Polarized properties of typical surface types over China based on the multi-angular polarized remote sensing measurements

	Polarized properties of typical surface types over China based on the multi-angular polarized remote sensing measurements
	Xiang Kun-Sheng 1; Cheng Tian-Hai 1; Gu Xing-Fa 1; Guo Hong 1; Chen Hao 1; Wang Ying 1; Wei Xi 1; Bao Fang-Wen 1
刊名	ACTA PHYSICA SINICA
	2015
卷号	64 期号:22 页码:4657-4664
关键词	multi-angle polarization polarization reflectance Nadal model remote sensing inversion
通讯作者	Cheng, TH (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing, Beijing 100101, Peoples R China.
英文摘要	The surface polarized reflectance is able to fully reflect the physical characteristics of surface, such as vegetation classification, plant biomass estimation, leaf angle distribution and surface water content. The bidirectional polarization distribution function is a useful tool for quantitatively describing the surface polarized reflectance. The multi-angle polarized remote sensing reveals a significant advantage in capturing the radiation and polarization information. The polarization and directionality of the earth reflectance (POLDER) instrument is the only sensor which has provided a long-term trend of polarized measurements. Its combination of multi-spectral, polarization and multi-angle observations has considerable capability for retrieving ocean, land, cloud and aerosol properties. Until now, data obtained from POLDER has been widely used to study various surface bidirectional polarized reflectance models, especially Nadal model. However, parameters of Nadal model reveal a low accuracy in China region. In this study, the parameters of Nadal model suitable for China region are obtained and analyzed based on the POLDER-2 polarized reflectance data. Based on the modified parameters of Nadal model, polarized reflectance under different surface types is further analyzed. Our results show that the polarized reflectance retrieved from modified parameters of Nadal model reveals better correlation with the POLDER-2 products than the polarized reflectance from Nadal official parameters under different surface types. The polarization properties of three typical surfaces (forest, grassland and desert) are further investigated and reveal that 1) different surface polarized reflectances decrease with the increase of the scattering angle, and the polarized reflectance of the same object decreases as the normalized difference vegetation index increases; 2) significant discrepancies exist between the polarized reflectances of different surfaces, the polarized reflectance of forest is the lowest in the three surface types, then that of grass is the second lowest, and desert reveal the largest value (about twice that of forest), 3) the discrepancies of polarized reflectance between different surfaces have an increasing trend as satellite view zenith angle increases. This study will provide a priori knowledge for the detection of surface polarization properties and aerosol parameters based on multi-angle polarization remote sensing data, and also establish a good foundation for the quantitative applications of GF-5 satellite multi-angle polarization imager to be launched soon in China.
研究领域[WOS]	Physics, Multidisciplinary
收录类别	SCI ; EI
语种	中文
WOS记录号	WOS:000368824600042
内容类型	期刊论文
源URL	[http://ir.ceode.ac.cn/handle/183411/38061]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1.[Xiang Kun-Sheng 2.Cheng Tian-Hai 3.Gu Xing-Fa 4.Guo Hong 5.Chen Hao 6.Wang Ying 7.Wei Xi 8.Bao Fang-Wen] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing, Beijing 100101, Peoples R China 9.[Xiang Kun-Sheng 10.Wei Xi
推荐引用方式 GB/T 7714	Xiang Kun-Sheng,Cheng Tian-Hai,Gu Xing-Fa,et al. Polarized properties of typical surface types over China based on the multi-angular polarized remote sensing measurements[J]. ACTA PHYSICA SINICA,2015,64(22):4657-4664.
APA	Xiang Kun-Sheng.,Cheng Tian-Hai.,Gu Xing-Fa.,Guo Hong.,Chen Hao.,...&Bao Fang-Wen.(2015).Polarized properties of typical surface types over China based on the multi-angular polarized remote sensing measurements.ACTA PHYSICA SINICA,64(22),4657-4664.
MLA	Xiang Kun-Sheng,et al."Polarized properties of typical surface types over China based on the multi-angular polarized remote sensing measurements".ACTA PHYSICA SINICA 64.22(2015):4657-4664.