Calibration of a C-131 Aircraft as an HF Test Vehicle.
Abstract
This report describes a method of accurately calibrating an aircraft test vehicle by using an HF standard gain ground reference antenna whose design includes ground conductivity parameters. After calibration at its home base this vehicle can embark on a test mission to evaluate by means of radiation pattern measurements the absolute power gain characteristics of HF antenna installations. Analytical and experimental test programs were performed, with a C-131 aircraft and its associated wing-tip antennas calibrated as a transmitting 'unit,' thereby taking into account variations in antenna pattern performance resulting when the frequency of operation approaches the resonant frequency of the air frame. Based upon the extreme care and control with which flight test measurements were made, the absolute gain data obtained in this report is considered accurate within plus or minus 1.5 dB. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1970
- Accession Number
- AD0870220
Entities
People
- Edward J. Christopher
Organizations
- Rome Laboratory