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An evaluation of hf ionospheric backscatter echoes. Technical information series

Technical Report ·
OSTI ID:7340354
The characteristics of hf radar echoes reflected from ionization irregularities aligned along the lines of force of the earth's magnetic field are discussed. The spatial-geographical extent of ionospheric backscatter echoes is estimated for an hf radar located in the midlatitudes with the antenna beam oriented toward the polar region. Utilizing experimental radar-ionospheric data acquired at frequencies between hf and uhf, an analysis is made of the amplitude and the cross-sectional area statistics of hf field-aligned echoes. The Doppler frequency variation, the frequency of occurrence, and the diurnal and seasonal variation of ionospheric backscatter echoes and their correlation with solar geophysical conditions are also discussed. (auth)
Research Organization:
General Electric Co., Syracuse, N.Y. (USA). Heavy Military Equipment Dept.
OSTI ID:
7340354
Report Number(s):
AD-A-018229; R-75EMH19
Country of Publication:
United States
Language:
English