STUDIES OF THE IONOSPHERE USING TRANSMISSIONS FROM ACTIVE SATELLITES.
Annual summary rept. no. 1, 1 Feb 64-31 Jan 66,
GHANA UNIV LEGON DEPT OF PHYSICS
Pagination or Media Count:
The theory of correlation analysis of fading records is reviewed and computer programs given for carrying out the analysis. Continuous observations over a period of 81 days of the 136 mcs signal radiated by Early Bird are described. Results include information on diurnal variation of total electron content, and new information on equatorial scintillation and the irregularities giving rise to it. The pattern on the ground was elongated by 60 - 1. The full correlation analysis of nearly 200 spaced receiver drift measurements made at Tamale, Ghana is presented. Drifts are westward by day, eastward by night, reversal occurring at about 07.30 and 20.00 GMT. A mid-morning maximum of about 200 msec. is a prominent feature in the F-region drift velocity. Mean F-Region drift velocity is 115 msec during the day, and 70 msec at night E-Region velocity is 67 msec by day. Correlation ellipses are elongated with axial ratios of about 6 - 1. The total electron content of the ionosphere is studied as determined from observations of the Faraday Rotation of 20 mcs signals radiated by S-66 over a period of 6 months. The diurnal variation of the electron content, and the development of the equatorial anomaly are shown. Refraction effects are shown to seriously affect 20 mcs results at even moderate zenith angles.
- Atmospheric Physics