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 language | English |
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Pages (from-to) | 29-40 |
Number of pages | 12 |
Journal | Handasa Ve-Adrikhalut/Journal of the Association of Engineers and Architects in Israel |
Volume | 45 |
Issue number | 7 |
State | Published - 1 Dec 1985 |
Event | Pap from the 4th Meet on Opt Eng in Isr - Tel Aviv, Isr Duration: 2 May 1985 → 2 May 1985 |
ASJC Scopus subject areas
- General Engineering