Development of Spectral Radiance Measurement System for Sky Background

Abstract

Abstract: To meet the requirement of real-time spectral measurements and feature extraction of sky background radiance, a measuring instrument for spectral radiance of sky background was developed based on fiber optical spectrometer, to acquire spectrum between the wavelength of 340nm and 1030nm, which could both operate at fixed direction mode and whole sky scanning mode. Besides the overall structure, the details of optical component, rotating system, sun tracing module, temperature maintain system, software design, working process and calibration method were also presented. The calibrated test results has been analyzed to prove the instruments’ reliability, and shows that it provided a way for real-time spectral measurements of sky background radiance.

Key words: sky background, background radiance, spectral measurement, measurement apparatus

CLC Number:

P416.2

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