HY-1 CCD宽波段水色要素反演算法
Inverse algorithms of ocean constituents for HY-1/CCD broadband data
-
摘要: 利用2003年春季黄海、东海区现场实测数据,建立了HY1卫星4波段CCD成像仪水色要素反演算法.由于HY1CCD的宽波段特性阻碍了黄色物质的反演,因此反演的水色要素仅包括水体表层的总悬浮物、悬浮泥沙(SS)以及叶绿素a的浓度.现场遥感反射率光谱由ASD地物波谱仪测量,对于叶绿素a的浓度利用现场萃取荧光法测量,总悬浮物、悬浮泥沙由实验室滤膜称重法获得.反演算法的拟合相关系数均大于0.88,平均相对误差在40%以下.对反演算法进行了误差灵敏度分析,结果表明对于总悬浮物、悬浮泥沙和低浊度水体中的叶绿素a的浓度反演算法能够满足日常的业务运行要求,但是对于高浊度水体中叶绿素a的浓度反演算法对某个波段组合比较敏感,仍需要进一步探讨.Abstract: Inverse algorithms of ocean constituents for 4 bands HY-1/CCD imager were developed using in-situ data which acquired in the Huanghai Sea and the East China Sea in the spring time of 2003.There trieved ocean constituents include total suspended matter(TSM),suspended sediment(SS) and chlorophylla(Chl a) of surface water,broadband characterist ics of CCD baffled the inversion of colored dissolved organic matter(CDOM).In-situ remote sensing reflectance spectra were acquired using ASD spect roradiometer,standard fluorometric method was used for extracting Chl a concentration in-situ,and filt erpad samples were brought back to the laboratory for analysis of TSM and SS.For these constituents retrieval,correlation coefficient values are over 0.88 and average relative error values are under 40%.The error sensitivity of the inverse algorithms is also tested,it shows that the inverse algorithms of TSM,SS and Chl a concentration in the middle low turbid water can meet daily operation,but it needs furt her research for the retrieval algorithm of Chl a concentration in the high turbid water.
-
Key words:
- H-Y1/CCD /
- inverse algorithm /
- total suspended matter /
- suspended sand /
- chlorophyll a
-
SOO Chin Liew, AIK Song Chia, KIM Hwa Lim, et al. Modeling the reflectance spectra of tropical coastal waters[A]. SPIE Proc 4488B-Ocean Color Remote Sensing and Applications:Part of SPIE's International Symposium on Optical Science and Technology:Vol.4 488[C]. San Diego, California, USA. 2001. 248-255. SATHYENDRANATH S, PRIEUR L, MOREL A. A three component model of ocean color and its application to remote sensing of phytoplankton pigments in coastal waters [J]. Int J Remote Sens, 1989, 10:1 373-1 394. GORDON H R. MODIS Normalized Water-leaving Radiance Algorithm Theoretical Basic Document:version 4[M]. NASA Contract Number NAS503163,1999. O'REILLY J E, MARITORENA S, MITCHELL B G, et al. Ocean color chlorophyll algorithms for SeaWiFS [J]. J Geophys Res,1998, 103C:24 937-24 953. HOVIS W A. The Nimbus-7 coastal zone color scanner [J]. Oceanography from Space, 1981, 22:215-226. MARKHAM B L, BARKER J L. Spectral characterization of the LANDSAT thematic mapper sensor [J]. International Journal of Remote Sensing, 1985, 6:697-716. TASSAN S. Evaluation of the potential of the thematic mapper for marine application [J]. International Journal of Remote Sensing,1987, 8:1 455-1 487. GORDON H R, MOREL A. Remote assessment of ocean color for interpretation of satellite visible imagery:a review [A]. Lecture Notes on Coastal and Estuarine Studies[M]. New York:Springer-verlag, 1983. FARGION G S, MUELLER J L. Ocean Optics Protocols for Satellite Ocean Color Sensor Validation:Revision 2[M]. Maryland:Goddard Space Flight Space Center, 2000. 唐军武,王晓梅,宋庆君,等.黄东海二类水体水色要素统计反演模式[J].海洋科学进展,2004,22(增刊):1-7. 唐军武,田国良,汪小勇,等.水体光谱测量与分析:Ⅰ.水面以上测量法[J].遥感学报,2004,8(1):37-44. TANG Jun-wu, WANG Xiao-mei, SONG Qing-jun, et al. The statistic inversion algorithms of water constituents for the Huanghai Sea and the East China Sea [J]. Acta Oceanologica Sinica, 2004, 23(4):617-616. SATHYENDRANATH S. Detection of phytoplankton pigments from ocean colour:improved algorithms[J]. Appl Optics, 1994, 3:1081-1 089. DOERFFER F, FISCHER J. Concentrations of chlorophyll, suspended matter, and gelbstoff in case waters derived from satellite coastal zone scanner data with inverse modeling methods[J]. J Geophys Res, 1994, 99:7 457-7 466. MOBLEY C D, GENTILI B, GORDON H R, et al. Comparison of numerical models for computing underwater light fields [J]. Appl Optics, 1999, 38:3 831-3 843. AHN Yu-Hwan, MOON Jeong-Eun, SONIA Gallegos. Development of suspended particulate matter algorithms for ocean color remote sensing [J]. Korean J of Remote Sens, 2001, 17(4):285-295. 马超飞,唐军武,王其茂,等.黄东海区总悬浮物对HY-1 CCD数据叶绿素浓度反演的影响[J].海洋科学进展,2004,22(增刊):115-120. 唐军武.模块化二类水体相关遥感信息提取技术.国家"863"计划资源环境领域海洋监测技术主题课题中期评估工作报告(内部资料),2003.
点击查看大图
计量
- 文章访问数: 897
- HTML全文浏览量: 14
- PDF下载量: 1389
- 被引次数: 0