Accession Number:

AD0766897

Title:

Test and Evaluation of a System for Precise Time-Dissemination Using DME (VORTAC) Synchronization.

Descriptive Note:

Final rept. Jul-Nov 72,

Corporate Author:

NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY NJ

Personal Author(s):

Report Date:

1973-08-01

Pagination or Media Count:

59.0

Abstract:

The report covers the test and evaluation of an experimental system designed to provide precise time to aircraft via a DME Distance Measuring equipment VORTAC ground station modified to use a cesium-beam atomic clock for a time base. Data acquired from a flight test at NAFEC demonstrated the feasibility of this time-dissemination concept for application in timefrequency collision avoidance systems. The standard deviation of time-dissemination error was found to be 0.47 microseconds. DME one-way ranging capability was also demonstrated, wherein ranging accuracy of a modified airborne DME operated one-way averaged 0.1-nmi difference over that of an unmodified airborne DME in conventional two-way operation. Author

Subject Categories:

  • Air Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE