摘要

GF-5卫星多角度偏振成像仪(DPC)同一波段三个偏振通道(0°、60°及120°)必须进行响应非一致性校正,才能达到偏振探测的精度要求。将范围为-50°~50°的DPC宽视场划分为15×15个分视场,使用高精度的二维转动平台调整各分视场的位置以对准积分球参考光源进行成像。设计基于时间稳定性的分视场图像数据的拼接算法,得到全视场的拼接图像,并应用对数增强方法检测拼接图像中坏像元的位置与数量。采用拼接图像计算DPC同一波段三偏振通道的相对透过率、低频相对透过率及高频相对透过率,为DPC偏振通道响应非一致性校正提供了校正系数。结果表明,DPC偏振通道的响应非一致性测量不确定度优于0.67%。所提方法为校正DPC偏振通道间的响应非一致性、提高偏振信息的解析精度提供了高精度的手段。

Abstract

Only calibrating the response non-uniformity among three polarization channels of 0°, 60°, and 120° in the same waveband of a GF-5 satellite directional polarization camera (DPC) can make the accuracy requirement of polarization detection met. The wide field-of-view with DPC range of -50°--50° is divided into 15×15 sectional field-of-view and a high-accuracy two-dimensional turntable is used to adjust the position of each sectional field-of-view for aiming the integrating sphere reference light for imaging. The mosaic algorithm of the sectional field-of-view image data based on time stability is designed to obtain the mosaic images of the entire field-of-view. Furthermore, the logarithm enhancement method is used to detect the location and number of bad pixels in the mosaic images. The mosaic images are used to calculate the relative transmittance, low frequency relative transmittance, and high frequency relative transmittance of three polarization channels in the same waveband of DPC, and a calibration factor is provided for the calibration of DPC polarization channel response non-uniformity. The results show that the measurement uncertainty of DPC polarization channel response non-uniformity is superior to 0.67%. The proposed method provides a high-precision tool for calibrating the response non-uniformity among DPC polarization channels and for improving the analytical accuracy of polarization information.

补充资料

中图分类号：TP79

DOI：10.3788/AOS202040.0828001

所属栏目：遥感与传感器

基金项目：国家自然科学基金;

收稿日期：2019-11-25

修改稿日期：2019-12-31

网络出版日期：2020-04-01

作者单位    点击查看

联系人作者：袁银麟(ylyuan@aiofm.ac.cn)

备注：国家自然科学基金;

【1】Ji E Y, Gu G H, Bai L F, et al. Three-channel polarization imaging systems and system error correction method [J]. Acta Photonica Sinica. 2014, 43(1): 111002.
季尔优, 顾国华, 柏连发, 等. 三通道偏振成像系统及系统误差校正方法 [J]. 光子学报. 2014, 43(1): 111002.

【2】Gu X F, Chen X F, Cheng T H, et al. In-flight polarization calibration methods of directional polarized remote sensing camera DPC [J]. Acta Physica Sinica. 2011, 60(7): 070702.
顾行发, 陈兴峰, 程天海, 等. 多角度偏振遥感相机DPC在轨偏振定标 [J]. 物理学报. 2011, 60(7): 070702.

【3】Li Z Q, Hou W Z, Hong J, et al. Directional polarimetric camera (DPC): monitoring aerosol spectral optical properties over land from satellite observation [J]. Journal of Quantitative Spectroscopy and Radiative Transfer. 2018, 218: 21-37.

【4】Hagolle O, Goloub P, Deschamps P Y, et al. Results of POLDER in-flight calibration [J]. IEEE Transactions on Geoscience and Remote Sensing. 1999, 37(3): 1550-1566.

【5】Ren J W, Liu Z X, Wan Z, et al. Radiometric calibration of off-axis three-mirror-anastigmat space camera with wide viewing field [J]. Optics and Precision Engineering. 2010, 18(7): 1491-1497.
任建伟, 刘则洵, 万志, 等. 离轴三反宽视场空间相机的辐射定标 [J]. 光学精密工程. 2010, 18(7): 1491-1497.

【6】Thierry B D, Yves A, Laherrere J M. Preflight calibration of the POLDER instrument [J]. Proceedings of SPIE. 1995, 2553: 218-231.

【7】López-Alonso J M, Alda J. Bad pixel identification by means of principal components analysis [J]. Optical Engineering. 2002, 41(9): 2152-2157.

【8】Li L, Yang Y Y, Cao P, et al. Automatic discrimination between dusts and digs for large fine optics [J]. High Power Laser and Particle Beams. 2014, 26(1): 012001.
李璐, 杨甬英, 曹频, 等. 大口径光学元件表面灰尘与麻点自动判别 [J]. 强激光与粒子束. 2014, 26(1): 012001.

【9】Li L P, Yang J, Liu C Y, et al. An impulse rejection filter based on moving window for artifact removal in R-R interval series [J]. Journal of Optoelectronics·Laser. 2010, 21(9): 1426-1430.
李丽萍, 杨静, 刘澄玉, 等. 滑动窗口脉冲抑制滤波用于心电间期序列坏点去除 [J]. 光电子·激光. 2010, 21(9): 1426-1430.

