HIFLD OPEN U.S. Coast Guard (USCG) Maritime Differential GPS (DGPS) Locations

Principal Investigator(s):  View help for Principal Investigator(s) U.S. Coast Guard; USCG Navigation Center; United States Department of Homeland Security

Version:  View help for Version V1

Name File Type Size Last Modified
us-coast-guard-uscg-maritime-dgps-locations:.zip application/zip 46.2 KB 12/04/2025 01:43:AM

Project Citation: 

U.S. Coast Guard, USCG Navigation Center, and United States Department of Homeland Security. HIFLD OPEN U.S. Coast Guard (USCG) Maritime Differential GPS (DGPS) Locations. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2025-12-04. https://doi.org/10.3886/E240943V1

Project Description

Project Title:  View help for Project Title HIFLD OPEN U.S. Coast Guard (USCG) Maritime Differential GPS (DGPS) Locations
Summary:  View help for Summary NAVCEN operates the Coast Guard Maritime Differential GPS (DGPS) Service and the developing Nationwide DGPS Service (NDGPS), consisting of two control centers and 86 remote broadcast sites. The service broadcasts correction signals on marine radiobeacon frequencies to improve the accuracy and integrity of GPS-derived positions. DGPS provides 10-meter accuracy in all established coverage areas, typically achieving 1–3 meter positional accuracy. Coverage includes the coastal United States, the Great Lakes, Puerto Rico, portions of Alaska and Hawaii, and much of the Mississippi River Basin. The maritime DGPS system achieved Full Operational Capability on March 15, 1999, following a multi-year effort to upgrade and expand broadcast sites. This dataset was created for incorporation into the National Geospatial-Intelligence Agency (NGA) 2008 Homeland Security Infrastructure Program (HSIP) Gold data inventory release to the Federal Interagency Homeland Security and Homeland Defense Community.The system provides integrity alarms, high availability, and enhanced accuracy to support maritime navigation.
Original Distribution URL:  View help for Original Distribution URL https://hifld-geoplatform.hub.arcgis.com/

Scope of Project

Subject Terms:  View help for Subject Terms HIFLD Open; GIS; Differential GPS; Navigation
Geographic Coverage:  View help for Geographic Coverage United States
Time Period(s):  View help for Time Period(s) 4/1/2008 – 4/1/2008
Data Type(s):  View help for Data Type(s) geographic information system (GIS) data
Collection Notes:  View help for Collection Notes Archived from the HIFLD Open GIS data repository, which was deactivated on August 26, 2025.


Related Publications

Download this project

Published Versions

V1 [2025-12-04]

Export Metadata

Dublin Core

DDI 2.5

Report a Problem

Found a serious problem with the data, such as disclosure risk or copyrighted content? Let us know.

This material is distributed exactly as received from the data depositor. ICPSR has not reviewed, checked, or processed this material. For additional information about the study, please contact the investigator(s) directly. If you have questions about the accessibility of materials distributed by ICPSR or require further assistance, please visit ICPSR's Accessibility Center.