Accession Number:

ADA492256

Title:

Portable Clock Analyses

Descriptive Note:

Conference paper

Corporate Author:

NAVAL OBSERVATORY WASHINGTON DC

Personal Author(s):

Report Date:

1982-12-01

Pagination or Media Count:

5.0

Abstract:

The portable clock remains the most frequently used means of time dissemination and of calibration of precise clocks to the U.S. Naval Observatory Master Clock USNO MC. Because of this, portable clock trips and the factors that influence the confidence placed in the measurements obtained must be understood. In this paper, the general philosophy of trips and some of the error factors that can occur are discussed. The stability of individual USNO portable clocks is determined by analysis of pre- and post-trip measurements obtained through the USNO data Acquisition and Control System. Using these data, this paper explores their historical accuracy and determines error budgets. The feasibility of determining a statistical reliability factor based on the pre- and post-trip readings of an individual clock is also examined. From these studies the dependability and reliability of portable clock trips as a whole, may be concluded.

Subject Categories:

  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE