Accession Number : AD0737212

Title :   Diurnal Phase Variation at 10.2 kHz.

Descriptive Note : Research and development rept.,

Corporate Author : NAVAL ELECTRONICS LAB CENTER SAN DIEGO CALIF

Personal Author(s) : Swanson,E. R. ; Bradford,W. R.

Report Date : 11 AUG 1971

Pagination or Media Count : 40

Abstract : Results of an empirical investigation of the diurnal phase variation of 10.2 kHz Omega signals are presented. Particular attention is paid to path defintion, including excitation regionas and spatial extent. Observed behavior is explained as the response of the ionosphere to incident solar radiation after consideration of characteristic but variable time constant. Anomalous electron production at sunrive, presumably due to photodeteachment, is shown to be important. (Author)

Descriptors :   (*IONOSPHERIC PROPAGATION, VERY LOW FREQUENCY), (*RADIOFREQUENCY INTERFERENCE, DIURNAL VARIATIONS), IONOSPHERIC DISTURBANCES, SOLAR FLARES, ELECTRON DENSITY

Subject Categories : Atmospheric Physics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE