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Ground reflection points in multihop propagation
U Photographs of pulses received at San Diego
Scattering of energy at the earths surface
4 other sections not shown
300 microsecond delayed 3000 kilometers 53 milliseconds 60 degrees south angles application of scatter Back-scatter base is 53 Beltsville Beltsville-Stanford path circle distance common scattering area delay distortion direct path direct-path maximum usable directional antenna distance from Stanford earth's surface energy F layer frequencies several megacycles ground reflection point ground-scattered propagation input ionosphere kilometer echo large divisions low ray signal magneto-ionic components maximum usable frequency megacycles higher microsecond delayed signal microvolts milliseconds in width observed one-hop low ray path distance path length path maximum usable Photographs of pulses pulse width radii Skip distance radio communication receiving antennas San Diego scatter propagation scatter-path maximum usable scatter-sounding scattered signal shown in Fig shows the two-hop signal was scattered Skip distance radii skip distance south skip zone Small divisions sporadic-E ionization square kilometers strong signal transmissions transmitting and receiving two-hop low ray U0 microsecond pulse U000 km radii virtual height