Transverse Coherence Length (ro) Observations

F. D. Eaton; D. M. Garvey; E. Dewan; R. Beland

doi:10.1117/12.948395

9 September 1985 Transverse Coherence Length (r_o) Observations

F. D. Eaton, D. M. Garvey, E. Dewan, R. Beland

Proceedings Volume 0547, Effects of the Environment on Systems Performance; (1985) https://doi.org/10.1117/12.948395
Event: 1985 Technical Symposium East, 1985, Arlington, United States

Abstract

The transverse coherence length (r0) was directly measured approximately every 5 minutes from 29 August to 28 September 1984 at HIDL, WSMR. An MTF-device was used with stellar sources for the ro observations. The diurnal variation of ro is discussed and related to processes affecting optical turbulence in the planetary boundary layer. A complete heat exchange study involving radiative, sensible heat, latent heat and soil heat fluxes is presented and related to ro values as well as to surface measured Cn2 . Of particular n interest to the problem is the observed surface thermal activity. Vertical profile measurements of Cen, obtained from th.ermosondes at various times of the day and night, are presented to show the contributions of optical turbulence at various levels in the atmos-phere to r_o. C2n development as related to solar activity is discussed. The measured Cn2 profiles are compared to appropriate models.

Citation Download Citation

F. D. Eaton, D. M. Garvey, E. Dewan, and R. Beland "Transverse Coherence Length (r_o) Observations", Proc. SPIE 0547, Effects of the Environment on Systems Performance, (9 September 1985); https://doi.org/10.1117/12.948395

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