Accession Number : ADP009115

Title :   Some Applications of GPS Timing Information,

Corporate Author : BEIJING UNIV (CHINA)

Personal Author(s) : Zhang, Yinbai

Report Date : 02 DEC 1993

Pagination or Media Count : 9

Abstract : GPS Satellites transmit two independent signals. One is C / A code (course acquisition signal) could be utilized by all civilian users. This service is called as Standard Positioning Service (SPS). Another is P code (precise signal) that could be only accessed by those authorized users. The service is called as precise positioning service (PPS). SPS C / A code users can navigate with accuracy of approximately 100m and timing accuracy of about 250-300 ns (I sigma). Such timing accuracy is not enough for precision time and frequency value transfer. For this reason we must do some research work to improve the SPS C / A code accuracy which SPS users can get. This paper presents our recently progress on timing information analysis, its data processing and its timing and frequency measurement applications.

Descriptors :   *GLOBAL POSITIONING SYSTEM, *NAVIGATION SATELLITES, ACCURACY, ACQUISITION, DATA PROCESSING, MEASUREMENT, PRECISION, STANDARDS, TIME, TRANSFER, RADIO LINKS, CODING, RADIO SIGNALS, SIGNAL PROCESSING, CHINA.

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE