Digital Equipment Susceptibility.
Abstract
This report presents the results of the first quarter effort of a 22-month investigation into the measurement procedures and techniques for electromagnetic susceptibility testing of digital receiving equipments. The activity period covered by this report is from 1 September 1970 to 30 November 1970. The major effort of the quarter has been the literature survey. The survey determined the digital techniques representative of military equipments; the interference sources, structures, and levels indigenous to the equipment; and noted type and depth of interference analysis of digital equipments. The report discusses the encoding and modulation techniques, and the transmission structure of both formatted message systems and trunking systems. The typical military environment of a U.S. Army Division Main Headquarters and Signal Battalion is presented. Characteristics and intensities of man-made and natural noise are briefly discussed as is the depth and appropriateness of previous analyses located during the survey. It is concluded that FSK and 4-phase DPSK modulation and decoding structures should be selected for modeling, analyzing, and simulating the manifestations of interference, typical of a military environment, upon digital receiving equipment in the subsequent phases of this effort. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1971
- Accession Number
- AD0881254
Entities
People
- Denmer Dix Baxter
Organizations
- Martin Marietta