Abstract

Within the framework of a feasibility study of remote cross-wind velocity measurements by means of laser Doppler anemometry (LDA), a study was made of the atmospheric fluctuation effects on an optical interference fringe system generated over a distance of 500 m. Variations of the fringe visibility and spacing have been recorded simultaneously. In order to characterize the optical turbulence of the atmosphere during the measurements, an optical scintillometer was used. Provided the atmospheric extinction is low enough, the measured results show that, even under weather conditions which are very unfavorable to the propagation of laser beams, the interference fringe pattern generated is of sufficient quality for LDA measurements.

© 1980 Optical Society of America

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  1. T. R. Lawrence, D. J. Wilson, and C. E. Craven, "A laser velocimeter for remote wind sensing," Rev. Sci. Instrum. 43, 512–518 (1972).
  2. A. J. Hughes and E. R. Pike, "Remote measurement of wind speed by laser Doppler systems," Appl. Opt. 12, 597–601 (1973).
  3. R. L. Schwiesow, and R. E. Cupp, "Remote Doppler velocity measurements of atmospheric dust devil vortices," Appl. Opt. 15, 1–2 (1976).
  4. K. G. Bartlett and C. Y. She, "Single-particle correlated time-of-flight velocimeter for remote wind-speed measurement," Opt. Lett. 1, 175–177 (1977).
  5. R. S. Lawrence, G. R. Ochs, and S. F. Clifford, "Use of scintillations to measure average wind across a light beam," Appl. Opt. 11, 239–243 (1972).
  6. D. L. Fried, "Remote Probing of the Optical Strength of Atmospheric Turbulence and of Wind Velocity," Proc. IEEE, 57, 415–420 (1969).
  7. S. F. Clifford, G. R. Ochs, and T-i. Wang, "Optical wind sensing by observing the scintillations of a random scene," Appl. Opt. 14, 2844–2850 (1975).
  8. D. L. Walters, "Passive remote crosswind sensor," Appl. Opt. 16, 2625–2626 (1977).
  9. B. Lehmann, H. J. Pfeifer, and H. D. vom Stein, Verfahren zur Messung der Geschwindigkeit von optisch streuenden Objekten, Deutsches Patentamt, Offenlegungsschrift 1673 403 (1967).
  10. F. Durst, A. Melling, and J. H. Whitelaw, Principles and Practice of Laser Doppler Anemometry (Academic, London, 1976).
  11. T. S. Durrani, and C. A. Greated, Laser Systems in Flow Measurement (Plenum, New York, 1977).
  12. E. Ryznar, "Dependency of optical scintillation frequency on wind speed," Appl. Opt. 4, 1416–1418 (1965).
  13. H. J. Pfeifer and H. D. vom Stein, "An automatic data processing system for Laser anemometers," IEEE Trans. Aerospace Electron. Syst. AES-8, 345–349 (1972).
  14. V. I. Tatarski, Wave Propagation in a Turbulent Medium (McGraw-Hill, New York, 1961), p. 58.
  15. D. H. Höhn, "Zur Ausbreitung eines Laserstrahls in der Atmosphäre," Optik 30, Heft 2, 161–170 (1969).
  16. J. Abele and H. Raidt, "Zur Laser-Doppler-Anemometrie in der freien Atmosphäre," Forschungsinstitut für Optik, D-7400 Tülbingen, Report FfO 1978/5 (1978).
  17. H. Raidt and A. Jetter, "Laser-Szintillometer," Forschungsinstitut für Optik, D-7400 Tübingen, Report 1977/46 (1977).
  18. H. Z. Cummins and E. R. Pike, editors, Photon Correlation Spectroscopy and Velocimetry (Plenum, New York and London, 1977).
  19. D. A. de Wolf, "Optical Propagation through Turbulent Air," Opt. Laser Technol., February, 1979, pp. 29–36.

1977 (2)

1976 (1)

1975 (1)

1973 (1)

1972 (3)

T. R. Lawrence, D. J. Wilson, and C. E. Craven, "A laser velocimeter for remote wind sensing," Rev. Sci. Instrum. 43, 512–518 (1972).

R. S. Lawrence, G. R. Ochs, and S. F. Clifford, "Use of scintillations to measure average wind across a light beam," Appl. Opt. 11, 239–243 (1972).

H. J. Pfeifer and H. D. vom Stein, "An automatic data processing system for Laser anemometers," IEEE Trans. Aerospace Electron. Syst. AES-8, 345–349 (1972).

1969 (1)

D. H. Höhn, "Zur Ausbreitung eines Laserstrahls in der Atmosphäre," Optik 30, Heft 2, 161–170 (1969).

1965 (1)

Abele, J.

J. Abele and H. Raidt, "Zur Laser-Doppler-Anemometrie in der freien Atmosphäre," Forschungsinstitut für Optik, D-7400 Tülbingen, Report FfO 1978/5 (1978).

Bartlett, K. G.

Clifford, S. F.

Craven, C. E.

T. R. Lawrence, D. J. Wilson, and C. E. Craven, "A laser velocimeter for remote wind sensing," Rev. Sci. Instrum. 43, 512–518 (1972).

Cupp, R. E.

de Wolf, D. A.

D. A. de Wolf, "Optical Propagation through Turbulent Air," Opt. Laser Technol., February, 1979, pp. 29–36.

Durrani, T. S.

T. S. Durrani, and C. A. Greated, Laser Systems in Flow Measurement (Plenum, New York, 1977).

Durst, F.

F. Durst, A. Melling, and J. H. Whitelaw, Principles and Practice of Laser Doppler Anemometry (Academic, London, 1976).

Fried, D. L.

