Calibration of the degree of linear polarization measurement of polarized radiometer using solar light

被引：23

作者：

Li, Zhengqiang ^{[1
,2
]}

Blarel, Luc ^{[1
]}

Podvin, Thierry ^{[1
]}

Goloub, Philippe ^{[1
]}

Chen, Ligang ^{[3
]}

机构：

[1] Univ Lille 1, Opt Atmospher Lab, F-59655 Villeneuve Dascq, France

[2] Chinese Acad Sci, Inst Remote Sensing Applicat, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China

[3] Chinese Acad Sci, Key Lab Opt Calibrat & Characterizat, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China

来源：

APPLIED OPTICS | 2010年 / 49卷 / 08期

关键词：

POLARIMETRIC MEASUREMENTS; AEROSOL PROPERTIES; SCATTERING; RETRIEVAL; SATELLITE;

D O I：

10.1364/AO.49.001249

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We establish a polarimetric reference for the degree of linear polarization (DOLP) measurement calibration, based on direct and reflected solar light, with a theoretical error of about 0.0012. This calibration source can be used to calibrate polarized radiometers instead of complex laboratory devices and can respond from UV to near infrared wavelengths. A two-step method for calibrating the DOLP measurement is proposed and applied to a ground-based polarized radiometer. The first step is correcting the transmittance difference between polarizer units using the direct solar beam, while the second step corrects possible bias in DOLP measurement using the reflected solar light as a reference. Based on instrument characterization, calibration results obtained with the new polarized sun-sky radiometer, CE-318-DP, are discussed and compared with laboratory results. (C) 2010 Optical Society of America

引用

页码：1249 / 1256

页数：8

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