    • TECTONICS
    • PLATE TECTONICS
    • FAULT MOVEMENT
    • FAULT MOVEMENT RATE
    • EARTH SCIENCE
    • SOLID EARTH
    • TECTONICS
    • PLATE TECTONICS
    • PLATE BOUNDARIES
    • EARTH SCIENCE
    • SOLID EARTH
    • TECTONICS
    • PLATE TECTONICS
    • STRAIN

Acquisition Information Fields:

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Platforms
  • Earth Observation Satellites
    BEIDOU
    Instruments
    • BEIDOU ANTENNA
  • Earth Observation Satellites
    GALILEO
    Instruments
    • GALILEO ANTENNA
  • Earth Observation Satellites
    GLONASS
    Instruments
    • GLONASS ANTENNA
  • Earth Observation Satellites
    GPS
    Instruments
    • GPS ANTENNA
  • In Situ Land-based Platforms
    GROUND STATIONS
    Instruments
    • GNSS RECEIVER
  • Earth Observation Satellites
    QZSS
    Instruments
    • QZSS ANTENNA
  • Earth Observation Satellites
    IRNSS
    Instruments
    • IRNSS ANTENAA
Projects
Project Short Name Campaigns Project Dates
IGS No campaigns listed. 1992-01-01

Temporal Information Fields:

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Temporal Keywords
  • 1 second - < 1 minute

Spatial Information Fields:

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Location Keywords
    • GEOGRAPHIC REGION
    • GLOBAL

Data Centers

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  • NASA/GSFC/SSED/CDDIS
    ARCHIVER
    Crustal Dynamics Data Information System, Solar System Exploration Division, Goddard Space Flight Center, NASA

    NASA GSFC
    Code 690.1
    Greenbelt, Maryland 20771

    Home page for the CDDIS website


    • Home Page

Data Contacts

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  • Carey
    Technical Contact
    Carey Noll

    NASA GSFC
    Code 690
    Greenbelt, Maryland 20771

Collection Citations Fields:

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