D. L. Fried, "Remote Probing of the Optical Strength of Atmospheric Turbulence and of Wind Velocity," Proc. IEEE, 57, 415–420 (1969).

Greated, C. A.

T. S. Durrani, and C. A. Greated, Laser Systems in Flow Measurement (Plenum, New York, 1977).

Höhn, D. H.

D. H. Höhn, "Zur Ausbreitung eines Laserstrahls in der Atmosphäre," Optik 30, Heft 2, 161–170 (1969).

Hughes, A. J.

Jetter, A.

H. Raidt and A. Jetter, "Laser-Szintillometer," Forschungsinstitut für Optik, D-7400 Tübingen, Report 1977/46 (1977).

Lawrence, R. S.

Lawrence, T. R.

T. R. Lawrence, D. J. Wilson, and C. E. Craven, "A laser velocimeter for remote wind sensing," Rev. Sci. Instrum. 43, 512–518 (1972).

Lehmann, B.

B. Lehmann, H. J. Pfeifer, and H. D. vom Stein, Verfahren zur Messung der Geschwindigkeit von optisch streuenden Objekten, Deutsches Patentamt, Offenlegungsschrift 1673 403 (1967).

Melling, A.

F. Durst, A. Melling, and J. H. Whitelaw, Principles and Practice of Laser Doppler Anemometry (Academic, London, 1976).

Ochs, G. R.

Pfeifer, H. J.

H. J. Pfeifer and H. D. vom Stein, "An automatic data processing system for Laser anemometers," IEEE Trans. Aerospace Electron. Syst. AES-8, 345–349 (1972).

B. Lehmann, H. J. Pfeifer, and H. D. vom Stein, Verfahren zur Messung der Geschwindigkeit von optisch streuenden Objekten, Deutsches Patentamt, Offenlegungsschrift 1673 403 (1967).

Pike, E. R.

Raidt, H.

J. Abele and H. Raidt, "Zur Laser-Doppler-Anemometrie in der freien Atmosphäre," Forschungsinstitut für Optik, D-7400 Tülbingen, Report FfO 1978/5 (1978).

H. Raidt and A. Jetter, "Laser-Szintillometer," Forschungsinstitut für Optik, D-7400 Tübingen, Report 1977/46 (1977).

Ryznar, E.

Schwiesow, R. L.

She, C. Y.

Tatarski, V. I.

V. I. Tatarski, Wave Propagation in a Turbulent Medium (McGraw-Hill, New York, 1961), p. 58.

vom Stein, H. D.

H. J. Pfeifer and H. D. vom Stein, "An automatic data processing system for Laser anemometers," IEEE Trans. Aerospace Electron. Syst. AES-8, 345–349 (1972).

B. Lehmann, H. J. Pfeifer, and H. D. vom Stein, Verfahren zur Messung der Geschwindigkeit von optisch streuenden Objekten, Deutsches Patentamt, Offenlegungsschrift 1673 403 (1967).

Walters, D. L.

Wang, T-i.

Whitelaw, J. H.

F. Durst, A. Melling, and J. H. Whitelaw, Principles and Practice of Laser Doppler Anemometry (Academic, London, 1976).

Wilson, D. J.

T. R. Lawrence, D. J. Wilson, and C. E. Craven, "A laser velocimeter for remote wind sensing," Rev. Sci. Instrum. 43, 512–518 (1972).

Appl. Opt. (6)

IEEE Trans. Aerospace Electron. Syst. (1)

H. J. Pfeifer and H. D. vom Stein, "An automatic data processing system for Laser anemometers," IEEE Trans. Aerospace Electron. Syst. AES-8, 345–349 (1972).

Opt. Lett. (1)

Optik (1)

D. H. Höhn, "Zur Ausbreitung eines Laserstrahls in der Atmosphäre," Optik 30, Heft 2, 161–170 (1969).

Rev. Sci. Instrum. (1)

T. R. Lawrence, D. J. Wilson, and C. E. Craven, "A laser velocimeter for remote wind sensing," Rev. Sci. Instrum. 43, 512–518 (1972).

Other (9)

V. I. Tatarski, Wave Propagation in a Turbulent Medium (McGraw-Hill, New York, 1961), p. 58.

J. Abele and H. Raidt, "Zur Laser-Doppler-Anemometrie in der freien Atmosphäre," Forschungsinstitut für Optik, D-7400 Tülbingen, Report FfO 1978/5 (1978).

H. Raidt and A. Jetter, "Laser-Szintillometer," Forschungsinstitut für Optik, D-7400 Tübingen, Report 1977/46 (1977).

H. Z. Cummins and E. R. Pike, editors, Photon Correlation Spectroscopy and Velocimetry (Plenum, New York and London, 1977).

D. A. de Wolf, "Optical Propagation through Turbulent Air," Opt. Laser Technol., February, 1979, pp. 29–36.

D. L. Fried, "Remote Probing of the Optical Strength of Atmospheric Turbulence and of Wind Velocity," Proc. IEEE, 57, 415–420 (1969).

B. Lehmann, H. J. Pfeifer, and H. D. vom Stein, Verfahren zur Messung der Geschwindigkeit von optisch streuenden Objekten, Deutsches Patentamt, Offenlegungsschrift 1673 403 (1967).

F. Durst, A. Melling, and J. H. Whitelaw, Principles and Practice of Laser Doppler Anemometry (Academic, London, 1976).

T. S. Durrani, and C. A. Greated, Laser Systems in Flow Measurement (Plenum, New York, 1977).

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