Accession Number:

ADA413247

Title:

An Assessment of Precision Time and Time Interval Science and Technology

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL WASHINGTON DC NAVAL STUDIES BOARD

Personal Author(s):

Report Date:

2002-01-01

Pagination or Media Count:

85.0

Abstract:

Knowledge of time is essential to precise knowledge of location, and for this reason the Navy, with its need to navigate on the high seas, has historically played an important role in the development and application of advanced time realization and dissemination technologies. Discoveries coming from basic research funded by the Office of Naval Research ONR lie at the heart of todays highest performance atomic clocks. Naval Research Laboratory NRL expertise played a role in developing the space-qualified atomic clocks that enable the Global Positioning System GPS, and the U.S. Naval Observatory USNO maintains and disseminates the standard of time for all of the Department of Defense DOD. The Navy has made major investments in most aspects of precision time and time interval PTTI science and technology, although specific PTTI-related research has also been funded by the Defense Advanced Research Projects Agency DARPA and non-DOD agencies such as the National Science Foundation NSF, the National Aeronautics and Space Administration NASA, and the Department of Commerce Navy funding, largely through ONR, has a history of being an early enabler of key new developments Judicious funding decisions by the Navy particularly by ONR program officers-have underpinned most of the major advances in PTTI science and technology ST in the last 50 years Chapter 1 describes the Navys contributions to PTTI ST hereinafter referred to simply as PTTI in detail.

Subject Categories:

  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE