Accession Number:

AD0711394

Title:

ACCURATE SECOND-ORDER THEORY FOR TRANSIONOSPHERIC PROPAGATION,

Descriptive Note:

Corporate Author:

LOWELL TECHNOLOGICAL INST RESEARCH FOUNDATION MASS

Personal Author(s):

Report Date:

1969-12-01

Pagination or Media Count:

174.0

Abstract:

Measurements on high frequency signals from beacon satellites are used for calculation of the ionospheric columnar electron content. An array of antennae and a complex receiving system were necessary to measure dispersive Doppler shift, Faraday rotation and ionospheric refraction simultaneously on three frequencies 20, 40 and 41MHz. Main emphasis is given to the development of a new second-order theory for phase path difference which considers, besides refraction and geomagnetic field effects, also the sphericity of the ionosphere. The correction terms caused by the sphericity dominate the second-order terms caused by the ray refraction. For several satellite passes the significance of the second-order effects is demonstrated. Author

Subject Categories:

  • Atmospheric Physics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE