This derived product set consists of Global Navigation Satellite System Ionosphere Vertical Total Electron Content (VTEC) comparison product (daily files) from the NASA Crustal Dynamics Data Information System (CDDIS). GNSS provide autonomous geo-spatial positioning with global coverage. GNSS 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). Since 2011, the CDDIS GNSS archive includes data from 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), which are similar to the U.S. GPS in terms of the satellite constellation, orbits, and signal structure. GNSS observations from a global network can be utilized for atmospheric measurements. Analysis Centers (ACs) of the International GNSS Service (IGS) retrieve GNSS data on regular schedules to produce independently computed VTEC maps. The IGS Ionosphere Analysis Center Coordinator (ACC) uses these individual AC solutions to generate the official IGS VTEC maps. The comparison product is used to compare the IGS and AC solutions of generated VTEC maps.
N: 90.0 S: -90.0 E: 180.0 W: -180.0
|Temporal Extent:||Platform(s):||Beidou, Galileo, GLONASS, GPS, GROUND STATIONS, QZSS, IRNSS, SBAS|
|Data Center(s):||NASA/GSFC/SED/ESD/GGL/CDDIS||Instrument(s):||Beidou P, Galileo P, GLONASS P, GPSP, GNSS, QZSS P, IRNSS P, SBAS P|
No citation information has been supplied for this collection. Please contact Earthdata Support to obtain proper citation information.
Derived products from GNSS data
|Project Short Name||Campaigns||Project Dates|
|IGS||No campaigns listed.||Start: 1992-01-01|
|Coverage Type||Zone Identifier||Geometry||Granule Representation|
There are no listed data contacts for this collection.
There is no archive and distribution information for this collection.
There is no direct distribution information for this collection.