Accession Number : AD0711394

Title :   ACCURATE SECOND-ORDER THEORY FOR TRANSIONOSPHERIC PROPAGATION,

Corporate Author : LOWELL TECHNOLOGICAL INST RESEARCH FOUNDATION MASS

Personal Author(s) : Reinisch,Bodo W.

Report Date : DEC 1969

Pagination or Media Count : 174

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)

Descriptors :   (*IONOSPHERE, *ELECTRON DENSITY), (*RADIO WAVES, IONOSPHERIC PROPAGATION), DOPPLER EFFECT, MAGNETOOPTICS, REFRACTION, SCIENTIFIC SATELLITES, IONIZATION, TEST METHODS

Subject Categories : Atmospheric Physics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE