夜晚天空光谱辐射测量研究及光谱去噪分析

Measurement of Night Sky Spectral Radiation and Analysis of Spectral Denoising

光电成像器件在实现夜间光辐射探测时,由于其探测环境的光谱特性与标准光源完全不同,势必在成像特性分析上,由于光谱匹配带来较大误差。采用便携式CCD光纤光谱仪对晴朗月空、晴朗星空进行夜晚天光的光谱辐射特性测量,并进行光谱分析从而为正确评价光电成像器件的成像特性提供参考。

In spectral radiation detection,spectral characteristics of the environment are completely different from standard light sources,so the output characteristics of optical imaging device is bound to bring greater error due to spectrum matching in imaging characteristic analysis.In the present paper,we measured moon-light and star-light spectral radiation using a portable CCD fiber spectrometer,and analyzed spectral characteristics,which provided a reference to correctly evaluate the imaging performance of optical imaging device.