Accession Number : ADA288558

Title :   An Improved Model of High-Latitude F-Region Scintillation (WBMOD Version 13).

Descriptive Note : Final rept. 1 Sep 93-31 Aug 94,

Corporate Author : NORTHWEST RESEARCH ASSOCIATES INC BELLEVUE WA

Personal Author(s) : Secan, James A. ; Bussey, Robert M.

PDF Url : ADA288558

Report Date : 31 AUG 1994

Pagination or Media Count : 93

Abstract : Many modern military systems used for communications, command and control, navigation, and surveillance depend on reliable and relatively noise-free transmission of radiowave signals through the earth's ionosphere. Small-scale irregularities in the ionospheric density can cause severe distortion, known as radiowave scintillation, of both the amplitude and phase of these signals. The WBMOD computer program can he used to estimate these effects on a wide range of systems. The objective of this study is to investigate improvements to the WBMOD model based on extensive data sets covering both the equatorial and high-latitude regimes. This report summarizes the work completed during the third year of this project, which includes completion of the new model for the high-latitude (auroral and polar cap) region of the WBMOD model.

Descriptors :   *COMPUTER PROGRAMS, *RADIO SIGNALS, *RADIO TRANSMISSION, *IONOSPHERIC SCINTILLATION, DATA BASES, COMMAND CONTROL COMMUNICATIONS, EQUATORIAL REGIONS, IONOSPHERE, DENSITY, NAVIGATION, COMMAND AND CONTROL SYSTEMS, AURORAE, NOISE REDUCTION, RANGE(EXTREMES), IONOSPHERIC MODELS, EARTH(PLANET), DISTORTION, F REGION, HIGH LATITUDES, POLAR CAP, RADIO WAVES.

Subject Categories : Computer Programming and Software
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE