Accession Number:

AD0292076

Title:

AN APERTURE-SYNTHESIS METHOD OF MEASURING A MULTIPATH FIELD

Descriptive Note:

Corporate Author:

NATIONAL BUREAU OF STANDARDS BOULDER CO

Personal Author(s):

Report Date:

1962-10-12

Pagination or Media Count:

74.0

Abstract:

Field-strength meaurements made in the VHF-UHF portion of the spectrum often are ambiguous because of the prevalence of multipath propagation. The analysis of a method of making field-strength measurements in a multipath field from which it is possible to calculate the amplitude, polarization, relative time phase, and direction of arrival of each of the discrete multipath components is presented. The method is basically an aperture-synthesis technique which requires that the amplitude and phase of the signal from a moving dipole antenna be measured as the antenna is moved successively along three orthogonal straight-line paths. The parallel solutions are combined to provide the final solutions for each multipath component The amplitude and relative time phase of the horizontal electric field component, the amplitude and time phase of the vertical electric field component normal to the horizontal component and the direction of propagation, and the azimuthal and elevation angles of arrival. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE