Accession Number : ADP004586

Title :   International Time Transfer and Portable Clock Evaluation Using GPS (Global Positioning System) Timing Receivers: Preliminary Results,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION GREENBELT MD GODDARD SPACE FLIGHT CENTER

Personal Author(s) : Wardrip,S. C. ; Buisson,J. ; Oaks,O. J. ; Lister,M. ; Detoma,E.

Report Date : 02 APR 1984

Pagination or Media Count : 48

Abstract : The overall experiment was designed to test the positioning and navigation capabilities of the GPS timing receivers developed by the Naval Research Laboratory (NRL) for the NASA Goddard Laser Tracking Network (GLTN). To perform this experiment, a reliable and redundant time scale was set up onboard the ship, and a back-up on shore. This situation provided the opportunity to perform simultaneously a timing experiment ideally divided into two parts, the main objectives of the experimentation being: (1) To test GPS timing receiver synchronization capabilities on a moving platform, and to perform an intercontinental synchronization via GPS between participating international timing laboratories in Europe and in the United States. (2) To evaluate the performance of cesium portable clocks in the field.

Descriptors :   *RECEIVERS, *TIME, *CLOCKS, *GLOBAL POSITIONING SYSTEM, RUBIDIUM, CESIUM, PERFORMANCE TESTS, CHARTS, SHIPBOARD

Distribution Statement : APPROVED FOR PUBLIC RELEASE