Accession Number : AD0478312


Title :   FURTHER STUDIES OF ATMOSPHERIC ERRORS IN MICROWAVE AZIMUTH MEASUREMENTS,


Corporate Author : CENTRAL RADIO PROPAGATION LAB NATIONAL BUREAU OF STANDARDS BOULDER COLO


Personal Author(s) : Thompson,M C ,Jr ; Janes ,H B ; Smith,D


Report Date : 15 Nov 1965


Pagination or Media Count : 61


Abstract : Results of four experiments are presented in a further study of errors contributed by the atmosphere in azimuth angle measurements made with short-baseline microwave systems. Time variations in the azimuth of a fixed target were found to decrease with increasing radio frequency in the range of 9.4 to 35-GHz. Ground multipath is indicated as the principal source of these variations which are characterized, especially at the lower frequencies, by long-term trends and lack of correlation on adjacent paths. (Author)


Descriptors :   *AZIMUTH , *DIRECTION FINDING , *MICROWAVE EQUIPMENT , MEASUREMENT , ERRORS , TROPOSPHERE , INTERFERENCE , FEASIBILITY STUDIES , RADIOFREQUENCY , PARABOLIC ANTENNAS , K BAND , X BAND , THEODOLITES , SIGNALS , ATTENUATION , METEOROLOGICAL PHENOMENA , INSTRUMENTATION , PHASE LOCKED SYSTEMS , KLYSTRONS , NARROWBAND , AMPLIFIERS , TELEMETER SYSTEMS , FREQUENCY , MODULATION , INTERMEDIATE FREQUENCIES , HAWAII , ATMOSPHERIC TEMPERATURE , PRESSURE


Subject Categories : Direction Finding


Distribution Statement : APPROVED FOR PUBLIC RELEASE