Commandant
2100 Second St SW
United States Coast Guard
Washington, DC 20593-0001
Staff Symbol: G-OPN
Phone: (202) 267-6052
COMDTINST 16575.1
AUG 24 1999
COMMANDANT INSTRUCTION 16575.1
Subj: PROCESSING OF GLOBAL POSITIONING SYSTEM (GPS) INTERFERENCE TEST
REQUESTS
Ref: (a) Presidential Decision Directive NSTC-6, 28 March 1996, U.S. Global Positioning System
Policy
(b) Memorandum of Agreement Between the Department of Defense (DOD) and the
Department of Transportation (DOT), 8 Jan 1993, Civil Use of the Global Positioning
System
1.
PURPOSE. This Instruction supplements references (a) and (b). It provides specific guidance,
responsibilities and authority necessary to efficiently process DOD-sponsored GPS interference
test requests within the Coast Guard.
2.
ACTION. Area and district commanders and Commanding Officer of Coast Guard Navigation
Center (NAVCEN) shall ensure compliance with the provisions of this Instruction.
3.
DIRECTIVES AFFECTED. None.
4.
DISCUSSION.
a.
On a periodic basis DOD and selected other agencies, e.g., National Aeronautics and Space
Administration (NASA), conduct testing or other activities which may infringe on the GPS
frequency band. During the planning stages of these tests and activities, DOD has
committed to requesting approval of the testing from DOT in an attempt to reduce impacts
on civil GPS users.
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