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A New Radiosonde System for Profiling the Lower Troposphere

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  • 1 Department of Electrical Engineering and Center for Electro-Optics, University of Nebraska at Lincoln, Lincoln, Nebraska
  • | 2 Department of Physics and Astronomy, Clemson University, Clemson, South Carolina
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Abstract

A new, inexpensive radiosonde transmitter and receiver system has been developed for measuring wind field inhomogeneities in the planetary boundary layer using multiple simultaneously launched balloons. The radiosondes use a narrowband-frequency-modulated carrier signal to transmit atmospheric pressure and temperature information to a surface receiver. The pressure and temperature data transmitted by the radiosondes allow their height above the surface to be ascertained. In addition, the radiosondes can be tracked with a photographic camera system to provide the azimuth and elevation angles of the radiosondes during their ascent, so that their three-dimensional horizontal position can be determined. By tracking the spatial separation of the radiosondes over time, horizontal gradients can be derived. The system hardware and results from preliminary tests are described.

Corresponding author address: Brian R. Corner, Department of Electrical Engineering, 209 North Walter Scott Engineering Center, P.O. Box 880511, Lincoln, NE 68588-0511.

Abstract

A new, inexpensive radiosonde transmitter and receiver system has been developed for measuring wind field inhomogeneities in the planetary boundary layer using multiple simultaneously launched balloons. The radiosondes use a narrowband-frequency-modulated carrier signal to transmit atmospheric pressure and temperature information to a surface receiver. The pressure and temperature data transmitted by the radiosondes allow their height above the surface to be ascertained. In addition, the radiosondes can be tracked with a photographic camera system to provide the azimuth and elevation angles of the radiosondes during their ascent, so that their three-dimensional horizontal position can be determined. By tracking the spatial separation of the radiosondes over time, horizontal gradients can be derived. The system hardware and results from preliminary tests are described.

Corresponding author address: Brian R. Corner, Department of Electrical Engineering, 209 North Walter Scott Engineering Center, P.O. Box 880511, Lincoln, NE 68588-0511.

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