Acoustic sounder system design for measurement of optical turbulence and wind profiles

Judith E. Miller; Frank D. Eaton; Sheldon S. Stokes

doi:10.1117/12.391866

21 July 2000 Acoustic sounder system design for measurement of optical turbulence and wind profiles

Judith E. Miller, Frank D. Eaton, Sheldon S. Stokes

Proceedings Volume 4034, Laser Weapons Technology; (2000) https://doi.org/10.1117/12.391866
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

An Acoustic Sounder System has been installed on the side of the cliff at North Oscura Peak, WSMR to provide important refractive index structure parameter, Cn² data for laser propagation tests. The acoustic sounder system records echo information that is used to provide 3D wind and optical turbulence profiles. The received signal is the product of the interaction of the transmitted acoustic pulse with the small scale atmospheric temperature variations. This information is displayed as a time-height display of the signal intensity. The frequency of the received signals are processed and converted into time histories of the horizontal wind field. The data from the Acoustic Sounder is calibrated with the hot-wire anemometer temperature structure parameter (C_t²) data, and meteorological data measured locally to produce the C_n² profile. The design and location of the Acoustic Sounder System will be discussed along with the methodology of extracting the turbulence. Many days of data have been collected and representative data will be shown.

Citation Download Citation

Judith E. Miller, Frank D. Eaton, and Sheldon S. Stokes "Acoustic sounder system design for measurement of optical turbulence and wind profiles", Proc. SPIE 4034, Laser Weapons Technology, (21 July 2000); https://doi.org/10.1117/12.391866

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