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Description
This report illustrates some of the typical backscatter echoes observed at College, Alaska. Backscatter soundings are being made in five directions—015, 105, 210, 270 and 325 degrees true bearing. The majority of the echoes seen were not groundscatter as usually defined. Many echoes from the northern directions were, in fact, direct scatter echoes from the ionosphere. Groundscatter echoes were regularly observed from the south during this past winter, but only rarely from the north. Sample forward oblique ionograms recorded over the Andöya, Norway, to College, Alaska, path are shown. Preliminary results indicate that the signals were primarily propagated via E or Es layers. Signals with delays of 3 to 10 milliseconds over the great-circle path delay were quite common on all the paths monitored at College. The sample records shown contain signals with delays of 4 to 5 milliseconds.
Publication Date
3-17-1964
Keywords
Backscattering, Observations, Alaska, Sounding and soundings, Experiments, Echo, Analysis
Recommended Citation
Bates, Howard F. and Goddard, Arthur, "College oblique ionograms" (1964). GI Reports. 183.
https://ualaska.researchcommons.org/uaf_gi_reports/183
Handle
http://hdl.handle.net/11122/15619