Measurements of atmospheric turbulence with an x-band radar: correlation with angle-of-arrival results

E. Jeff Holder; James Clayton Kerce; Ronald A. Smith; Mark Shipman; Robert W. McMillan; James K. Williams

doi:10.1117/12.488282

30 July 2002 Measurements of atmospheric turbulence with an x-band radar: correlation with angle-of-arrival results

E. Jeff Holder, James Clayton Kerce, Ronald A. Smith, Mark Shipman, Robert W. McMillan, James K. Williams

Proceedings Volume 4744, Radar Sensor Technology and Data Visualization; (2002) https://doi.org/10.1117/12.488282
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

We report on measurements of the index of refraction structure parameter C_n² using an X-band interferometric radar operating over a 3.5 km path in Southern California. These measurements were made by observing signal fluctuations and relating them to the structure parameter. Simultaneous measurements of temperature, atmospheric pressure, and humidity were made at the end points of the range. Values of C_n² ranging from 1.4 x 10^-15 to 6.3 x 10^-15 m^-2/3 were observed over a propagation path that was up to 275 m above ground level. These values are generally much larger than those that would be observed at visible wavelengths under the same conditions because of the contributions of the humidity structure parameter and the cross correlation of the temperature and humidity structure parameters. We also address correlation of these measurements of C_n² with fluctuations in the radar angle-of-arrival.

Citation Download Citation

E. Jeff Holder, James Clayton Kerce, Ronald A. Smith, Mark Shipman, Robert W. McMillan, and James K. Williams "Measurements of atmospheric turbulence with an x-band radar: correlation with angle-of-arrival results", Proc. SPIE 4744, Radar Sensor Technology and Data Visualization, (30 July 2002); https://doi.org/10.1117/12.488282

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