Real-time wind speed measurement using wavefront sensor data

M. B. Roopashree; Vyas Akondi; Raghavendra Prasad Budihala

doi:10.1117/12.841333

26 February 2010 Real-time wind speed measurement using wavefront sensor data

M. B. Roopashree, Vyas Akondi, Raghavendra Prasad Budihala

Proceedings Volume 7588, Atmospheric and Oceanic Propagation of Electromagnetic Waves IV; 75880A (2010) https://doi.org/10.1117/12.841333
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

Real-time measurement of effective wind speed helps in continuous monitoring of the temporal bandwidth in adaptive optics systems. In this paper, we propose a simple and efficient method for estimating wind speed from wavefront sensor data. A small portion from the center of a wavefront arriving at time 't' is mapped at all possible positions on phase screens coming later than 't' by a time n × Δt_int (Δt_int-integration time, n-integer) to form correlation maps. Wind speed and direction is estimated statistically via the calculation of the vectors formed by joining the central portion and the position of maximum correlation on the correlation maps. Number of such realizations to be considered to arrive at an accurate estimate of wind speed was optimized to reduce computing time and increase accuracy.

Citation Download Citation

M. B. Roopashree, Vyas Akondi, and Raghavendra Prasad Budihala "Real-time wind speed measurement using wavefront sensor data", Proc. SPIE 7588, Atmospheric and Oceanic Propagation of Electromagnetic Waves IV, 75880A (26 February 2010); https://doi.org/10.1117/12.841333

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