光学精密工程2017，Vol.25Issue(6)：1403-1409,7.DOI:10.3788/OPE.20172506.1403
机载海洋改进型Dyson高光谱成像仪的研制
Development of airborne ocean modified Dyson hyperspectral imager
摘要
Abstract
Aiming at development requirements of marine environment,ocean color and other fields,an airborne improved Dyson spectral imaging system with wide field of view and large relative aperture was designed.According to optical properties of marine environmental pollution,albedo value of different targets was used to estimate the signal-to-noise ratio(SNR)of target signal for expanding the working waveband of the hyper-spectral imager to the ultraviolet.A detector with large pixel size and an imaging system with large relative aperture were employed for the identification of weak signal of marine target;meanwhile,integration time was reduced to avoid detector saturation caused by excessively strong signals from inshore sand beach.The working waveband of the spectrometer was 0.32~1.05 μm with relative aperture of f/1.8 and pixel size of 24 μm×24 μm.Mutual interferences among slit,detector,optical filter and single lens were avoided through adding falcate correction lens.The design result shows that the optical transfer function at all wavelengths of the whole optical system is more than 0.83.In addition,both the smile and the keystone are less than 4% of pixel size.The designed imaging spectrometer is applicable to monitor marine environmental pollutions,especially marine oil pollution.关键词
光学遥感/高光谱成像仪/信噪比估算/紫外波段/大像元尺寸/大相对孔径Key words
remote sensing/hyperspectral imager/estimated calculation of SNR/ultraviolet waveband/large pixel size/large relative aperture分类
数理科学引用本文复制引用
曹佃生,石振华,林冠宇..机载海洋改进型Dyson高光谱成像仪的研制[J].光学精密工程,2017,25(6):1403-1409,7.基金项目
国家重大科研仪器设备研制专项(No.41527806) （No.41527806）
国家自然基金资助项目(No.41504143) （No.41504143）
长春市重大科技攻关项目(No.14KG024) （No.14KG024）
