A computer model for high-latitude phase scintillation based on wideband satellite data from Poker Flat

Details A computer model for high-latitude phase scintillation based on wideband satellite data from Poker Flat A computer model for high-latitude phase scintillation based on wideband satellite data from Poker Flat

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pdi..reptq....f&link_type=abstract

Final Report, 15 Aug. 1979 - 28 Feb. 1981 Physical Dynamics, Inc., Bellvue, WA.

Physics

Background Radiation, Broadband, Electromagnetic Wave Transmission, Ionospheric Noise, Scintillation, Very High Frequencies, Computerized Simulation, Mathematical Models, Plasmas (Physics), Radio Waves

Scientific paper

A mathematical model has been developed for describing plasma-density irregularities responsible for radiowave scintillation produced in the auroral ionosphere, and the model has been committed to an applications-oriented computer code, WBMOD. The model characterizes the three-dimensional configuration, gradient sharpness, and height-integrated strength of irregularities represented by a power-law spatial spectrum as functions of geomagnetic latitude, time of day, sunspot number, and planetary geomagnetic activity index. Program WBMOD permits calculation of the power-law index and spectral strength (at a fluctuation frequency of 1 Hz) of phase scintillation, together with scintillation indices (variances) for phase and intensity, using a phase-screen scattering theory. The model has been calibrated and iteratively tested against phase-scintillation data from the DNA Wideband Satellite Experiment, collected at Poker Flat, Alaska. It does not account for seasonal variations in high-latitude scintillation observed in other longitude sectors. The program contains a model for middle-latitude and equatorial irregularities as well as for auroral latitudes, but only the latter has been tested extensively against high-quality scintillation data.

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