Communications: directive radio wave systems and devices (e.g. – Radar for meteorological use
Reexamination Certificate
2005-02-15
2005-02-15
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Radar for meteorological use
C073S170130
Reexamination Certificate
active
06856273
ABSTRACT:
The present invention is directed to a radio-acoustic sounding system for providing wind measurements at altitudes of 100 meters or less. Wind measurements are obtained by transmitting a pulse of audio frequency energy through one or more volumes corresponding to the coverage area of one or more radio frequency transceivers. The frequency of the audio pulse is selected to have a wavelength that is one-half the wavelength of the electromagnetic energy transmitted by the antenna or antennas. By monitoring a return radio frequency signal at selected times following the transmission of the audio pulse, wind data is obtained at selected altitudes. Wind speed and direction can be obtained by observing the Doppler frequency shift of return radio frequency signals, or by observing the amplitude of the return radio frequency signals. In accordance with an embodiment of the present invention, precipitation measurements may be made by transmitting a radio frequency signal at the same radio frequency as is used in connection with wind measurements, and observing return radio frequency signals.
REFERENCES:
patent: 4006477 (1977-02-01), Yost et al.
patent: 4222265 (1980-09-01), Ravussin
patent: 4351188 (1982-09-01), Fukushima et al.
patent: 4573352 (1986-03-01), Hurtig et al.
patent: 4761650 (1988-08-01), Masuda et al.
patent: 5122805 (1992-06-01), Peterman et al.
patent: 5125268 (1992-06-01), Caron
patent: 5544525 (1996-08-01), Peterman et al.
patent: 6070461 (2000-06-01), Gjessing et al.
Stephens, Graeme L., “Remote Sensing of the Lower Atmosphere: An Introduction,” pp. 403-419, Oxford University Press: New York, 1994.
Houze, Robert A., Jr., “Cloud Dynamics,” pp. 110-117, Academic Press: San Diego, California, 1993.
Atmospheric Research Pty Ltd., “The ARPL RASS,” online at http://www.a-research.com.au/rass.html, accessed Dec. 10, 2002 (first accessed May 24, 2001).
Brown, William, et al., “Introduction to the McGill Profiler,” online at http://www.radar.mcgill.ca/profiler.html, Aug., 2000, accessed Dec. 10, 2002 (first accessed May 24, 2001).
Fabry, Frederic, “The RASS addition to the profiler,” online at http://www.radar.mcgill.ca/rass.html, Aug., 2000, accessed Dec. 10, 2002 (first accessed May 24, 2001).
Geerts, B., “Radio acoustic sounding system,” online at http://www.weather.uwyo.edu/˜geerts/cwx
otes/chap15/rass.html, accessed Dec. 10, 2002 (first accessed May 24, 2001).
Andrea Brian
Gregory Bernarr E.
Sheridan & Ross P.C.
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