PRECISE TIME FROM GPS FOR DEPARTMENT OF DEFENSE TEST AND TRAINING RANGES

James D. Luse, Stephen S. Sanford

Abstract:	ST AND TRAINING RANGES bv James D. Luse and Stephen S. Sanford Interstate Electronics Corporation Anaheim, California ABSTRACT: The Range Applications Program consists of instrumenting several Department of Defense test and training ranges with NAVSTAR Global Positioning System (GPS) receivers and other equipment to provide Time, Space, Position Information (TSPI) data. TSPI is used to evaluate performance of test vehicles and participants in training, exercises for Army, Navy, and Air Force Ranges. The instrumentation being provided derives time tags and time synchronization signals by tracking GPS satellites. The precision required of time outputs depends upon the application in which a specific equipment is to be used. Precision varies from a few nanoseconds to a few tenths of a microsecond. This paper outlines the scope of the Range Applications Program, particularly the application of its precise timing capabilities. Derivation of precise timing in the instrumentation being developed is addressed. It describes the various time outputs and their anticipated accuracies. Finally, applications of the time outputs of the RAP instrumentation are delineated. These applications include: precisely controlling Time Division Multiple Access (TDMA) for the data link equipment communicating TSPI data to the range evaluation centers; improving timing accuracy in Range Vernier Tracking Radars; and the precision time tagging of vehicle position and velocity data enabling the range evaluators to determine accurate Space Information for TSPI
Published in:	Proceedings of the 18th Annual Precise Time and Time Interval Systems and Applications Meeting December 2 - 4, 1986 DuPont Plaza Hotel Washington, DC
Pages:	305 - 319
Cite this article:	Luse, James D., Sanford, Stephen S., "PRECISE TIME FROM GPS FOR DEPARTMENT OF DEFENSE TEST AND TRAINING RANGES," Proceedings of the 18th Annual Precise Time and Time Interval Systems and Applications Meeting, Washington, DC, December 1986, pp. 305-319.
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