Accession Number:

AD0478312

Title:

FURTHER STUDIES OF ATMOSPHERIC ERRORS IN MICROWAVE AZIMUTH MEASUREMENTS,

Descriptive Note:

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:

1965-11-15

Pagination or Media Count:

61.0

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