Accession Number : AD0840706

Title :   COMPUTATIONS OF VLF FIELDS FOR DETERMINATION OF ELECTRON DENSITY PROFILES USING OBLIQUE SOUNDER DATA,

Corporate Author : NAVAL WEAPONS CENTER CORONA LABS CA

Personal Author(s) : Hildebrand, Verne E. ; Morfitt, David G.

Report Date : OCT 1968

Pagination or Media Count : 71

Abstract : Electric field strength levels have been recorded by a VLF multiple-frequency oblique-incidence ionospheric sounder over a low latitude path from Hawaii to Southern California. These field strength values are compared with predicted fields obtained from a mathematical propagation mode, in order to investigate the propagation characteristics of various electron density profiles representative of the D-region of the ionosphere. A procedure for determining a 'best-fit' profile to the sounder data is demonstrated and the uniqueness of this profile is discussed. (Author)

Descriptors :   (*RADIO SIGNALS, IONOSPHERIC PROPAGATION), (*IONOSPHERIC PROPAGATION, SOUNDING ROCKETS), ATMOSPHERIC SOUNDING, ELECTRIC FIELDS, MATHEMATICAL MODELS, PREDICTIONS, ELECTRON DENSITY, CURVE FITTING.

Subject Categories : Radiofrequency Wave Propagation
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE