Commandant
2100 Second St. SW
United States Coast Guard
United States
Washington, DC 20593-0001
Coast Guard
Staff Symbol: G-NRN
Phone: (202)267-0297
COMDTINST 16577.2
AUG 16 1995
COMMANDANT INSTRUCTION 16577.2
Subj: DIFFERENTIAL GLOBAL POSITIONING SYSTEM (DGPS) NAVIGATION SERVICE
CONCEPT OF OPERATIONS
A. PURPOSE. To distribute the DGPS Navigation Service Concept of Operations.
B. ACTION. Area and district commanders, commanders of maintenance and logistics
commands, and unit commanding officers shall ensure that the DGPS Navigation Services
Concept of Operations receives appropriate distribution.
C. BACKGROUND. DGPS is an enhancement of the U.S. Department of Defense's Global
Positioning System (GPS). A network of ground based reference stations provides corrections
to the GPS satellite ranging measurements, to provide a navigation accuracy of 8-20 meters in
real time. The three specific objectives of this Concept of Operations are: (1) to provide a
framework to include operations, logistics, and maintenance of the DGPS service, (2) to
identify changes that must be made to the existing radiobeacon support infrastructure, and (3)
to be the U.S. Coast Guard organizational document that identifies internal support
responsibility assignments. The Concept of Operations, coupled with electronic equipment
support plans will begin the recurring budget process to provide future funds for the DGPS
service life-cycle maintenance costs.
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