Accession Number : ADA139896

Title :   H. F. Frequency Management by Frequency Sharing as Assisted by Models Updated in Real-Time.

Descriptive Note : Final rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Uffelman,D R ; Harnish,L O ; Goodman,J M

PDF Url : ADA139896

Report Date : 21 Mar 1984

Pagination or Media Count : 25

Abstract : Frequency management systems for the high frequencies (HF) currently in use by the U.S. Department of Defense (DoD) rely heavily on manual selection of frequencies which have been allocated on a circuit by circuit basis. There is no capability to anticipate frequency changes (QSY's) in advance in a manner such that a frequency being released by one user can be utilized effectively and immediately by a second user. NRL has been examining a scheme by which a small computer of the HF channel can be made to perform very accurately to anticipate channel characteristics in a short term prediction mode. It is proposed that this model be utilized to provide automated frequency management which would allow one to anticipate frequency availability and thereby allow sharing of frequencies between several users (frequency pooling). Utilizing data obtained from an oblique sounder net on the East Coast of the United States, this report suggests a method by which this may be accomplished. (Author)

Descriptors :   *Frequency allocation, *Management planning and control, Ionospheric models, Ionospheric propagation, High frequency, Channel selectors, Real time

Subject Categories : Administration and Management
      Radiofrequency Wave Propagation
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE