NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The Role of the Consultative Committee on International Radio (CCIR) in Time and FrequencyThe Consultative Committee on International Radio (CCIR) is a technical advisory group that, within the International Telecommunications Union (ITU), provides formal recommendations, technical advice, and technical information related to the allocation and use of the radio spectrum. The CCIR does its work through a number of separate study groups, each of which deals primarily with one or more radio based services recognized by the ITU. One of these, Study Group 7, is called 'Science Services' and deals with, among other things, time and frequency services, and related topics. This part of CCIR is probably best known for its development and implementation of the UTC time system in 1972. The U.S. National Administration develops proposed recommendations and provides other technical input to the CCIR through an organization of U.S. Study Groups that parallel those functioning internationally. Both the private and government sectors participate actively under the general oversight of the U.S. State Department and its U.S. CCIR National Committee. Current and projected future activities of U.S. and international Study Group 7 are described, including some examples of current recommendations, handbooks, and other documentation that might be useful for working with time and frequency applications.
Document ID
19920024135
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Roger E. Beehler
(National Institute of Standards and Technology Gaithersburg, Maryland, United States)
Date Acquired
September 6, 2013
Publication Date
December 3, 1991
Publication Information
Publication: 23rd Annual Time and Time Precise Interval (PTTI) Applications and Planning Meeting
Publisher: National Aeronautics and Space Administration
Volume: 3159
Issue Publication Date: January 1, 1992
Subject Category
Communications And Radar
Meeting Information
Meeting: 23rd Annual Time and Time Precise Interval (PTTI) Applications and Planning Meeting
Location: Pasadena, CA
Country: US
Start Date: December 3, 1991
End Date: December 5, 1991
Sponsors: United States Naval Observatory, Goddard Space Flight Center, Jet Propulsion Lab
Accession Number
92N33379
Distribution Limits
Public
Copyright
Public Use Permitted.
No Preview Available