Search Results
The search returned 1,237 publication(s) on its.ntia.gov.
An expression for the gain of a curtain array antenna over a perfectly conducting, flat Earth with no mutual impedance between elements is derived in this report. A FORTRAN computer subroutine created to calculate the expression is described here. Th...
This report documents the learning experience of a group of Federal-agency planners who face upgrading or augmenting existing on-premises communication systems and building wiring. In July 1984, an interagency Fiber Optics Task Group was formed under...
This is the third in a series of reports describing the results of studies to determine the location of sources of harmful interference to the HF broadcasting service. Using observations recorded during the June 1986 monitoring program conducted unde...
The objective of this study is to look at fiber optics networks in a predominately functional domain and to assess their potential survivability advantages from that point of view. As a consequence, service survivability is emphasized far more than p...
This report examines the trade and related effects of possible changes in the 1982 AT&T consent decree.
Before 1987 no commercial trunking systems were available in any Government or non-Government band below 800 MHz. This study examines the application of trunking to the Government band 406–420 MHz. As a result of this study and subsequent discussion...
A general model of received signal variability is outlined in which the signal level is represented as a simple algebraic combination of random functions which, in turn, vary with time, location, and the "situation." A study of signal variability sho...
NTIA gathered revenue and market data from the Bell Operating Companies (“BOCs”), their competitors, long distance telephone carriers and large communications user groups. From this database some useful conclusions are drawm about the characteristic...
American National Standard (ANS) X3.100 will be adopted as Federal Information Processing Standards Publication (FIPS PUB) 100 and Federal Standard (FED STD) 1041. These standards are based on CCITT Recommendation X.25 and ISO Standards 7776 and 8208...
This report presents an updated and improved noise model designed for use in the HF propagation prediction program, IONCAP. The model has, however, much more general applicability, since the frequency range 10 kHz to 30 MHz is covered. The report giv...
The Institute for Telecommunication Sciences (ITS) is the research and engineering laboratory of the National Telecommunications and Information Administration (NTIA) of the U.S. Department of Commerce (DOC). ITS provides technical support to NTIA in...
An automated analysis model is presented for the prediction of system performance of communication circuits that use the ground wave as the primary mode of propagation. The computer program Ground Wave Automated Performance Analysis (GWAPA) is a user...
The Federal Telecommunications Standards Committee, chaired by the Office of the Manager, National Communications System, has established a Fiber Optics Task Group, one purpose of which is to develop guidelines for Federal agencies planning to use fi...
This report presents a bibliography, categorized by region, of some recent work on the high-latitude ionosphere. It contains a brief introduction to the characteristics of the ionosphere at high latitudes, and a synopsis of a few articles. The appro...
The possibility of allowing shipborne navigation radars within the 9300–9320 MHz band is being considered within Study Group 8 of the International Radio Consultative Committee (CCIR) and within the United States preparation for the 1987 Mobile World...
A method of interpolation that accurately interpolates data values that satisfy a function is said to have the accuracy of that function. The desired or required properties for a univariate interpolation method are reviewed, and the accuracy of a thi...
Prediction of propagation effects (i.e., path attenuation, phase delay, ray bending and medium noise) over the 1 to 300 GHz frequency range through the clear, nonturbulent atmosphere is accomplished by combining a spectroscopic data base with a compu...
This is the second in a series of reports describing the results of studies to determine the location of sources of harmful interference to the HF broadcasting services. Using observations recorded during the January 1986 monitoring program conducted...