Accession Number : ADA288791

Title :   The Effects of the Environment on an Experimental VHF Radio Direction Finding Antenna System.

Descriptive Note : DREO rept.,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Read, William J.

PDF Url : ADA288791

Report Date : AUG 1994

Pagination or Media Count : 82

Abstract : This report discusses the results of VHF radio direction finding (DF) experiments carried out with an experimental linear eight antenna DF system. The main purpose of these experiments was to investigate the effect of the environment, in particular multipath propagation, on DF performance. A theoretical analysis of all known error mechanisms has also been carried out in order to better understand the measured results. This includes temporal noise, equipment errors, mutual coupling, and multipath. The analysis of multipath also includes the development of new models to predict statistical effects. The results of this investigation indicate that multipath effects are complex and may create difficulties in modern systems if improved accuracy is an objective. Further measurements will be required to verify these preliminary findings.

Descriptors :   *COMMUNICATION AND RADIO SYSTEMS, *RADIO DIRECTION FINDERS, COUPLING(INTERACTION), PROPAGATION, MODELS, THEORY, CANADA, STATISTICS, ACCURACY, ERRORS, RADIO EQUIPMENT, VERY HIGH FREQUENCY, MULTIPATH TRANSMISSION.

Subject Categories : Direction Finding
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE