کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1534290 1512593 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temporal spectrum of atmospheric scintillation and the effects of aperture averaging and time averaging
ترجمه فارسی عنوان
طیف زمانبندی ذرات جوی و اثرات متوسط ​​دیافراگم و میانگین زمان بندی
کلمات کلیدی
آشفتگی نوری، طیف زمانی زلزله جوی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی

The general analytic expression for the temporal spectrum of atmospheric scintillation under weak turbulence condition is derived. It was employed to study the characteristics of the temporal spectra for horizontal uniform path and whole layer atmospheric non-uniform path. In the non-uniform path, the H-V turbulence model and the Gaussian wind speed model are utilized. It has been found that when the receiver diameter is larger than Fresnel scale (λL)1/2, the temporal spectrum of the plane wave have a power law behavior with a scaling index – 17/3 in high-frequency range. The change of the turbulence strength has little influence on the shape of the temporal spectrum. Based on the characteristics of the temporal spectrum, the aperture-averaging and time-averaging effects on scintillation were analyzed in the frequency domain.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 330, 1 November 2014, Pages 160–164
نویسندگان
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