Status of the NAVSTAR Global Positioning System
PSAD-77-23
Published: Mar 02, 1977. Publicly Released: Mar 02, 1977.
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Highlights
The NAVSTAR Global Positioning System (GPS) is a space-based radio navigation system designed to provide users with worldwide three-dimensional position and velocity information. The system consists of three segments: (1) space satellites that transmit radio signals; (2) ground-based monitoring equipment; and (3) user equipment for a variety of service applications. Initial operational capability is planned for 1983.
Recommendations
Recommendations for Executive Action
| Agency Affected | Recommendation | Status |
|---|---|---|
| Department of Defense | The Secretary of Defense should: (1) review GPS to determine operational system performance required by users; (2) establish testing criteria for evaluating the adequacy of GPS development progress; and (3) assess the time allotted for the phase I test program. He should explore alternatives to the planned solicitation of contractor proposals before testing and determine the total cost for GPS development and related activities. |
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Topics
Air traffic control systemsGlobal positioning systemNavigation aidsProgram evaluationSatellitesSystems evaluationTelecommunications equipmentMilitary forcesCost estimatesField testing