System for measuring height distributions of atmospheric tempera

Details System for measuring height distributions of atmospheric tempera System for measuring height distributions of atmospheric tempera

1986-12-05

1988-08-02

Tubbesing, T. H.

Communications: directive radio wave systems and devices (e.g.,

Radar for meteorological use

342 52, G01S 1395

Patent

active

047616504

ABSTRACT:
A system for measuring height distributions of atmospheric temperature and wind velocity (wind direction and wind speed) utilizes the facts that a sound wavefront in the atmosphere constitutes part of an ellipsoidal surface and that there always exists a normal which passes through an interior point of the ellipsoid. The Doppler radar is capable of measuring a height distribution of wind velocity on the basis of Doppler frequencies of scattered waves produced by the atmospheric turbulence. The radar and generator are arranged on a straight line in the wind direction so that a radio wave from the radar is directed to the wavefront of a sound wave from the generator. The radar antenna beam is scanned so that it perpendicularly intersects the sound wavefront. The speed of the sound wavefront is measured from the Doppler frequencies of reflected waves. The sound speed is obtained by removing the wind speed component from the measured speed of the sound wavefront. The sound speed obtained is calculated in terms of atmospheric temperature, thereby obtaining the height distribution of the atmospheric temperature.

REFERENCES:
patent: 3139617 (1964-06-01), Denman et al.
patent: 4219887 (1980-08-01), MacCready et al.
patent: 4222265 (1980-09-01), Ravussin
patent: 4286462 (1981-09-01), Bourne
patent: 4351188 (1982-09-01), Fukushima et al.
patent: 4481517 (1984-11-01), Brown
patent: 4647933 (1987-03-01), Hogg

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