Abstract

We report results of an experiment in which scintillation variances of log intensity are measured simultaneously with micrometeorological measurements. The latter give four methods for estimating the turbulence inner scale. The propagation path was short, 150 m, such that weak scintillation occurred. The variances were from an effective spherical-wave transmitter and point receiver as well as a large, phase-incoherent transmitter with a similar receiver. We show that the former variance arises from the dissipation range of the refractive-index spectrum and the latter from the spectral bump that lies at the high-wave-number end of the inertial range. When an inner scale deduced from micrometeorological measurements is used, the ratio of these scintillation variances agrees well with theoretical predictions that use an accurate model of the refractive-index spectrum. The measurements extend deeper into the dissipation range than previous similar measurements, further verifying this spectrum model. The measurements from a wide variety of micrometeorological conditions all lie on a single theoretical curve, verifying the universality of small-scale turbulence.

© 1992 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Inner-scale effect on irradiance variance measured for weak-to-strong atmospheric scintillation

Anna Consortini, F. Cochetti, James H. Churnside, and Reginald J. Hill
J. Opt. Soc. Am. A 10(11) 2354-2362 (1993)

Comparison of scintillation methods for measuring the inner scale of turbulence

Reginald J. Hill
Appl. Opt. 27(11) 2187-2193 (1988)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (17)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription