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Finite aperture optical scintillometer for profiling wind and C(2)(n).

G R Ochs, T I Wang

|March 9, 2010

Summary

A novel optical method accurately measures crosswind and refractive index variations along a line-of-sight path. This technique uses adjustable transmitter and receiver sizes to profile atmospheric conditions effectively.

Area of Science:

Atmospheric optics
Optical remote sensing
Meteorological measurements

Background:

Accurate measurement of atmospheric parameters like crosswind and refractive index is crucial for various applications.
Existing methods may have limitations in spatial resolution or applicability along line-of-sight paths.

Purpose of the Study:

To develop and validate a new optical technique for measuring path profiles of crosswind and refractive-index structure parameter C(2)(n).
To demonstrate the ability to control path-weighting functions for localized atmospheric measurements.

Main Methods:

Utilizing an optical technique with variable transmitter and receiver sizes to control path-weighting functions.
Employing linear combinations of measurements to derive crosswind and C(2)(n) profiles.

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Developing and testing a prototype instrument.

Main Results:

The prototype instrument successfully measured path profiles of crosswind and C(2)(n).
Experimental results demonstrated good agreement with theoretical predictions.
The technique allows for peaking the path-weighting function at different locations.

Conclusions:

The described optical technique provides an effective means for profiling crosswind and C(2)(n) along line-of-sight paths.
The method offers flexibility in targeting specific path locations for measurement.
The validated prototype confirms the technique's practical applicability and accuracy.