THE DETERMINATION OF ANTENNA PARAMETERS BY THE USE OF EXTRATERRESTRIAL RADIO SOURCES.
Physical sciences research papers no. 357,
AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS
Pagination or Media Count:
In the last ten years, vast improvements in technology and instrumentation have allowed radio astronomy to go beyond the stage where its measurements were principally of interest to pure science astronomy, astrophysics, cosmology, etc. to a stage today where such measurements have important practical application in the fields of communications, radar, and antenna systems. This report covers the application of extraterrestrial radio sources, whose emission properties flux density, spectrum, celestial position, angular size, etc. have been firmly established by careful radio-astronomical observations, to the determination of antenna parameters. The extraterrestrial radio sources whose properties are presented are the sun, the moon, and the strong discrete celestial radio sources. The areas of application discussed in detail are the determination of antenna gain, effective area, and aperture efficiency and the measurement of the power pattern of an antenna. Another application briefly discussed is the measurement of effective radiated power from satellites. Author