Accession Number : AD0724566

Title :   Development and Evaluation of a Double Sideband Doppler VOR System with High Level Reference Modulation.

Descriptive Note : Final rept. Nov 62-May 71,

Corporate Author : NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY NJ

Personal Author(s) : Willey, Virgil E.

Report Date : JUN 1971

Pagination or Media Count : 172

Abstract : The report describes the development and evaluation of an improved Doppler VOR System which will provide improvement of receiver compatibility with existing receiving equipment and reduction of station bearing error with some additional reduction of 'siting effects' and a reduction of counterpoise size. A new method of providing the 30 Hz amplitude modulation of the carrier, applicable to either the present Single Sideband or the Double Sideband Doppler VOR System for increased carrier power is also described. (Author)

Descriptors :   *RADIO NAVIGATION, DOPPLER NAVIGATION, RADIO EQUIPMENT, DOPPLER SYSTEMS, VERY HIGH FREQUENCY, MODULATION, ACCURACY.

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE