Search Results
The search returned 1,237 publication(s) on its.ntia.gov.
A fully automated version of a model to predict relative received powers and bit error rates from microwave common carrier transmissions between e and er GHz is developed. Earlier computer programs that were not fully automated are discussed in the s...
This report describes the steps for designing experiments to quantify the performance of a communication satellite system according to the methods specified by ANS X3.l4l. Performance is described in terms of performance parameters that are user–orie...
The minimum amount of spectrum to satisfy worldwide broadcasting requirements in the high–frequency (HF) bands is estimated. This analysis provides technical bases for the U.S. allocation proposal$ being developed in preparations for the World Admini...
This report discusses a collection of microwave common carrier azimuthal antenna patterns. The patterns were digitized and stored into a uniformly formatted database. The primary application of this database is for interference prediction among commo...
This report describes an automated method of video quality assessment based on extraction and classification of features from sampled input and output video. The first subsystem of the automated video quality measurement system is the feature extract...
This report describes the results of an 18-month digital microwave radio performance and propagation measurement project that was conducted on a portion of the Defense Communications System in Germany. More than 6 gigabytes of data were collected...
This report describes the results of an 18-month digital microwave radio performance and propagation measurement project· that was conducted on a portion of the Defense Communications System in Germany. More than 6 gigabytes of data were collecte...
This report describes the results of an 18-month digital microwave radio performance and propagation measurement project that was conducted on a portion I of the Defense Communications System in Germany. More than 6 gigabytes of data were collect...
This manual describes the functions of the TRAMCON (TRAnsmission Monitor and CONtrol) On#8211;Line software and the steps necessary to maintain the software. This document emphasizes the software semantics rather than the syntax. The structure of the...
In order to determine how effective an erasure procedure is it is necessary to examine the detectability of the remaining signal in tape noise. This detectability can be measured by the probability of correct detection of the signal, which should be...
The geostationary Satellite Orbit Analysis Program (GSOAP) analyzes system performance and mutual interference of communication satellites using the geostationary satellite orbit. This manual presents information necessary to the user of GSOAP, Vers...
A summary is presented of a series of monitoring campaigns held between 1984 and 1989 to locate the sources of intentional harmful interference to the HF broadcast spectrum. The monitoring programs were organized under the auspices of the Internation...
Data from 21 ionospheric sounding stations in the northern and southern hemispheres were used to characterize the day to day variation in the critical frequency of the F2 layer of the ionosphere. Variability in the critical frequencies are analyzed m...
The Institute for Telecommunication Sciences (ITS) has performed a number of technical tasks as part of the responsibilities of the National Telecommunications and Information Administration (NTIA) for re–establishing the Pan-Pacific Educational and ...
This report provides a descriptive overview of the factors affecting the development of international value-added network services (IVANS). The paper first addresses terminology and describes the legal and regulatory environment in the United States...
This report presents a detailed assessment of the hydrologic and meteorological operations in the 162–174 MHz (VHF) and 406.1–420 MHz (UHF) bands. These operations are currently supported by hydrologic and quasi-hydrologic channel assignments in thes...
This report examines the potential for ground–based weather radar (meteorological radar) interference to digital microwave systems in the common carrier bands of 3700–4200 MHz and 5925–6425 MHz. Reported cases of interference to microwave common carr...
This technical report details a procedure for calculating the mainbeam off-axis power density in the near- and far-field of a parabolic circular reflector antenna. In the report, the on-axis procedures of an earlier report are extended to off-axis a...
This report is the second report in a series of reports which describe a new and unique approach for modeling either narrowband or wideband high frequency (HF) channels. Although narrowband models of the HF channel have existed for many years, they a...
This paper discusses the design and the measured performance of a 76.8-kIn (47.7-mi) over–water 2.3 GHz microwave radio link. Since one of the terminals was located on an ocean tower, the maximum antenna height at that location was restricted to 49 m...