Passive method for wind measurement

Details Passive method for wind measurement Passive method for wind measurement

2011-04-12

2011-04-12

Lu, Tom Y (Department: 2624)

Image analysis

Applications

Motion or velocity measuring

C382S103000

Reexamination Certificate

active

07925052

ABSTRACT:
A method for measuring wind velocity including using a Fourier Transform (FT) and a correlation between a wave vector number and temporal frequency of a wind to calculate wind velocity. Contour line deviations in a series of images of a far object are evaluated by performing a spatial discrete fourier transform (DFT) on deviations within each image, and subsequently a time discrete fourier transform (DFT) on the Fourier coefficients obtained by the spatial DFT, to get the frequency dependence of each Fourier coefficient.

REFERENCES:
patent: 4925296 (1990-05-01), Reichmuth
patent: 5159407 (1992-10-01), Churnside et al.

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