EFFECTS OF WEATHER ON IMAGING THROUGH THE ATMOSPHERE.

N. S. Kopeika, A. N. Seidman, I. Dinstein, C. Tarnasha, R. Amir, Y. Biton

Research output: Contribution to journalConference articlepeer-review

Abstract

Calculations are made of regression coefficients for relative humidity, air temperature, and windspeed with respect to atmospheric contrasts in various wavelength bands over visible and near IR wavelengths as measured over a 3 year period. Significant changes are noted between summer and winter, including some sign changes and opposing wavelength dependences. Analysis of spatial frequency data indicates in the rainy season, when the atmosphere is free of airborne solid-derived particulates, turbulence is dominant in limiting imaging resolution through the atmosphere, with wavelength dependence determined primarily by background and forward scattering effects associated with humidity. Resolution is best in the near infrared. However, in the dry season image quality is limited primarily by large airborne particulates and their effects on atmospheric background and spatial frequency-dependent multiple forward scattering phenomena. As a result, resolution is best at short wavelengths.

Original languageEnglish
Pages (from-to)29-40
Number of pages12
JournalHandasa Ve-Adrikhalut/Journal of the Association of Engineers and Architects in Israel
Volume45
Issue number7
StatePublished - 1 Dec 1985
EventPap from the 4th Meet on Opt Eng in Isr - Tel Aviv, Isr
Duration: 2 May 19852 May 1985

ASJC Scopus subject areas

  • Engineering (all)

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