The Boeing Company

Angel Portillo

Richard B Holmes

Ralph R Galetti

Michael C Cates

Jeremy Manning

Robert Fetner, Iii

Teresa Neudecker

Paul V Knowlton

A device includes an image sensor, first optics, second optics, and a processor. The first optics are configured to form a first optical pattern (OP) on the image sensor. The first OP is associated with a first wavelength. The second optics are configured to form a second OP on the image sensor. The second OP is associated with a second wavelength that is longer than the first wavelength. The processor is configured to generate a first turbulence estimate based on relative motion of the first OP, to generate a second turbulence estimate based on relative motion of the second OP, and to generate error correction data. The processor is also configured to adjust the first turbulence estimate based on the error correction data and the second turbulence estimate to determine an estimated turbulence value. The processor may also be configured to estimate a wind profile, a turbulence profile, or both.

System and method for estimating turbulence based on multiple wavelengths

The disclosed method for fiber stabilization of optical path differences involves splitting a laser produced optical beam into a first and second optical beam. Further, the method involves circulating the first optical beam to an adjustable optical telescope, and circulating the second optical beam to a reference optical telescope. Also, the method involves splitting the first circulated beam into the first optical beam and the adjustable optical telescope beam, and splitting the second circulated beam into the second optical beam and the reference optical telescope beam. Additionally, the method involves inputting, into an interferometer, the first and second optical beams; and outputting, from the interferometer, a sinusoidal signal. Also, the method comprises filtering the sinusoidal signal to form a high frequency and low frequency signal. Further, the method involves controlling a translation stage by using the low frequency signal, and controlling a fiber stretcher by using the high frequency signal.

Fiber stabilization of optical path differences (OPD) over a wide bandwidth frequency range for extended periods of time

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Albuquerque, NM, United States of America

Angel Portillo