【10】Yang S J. A new method of removing singular points in dynamic testing data: absolute mean value method and its application study [J]. China Measurement Technology. 2006, 32(1): 47-49, 82.
杨世杰. 动态测试数据中坏点处理的一种新方法: 绝对均值法及应用研究 [J]. 中国测试技术. 2006, 32(1): 47-49, 82.

【11】Zhang M M, Meng B H, Qian H H, et al. Research on correction method of stray light in directional polarization camera [J]. Acta Optica Sinica. 2017, 37(11): 1112003.
张苗苗, 孟炳寰, 钱鸿鹄, 等. 多角度偏振成像仪杂散光校正方法研究 [J]. 光学学报. 2017, 37(11): 1112003.

【12】Kang Q, Yuan Y L, Li J J, et al. Effect of divergence angle of polarization calibration source on DPC polarization calibration: analysis and validation [J]. Journal of Remote Sensing. 2018, 22(2): 203-210.
康晴, 袁银麟, 李健军, 等. 光源发散角对DPC偏振定标的影响分析及验证 [J]. 遥感学报. 2018, 22(2): 203-210.

【13】Yuan Y L, Zheng X B, Wu H Y, et al. Uniformity research of integrating spheres reference light source with large exit aperture [J]. Acta Photonica Sinica. 2015, 44(4): 0422003.
袁银麟, 郑小兵, 吴浩宇, 等. 大口径积分球参考光源的均匀性研究 [J]. 光子学报. 2015, 44(4): 0422003.

【14】Li Y F, Li G Z, Gu S H, et al. Image mosaic algorithm based on area blocking and SIFT [J]. Optics and Precision Engineering. 2016, 24(5): 1197-1205.
李玉峰, 李广泽, 谷绍湖, 等. 基于区域分块与尺度不变特征变换的图像拼接算法 [J]. 光学精密工程. 2016, 24(5): 1197-1205.

【15】Huang F Y, Li G, He Y Q, et al. Algorithm for laser spot precise locating in omni-directional laser detecting system [J]. Laser & Infrared. 2010, 40(11): 1224-1228.
黄富瑜, 李刚, 何永强, 等. 全向激光探测系统中光斑精确定位方法研究 [J]. 激光与红外. 2010, 40(11): 1224-1228.

【16】Han T, Goodenough D G, Dyk A, et al. Detection and correction of abnormal pixels in Hyperion images . [C]//IEEE International Geoscience and Remote Sensing Symposium, June 24-28, 2002, Toronto, Ontario, Canada. New York: IEEE. 2002, 1327-1330.

【17】Qian F, Jia J J, Zhang L, et al. Defective pixel correction of spot-detecting camera in satellite-to-ground laser communication ATP system [J]. Chinese Journal of Lasers. 2014, 41(5): 0505007.
钱锋, 贾建军, 张亮, 等. 星地激光通信ATP系统探测相机的坏点校正 [J]. 中国激光. 2014, 41(5): 0505007.

【18】Xie P, Wu H Y, Zheng X B, et al. Automatic directional radiometric testing system for large aperture integrating spheres [J]. Optics and Precision Engineering. 2010, 18(9): 1943-1950.
谢萍, 吴浩宇, 郑小兵, 等. 大口径积分球方向辐射特性自动测试系统 [J]. 光学精密工程. 2010, 18(9): 1943-1950.

【19】Yuan Y L, Xu J, Zhai W C, et al. Design and test of a spectrally tunable integrating sphere reference light source with large exit aperture [J]. Acta Optica Sinica. 2013, 33(7): 0712004.
袁银麟, 徐骏, 翟文超, 等. 大孔径可调光谱积分球参考光源研制和检测 [J]. 光学学报. 2013, 33(7): 0712004.

【20】Kang Q. Research on system-level radiometric and polarized calibration methods in laboratory of polarization remote sensors [D]. Hefei: University of Science and Technology of China. 2018, 63-84.
康晴. 偏振遥感器实验室系统级辐射与偏振定标方法研究 [D]. 合肥: 中国科学技术大学. 2018, 63-84.

引用该论文

Weng Jianwen,Yuan Yinlin,Zheng Xiaobing,Kang Qing,Tu Bihai,Xia Maopeng,Hong Jin. Method for Measuring Response Non-Uniformity of Polarization Channels in Directional Polarization Camera[J]. Acta Optica Sinica, 2020, 40(8): 0828001

翁建文,袁银麟,郑小兵,康晴,涂碧海,夏茂鹏,洪津. 多角度偏振成像仪偏振通道响应非一致性测量方法[J]. 光学学报, 2020, 40(8): 0828001

被引情况

【1】姚萍萍,许孙龙,涂碧海,于新宇,崔珊珊,骆冬根,洪津. 星载面阵CCD性能测试系统设计及温度影响分析. 中国激光, 2020, 47(9): 910001--1

【2】崔文煜,黄文娟,易维宁. 分束型同时偏振成像系统定标及预处理方法. 光学学报, 2020, 40(20): 2011002--1

【3】李朕阳,刘振海,邹鹏,朱双双,雷雪枫,陶菲,提汝芳,宋茂新,洪津. 星载偏振扫描仪发射前定标及地面验证实验. 光学学报, 2021, 41(3): 312002--1