Accession Number : ADA117909

Title :   Prototype Design and Initial Test Evaluation of a Global-Positioning-System Time-Transfer Receiver (GPS TTR).

Descriptive Note : Interim Rept.,


Personal Author(s) : Oaks,O Jay , Jr ; Frank,Alick H ; Falvey,Stanley R ; Lister,Mark J ; Buisson,James A

PDF Url : ADA117909

Report Date : 27 Jul 1982

Pagination or Media Count : 18

Abstract : Time-transfer equipment and techniques used with the NRL Navigation Technology Satellites have been modified and extended for use with the GPS satellites. A prototype receiver was built and field tested at NASA's Kennedy Spaceflight Center. The receiver uses the GPS L-band link at 1575 MHz with only the course-acquisition code to resolve a measured range to the satellite. A theoretical range is computed from the satellite ephemeris transmitted in the data message and the user's coordinates. Results of user offset from GPS time are obtained by differencing the measured and theoretical ranges and applying calibration corrections. (Author)

Descriptors :   *Receivers, *Global positioning system, *Navigation satellites, Transfer, Time, Synchronization(Electronics), Atomic clocks, Prototypes

Subject Categories : Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE