Radiometric Characteristics Test of Integrating Sphere Source Using Wavelength-Tunable Laser

Qiuyun, 徐秋云 Xu; Xiaobing, 郑小兵 Zheng; Wei, 张伟 Zhang; Jianjun, 李健军 Li

doi:10.3788/aos20092905.1310

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relative spectral response (RSR) functions for the spectrometer bands have been measured by the Anhui institute of optics and fine mechanics, China, under laboratory ambient conditions, using a narrow-band scanning with laser-based methods [18], and a uniform and quasi-lambertian area light source from the integrating sphere fed by tunable lasers is generated to provide wavelength coverage from 400 to 1000 nm. For the imaging spectrometer, the shape of the RSR function at 494.4, 599.35, 720.15, and 849.9 nm is shown in Figure 7, and the measurement values have been filtered with a bandwidth of 3.50, 4.80, 6.58, and 8.50 nm, respectively.…”

Section: Laboratory Spectral Calibrationmentioning

confidence: 99%

Comparison of the Lunar Models Using the Hyper-Spectral Imager Observations in Lijiang, China

Wang

Hu²,

Chen³

et al. 2020

Remote Sensing

View full text Add to dashboard Cite

A lunar observation campaign was conducted using a hyper-spectral imaging spectrometer in Lijiang, China from December 2015 to February 2016. The lunar hyper-spectral images in the visible to near-infrared region (VNIR) have been obtained in different lunar phases with absolute scale established by the National Institute of Metrology (NIM), China using the lamp–plate calibration system. At the same time, the aerosol optical depth (AOD) is measured regularly by a lidar and a lunar CE318U for atmospheric characterization to provide nightly atmosphere extinction correction of lunar observations. This paper addressed the complicated data processing procedure in detail from raw images of the spectrometer into the spectral lunar irradiance in different lunar phases. The result of measurement shows that the imaging spectrometer can provide lunar irradiance with uncertainties less than 3.30% except for absorption bands. Except for strong atmosphere absorption region, the mean spectral irradiance difference between the measured irradiance and the ROLO (Robotic Lunar Observatory) model is 8.6 ± 2% over the course of the lunar observation mission. The ROLO model performs more reliable to clarify absolute and relative accuracy of lunar irradiance than that of the MT2009 model in different Sun–Moon–Earth geometry. The spectral ratio analysis of lunar irradiance shows that band-to-band variability in the ROLO model is consistent within 2%, and the consistency of the models in the lunar phase and spectrum is well analyzed and evaluated from phase dependence and phase reddening analysis respectively.

show abstract

Section: Laboratory Spectral Calibrationmentioning

confidence: 99%