Effects of Ionospheric Scattering on Very-Long-Distance Radio Communication

Front Matter....Pages i-viii
Introduction....Pages 1-3
Ionospheric Propagation in the Ideal Case....Pages 5-7
Measurements on a Short Path....Pages 9-17
Measurement of Angle-of-Arrival....Pages 19-30
Spherical Earth Propagation — The Idealized Case....Pages 31-34
Regular Deviations from Great Circle Paths....Pages 35-36
Random Deviations from Great Circle Paths....Pages 37-55
Presence of an Absorbing Region....Pages 57-63
Location of the Absorbing Parts of the Auroral Regions....Pages 65-68
Seasonal Variations in Direction of Arrival....Pages 69-78
Sudden Bearing Changes....Pages 79-80
Variations of Elevation Angle....Pages 81-87
The Short-Term Characteristics of the Received Wave (Scintillations)....Pages 89-99
Relations Between the Bearing and the Amplitude....Pages 101-118
Relations Between the Bearing and Elevation Angle....Pages 119-124
The Coherence Ratio....Pages 125-141
The Antipodal Area When the Ionosphere is Smooth....Pages 143-147
Angular Spread of Waves....Pages 149-156
The Antipodal Area with a Rough or Absorbing Ionosphere....Pages 157-165
Duct Propagation....Pages 167-172
Conclusion....Pages 173-174
Back Matter....Pages 175-179