Method of determining ionospheric reflection height

Details Method of determining ionospheric reflection height Method of determining ionospheric reflection height

1976-04-19

1977-03-08

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 12R, G01S 302

Patent

active

040115658

ABSTRACT:
A method for determining the ionospheric reflection height from doppler measurements made over an oblique radio transmission involving reflection of signals from a boundary. This method makes use of multi-hop reflections. The unknown motion of the reflection boundary is eliminated by taking the doppler-shift ratio for a pair of transmission hops. The height of the reflection boundary may be computed from this ratio for the particular distance that separates transmitter from receiver. The equations used follow from relatively simple geometrical considerations derived from spherical boundaries.

REFERENCES:
patent: 3333264 (1967-07-01), Knepper
patent: 3665466 (1972-05-01), Hibbard

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