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

ISO-19139 Metadata

Metadata Information

Metadata language: eng

Metadata character set: utf8

Last update: 2012-02-08

Metadata contact:

Role: pointOfContact

Individual's name: Matthew Tisdale

Organization's name: HIFLD WG

Contact information:

Phone:

Voice: 757-459-4344

Address:

Delivery point: 5800 Lake Wright Drive

City: Norfolk

Administrative area: VA

Postal code: 23502

e-mail address: tisdale_matthew@bah.com

Scope of the data described by the metadata: dataset

Name of the metadata standard used: NAP - Metadata

Version of the metadata standard: 1.2

Metadata identifier: 1501091405730r048140159088606804

Data Identification Information

Resource citation:

Title: U.S. Coast Guard (USCG) Maritime Differential GPS (DGPS) Locations

Date:

Reference date - publication: 2008-04-01

Presentation format: mapDigital

Cited responsible party:

Role: originator

Organization's name: USCG

Contact information:

Descriptive keywords:

Theme keywords:

Keywords: Differential GPS, USCG, GPS, USCG Differential GPS

Descriptive keywords:

Keyword type not provided

Keywords: Offline Data

Keyword thesaurus:

Citation reference: 723f6998-058e-11dc-8314-0800200c9a66

Abstract: 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 to GPS-derived positions. The Coast Guard DGPS Service provides 10-meter accuracy in all established coverage areas. Typically, the position error of a DGPS position is 1 to 3 meters, greatly enhancing harbor entrance and approach navigation. The System provides service for coastal coverage of the continental U.S., the Great Lakes, Puerto Rico, portions of Alaska, Hawaii, and a large part of the Mississippi River Basin. Many foreign nations are implementing standard DGPS services modeled after the U.S. Coast Guard?s system to improve maritime safety in their critical waterways. The Coast Guard's maritime Differential Global Positioning Service achieved Full Operational Capability (FOC) on 15 March 1999 as announced in the DOT press release. The maritime DGPS service provides 10 meter (2 dRMS) navigation accuracy, integrity alarms for GPS and DGPS out-of-tolerance conditions within 10 seconds of detection, availability of 99.7% per month, coastal coverage to the continental United States, the Great Lakes, Puerto Rico/US Virgin Islands, and selected portions of Alaska and Hawaii. The achievement of FOC culminates a six-year effort to convert existing radiobeacon sites and construct new sites to transmit DGPS corrections. Several equipment upgrades were installed to improve system performance. During the procurement and installation phases of the system upgrades, the maritime DGPS service operated under Initial Operational Capability rules, where the signals provided accurate corrections with integrity to the maximum extent possible.

Purpose: 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 (HLS/HD) Community.

Dataset language:eng

Dataset character set: utf8

Status: completed

Resource maintenance:

Update frequency: asNeeded

Resource constraints:

General constraints:

Limitations of use: None (Public Use)

Resource constraints:

Legal constraints:

Other constraints: None (Public Domain Information)

Spatial representation type: vector

Processing environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000

Resource extent:

Extent description: publication date

Geographic element:

Bounding rectangle:

West longitude: -173.08349418999333

East longitude: -47.89418169000138

North latitude: 75.32815423240804

South latitude: 3.328776797118824

Resource extent:

Geographic element:

Bounding rectangle:

West longitude: -162.707139

East longitude: -67.066959

North latitude: 61.056259

South latitude: 4.518351

Resource point of contact:

Role: pointOfContact

Individual's name: Andy Freckmann

Organization's name: DHS OCIO/GMO

Contact information:

Phone:

Voice: 202-447-3730

Address:

e-mail address: ANDREW.H.FRECKMANN@saic.com

Spatial Representation

Vector Data

Geometric objects:

Object count: 86