On the mode theory of V. L. F. ionospheric propagation |
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| Authors: | James R Wait |
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| Institution: | (1) Boulder Laboratories, National Bureau of Standards, Boulder, Colorado, (U.S.A.) |
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| Abstract: | Summary The space between the earth and the ionosphere is considered as a wave-guide with sharply bounded walls. Employing a representation in terms of spherical wave functions of complex order, the field of a vertical dipole source is calculated for very low frequencies. It is shown that the dominant mode for 16 kc is of order one and not zero as has been commonly supposed. Good agreement is obtained with the experimental results ofJ. Heritage.Paper presented at «Colloque International sur la propagation des Ondes Radio électriques» Paris, September 1956. |
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