Publications

This report documents the results of a special measurement task at the Naval Air Test Center, Patuxent River, Maryland. In documenting the spectrum usage for land mobile, radar and microwave systems at an active military base, the report serves as a reference for future improvements to spectrum management techniques and procedures.

This report documents a spectrum resource assessment of the bands allocated to the Federal Government fixed service above 400 MHz on a primary basis. The assessment identifies allocations, standards, channeling plans and technological trends pertaining to the Federal fixed service. Technical and policy issues are discussed as part of NTIA's long-range planning effort.

This technical memorandum discusses simplified procedures for calculating near field and far field intensities of several types of aperture and wire antennas.

This report documents an analysis of the probability of interference from systems in the space services to aeronautical telemetry system using the 2200-2290 MHz band. These calculated results may be used to determine the coordination requirements for compatible operation between these systems, if a relaxation in the power flux density limits is adopted.

This technical memorandum provides additional guidance in applying procedures for finding the near field power density.  The technical memorandum also examines the feasibility of using simple models to calculate the off-axis near-field power density of wire and aperture antennas.

This report describes the use of space services by the U.S. Government in support of NTIA's Long Range Plan for Management and Use of the Radio Spectrum. The report addresses national and international regulations as well as frequency allocations, current and future government use of the space services, and spectrum management issues.

This study examined the sharing of spectrum between analog and digital land mobile radios in the 162-174 MHz band. Recommendations regarding cochannel and adjacent channel coordination distances have been adopted.

This report describes a new technique for calculating the spectrum space used by existing frequency assignments.  The Spectrum Use Model (SUM) determines the amount of spectrum used at a given location or the probability that a given location is unavailable for a new assignment.

This report describes analysis models and software packages developed for the assessment of single-entry and aggregate interference from terrestrial emitters into terrestrial or airborne victim receivers. The menu-drive computer programs provide user options for input/output computations, parametric representations, propagations models and emitter distributions. The flexibility in the scenario creation, parameter selection, and computation mode, renders the models applicable to a wide variety of EMC assessments and conditions. Model descriptions, technical formulations, user manuals, and sample runs are provided in this report.