NASA Home Page Goddard Space Flight Center Home Page
NASA Logo - Goddard Space Flight Center   + Visit NASA.gov
a directory of Earth science data and services Global Change Master Directory Web site
header 2 bullet Links bullet FAQ bullet Contact Us bullet Site Map
Home Data Sets Data Services Learn about GCMD_legacy's portal collaborations. Add new dataset or dataservice records to GCMD_legacy What's New Participate Calendar About GCMD_legacy
 
Record Search Query: ServiceParameters>DATA ANALYSIS AND VISUALIZATION>GLOBAL POSITIONING SYSTEMS

NASA Global Differential GPS (GDGPS) System
Entry ID: NASA_GDGPS

[ Update this Record ]

Summary
Abstract: Employing the largest global real-time tracking network, the Global Differential GPS (GDGPS) System tracks the GPS civil signals on the L1 and L2 frequencies. Highly redundant satellite coverage (25 fold, on average) ensures seamless and robust global coverage. The raw measurements are streamed via redundant communication paths to multiple GDGPS Operation Centers (GOC) (3 centers as of October ... View entire text
Related URL
Description: Applications of the NASA Global Differential GPS (GDGPS) System.
Service Citation
Originators: NASA JPL
Title: NASA Global Differential GPS (GDGPS) System
Provider: NASA JPL
URL: http://www.gdgps.net/
Service Keywords
DATA ANALYSIS AND VISUALIZATION >GLOBAL POSITIONING SYSTEMS Parameter Definition

Science Keywords
AGRICULTURE >AGRICULTURAL AQUATIC SCIENCES Parameter Definition
AGRICULTURE >AGRICULTURAL CHEMICALS Parameter Definition
View entire list
Quality QUALITY FACTORS

ANSI C for portability and maintainability.

Modularity. Highly modular code to support embedded as well as ground applications.

Reliability. Outstanding track record of continnuous operations.

Accuracy. All models are sub-cm accurate for the most demanding science applications.

Maintainability. Designed for operations by a third party and for team maintenance. Configuration control management.
Ancillary Keywords
Global Positioning System
Navigation
Differential Corrections
Real-Time Tracking Network

Service Provider
NASA/JPL/GDGPS > Global Differential GPS, Jet Propulsion Laboratory, NASA Supplemental Info
Service Organization URL: http://www.gdgps.net/

Service Provider Personnel
Name: YOAZ BAR-SEVER
Phone: 818-354-2665
Fax: 818-393-4965
Email: yoaz.e.bar-sever at nasa.gov
Contact Address:
Mail Stop 238-600
4800 Oak Grove Drive
City: Pasadena
Province or State: CA
Postal Code: 91109
Country: USA
Personnel
YOAZ BAR-SEVER
Role: TECHNICAL CONTACT
Phone: 818-354-2665
Fax: 818-393-4965
Email: yoaz.e.bar-sever at nasa.gov
Contact Address:
Mail Stop 238-600
4800 Oak Grove Drive
City: Pasadena
Province or State: CA
Postal Code: 91109
Country: USA
View entire list
Publications/References
Development of a Real-Time Single-Frequency Precise Point Positioning System and Test Results
Yang Gao and Kongzhe Chen
The University of Calgary
Describe the development of a real-time single-frequency PPP system
using the ireal-time GPS orbit and clock products from the JPL GDGPS System.
Report test results under road and marine conditions.
ION GNSS 2006, Fort ... View entire text
Creation and Review Dates
SERF Creation Date: 2009-06-16
SERF Last Revision Date: 2009-09-23
USA dot gov - The U.S. Government's Official Web Portal NASA
Webmaster:  Monica Holland
Responsible NASA Official:  Lola Olsen
Last Updated:  October 2014