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	Estimation of direct, diffuse, and total FPARs from Landsat surface reflectance data and ground-based estimates over six FLUXNET sites SCI/SSCI论文 OAI收割 2015 作者: Li W. J.; Fang, H. L. 收藏 \| 浏览/下载：30/0 \| 提交时间：2015/12/09 direct FPAR diffuse FPAR total FPAR APAR Landsat TM photosynthetically active radiation gross primary productivity canopy reflectance radiance data time-series remote estimation vegetation index transfer model sail model modis data
	A Synergetic Algorithm for Mid-Morning Land Surface Soil and Vegetation Temperatures Estimation Using MSG-SEVIRI Products and TERRA-MODIS Products SCI/SSCI论文 OAI收割 2014 Zhao W.; Li A. N.; Bian J. H.; Jin H. A.; Zhang Z. J. 收藏 \| 浏览/下载：49/0 \| 提交时间：2014/12/24 MODIS component temperature SEVIRI split-window algorithm thermal infrared radiance remotely-sensed data urban heat islands component temperatures air-temperature regional evapotranspiration emissivity retrieval msg1-seviri data water content
	Angular effect of MODIS emissivity products and its application to the split-window algorithm SCI/SSCI论文 OAI收割 2011 Ren H. Z.; Yan G. J.; Chen L.; Li Z. L. 收藏 \| 浏览/下载：27/0 \| 提交时间：2012/06/08 MODIS emissivity Angular effects Split-window algorithm land-surface-temperature canopy directional emissivity scanner data retrieval model validation reflectance separation radiance sensors
	Angular effect of MODIS emissivity products and its application to the split-window algorithm SCI/SSCI论文 OAI收割 2011 作者: Ren H. Z.; Yan G. J.; Chen L.; Li Z. L. \| 收藏 \| 浏览/下载：28/0 \| 提交时间：2012/06/08 Modis Emissivity Angular Effects Split-window Algorithm Land-surface-temperature Canopy Directional Emissivity Scanner Data Retrieval Model Validation Reflectance Separation Radiance Sensors
	Research on the laboratory radiometric calibration of the thermal imager (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者: Wang J.; Liu Y.; Liu Y.; Liu Y.; Sun Q. 收藏 \| 浏览/下载：26/0 \| 提交时间：2013/03/25 The radiometric calibration of the thermal imager was investigated to build the relationship between the input radiance and the digital output to realize the temperature measurement. The radiometric calibration was implemented in the State Key Laboratory of Applied Optics. A standard black body source was served as radiation source. The response of the thermal imager to the input radiance was tested for different gains. The experimental results show that the average grey level of the output imaging is linear dependence of the input radiance. Because the radiance in the receiving wave range of the thermal imager is linear with the black body's temperature based on Planck's law of radiation the average grey level of the output image is also linear with the black body's temperature after fitting a curve to the experiment data points. Then the relationship of the response and the gain was studied when the black body's temperature kept constant. The preliminary analysis of calibration data shows that the response of the thermal imager is linear and the average grey value of the image is directly proportion to the gain. According to the experimental results the reference gains and the dynamic range of temperature measurement were obtained. Finally the uncertainty influencing the calibration results was analyzed the analysis shows the maximal uncertainty is 5.2% which can meet the calibration requirement less than 10%. 2010 Copyright SPIE - The International Society for Optical Engineering.
	Development and radiance calibration of three-waveband camera (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photonics and Optoelectronics, SOPO 2010, June 19, 2010 - June 21, 2010, Chengdu, China 作者: Wang J.; Liu Y.; Liu Y.; Sun Q.; Liu Y. 收藏 \| 浏览/下载：29/0 \| 提交时间：2013/03/25 An imaging system with three-waveband sharing one lens and an area CCD was developed. By rotating different filters into the beam path the required waveband was selected. The optical system which can image in ultraviolet visible and near infrared region was designed and the signal collecting system was integrated. The optical design and system integration have some advantages such as low cost small size and light in weight. To obtain a high imaging quality the radiation calibration is carried out in order to establish the relation between the average grey level of output image and the input radiance from the integrating sphere. According to the calibration data in experiments the radiation dynamic range and the best working point of the system are determined. The experiment result shows that the dynamic range of the image system is maximal when the exposure time is 8ms in ultraviolet 0.5ms in visible and 0.125ms in near infrared region. 2010 IEEE.
	Level 0 and level 1 data processing for a type of hyper-spectral imager (EI CONFERENCE) 会议论文 OAI收割 2009 International Conference on Optical Instruments and Technology, OIT 2009, October 19, 2009 - October 21, 2009, Shanghai, China Li X.; Yan C. 收藏 \| 浏览/下载：74/0 \| 提交时间：2013/03/25 Hyper-spectral imaging (HSI) is a kind of optical remote sensor that can simultaneously obtain spatial and spectral information of ground targets. We are now designing a data processing system for a type of space-borne push-broom HSI then it performs radiometric and spectral calibration based on the ground calibration results and onboard calibration collection. The detailed algorithms for bad pixel replacement which has 128 spectral channels covering the spectral range from 400nm to 2500nm. With its large amount of spectral channels radiometric and spectral calibration were presented. After processing the HSI collects large volume of spectral imaging data need to be efficiently and accurately processed and calibrated. In this paper the digital numbers downlinked from the spacecraft can be converted into at-sensor absolute spectral radiance of ground targets the detailed Level 0 and Level 1 data processing steps for the HSI were presented. The Level 0 processing refers to a set of tasks performed on the data downlinked from the spacecraft thus providing accurate quantified spectral imaging data for various applications. 2009 SPIE. including decoding to extract science data separating the science data into files corresponding to different tasks (e.g. ground imaging dark imaging and onboard calibration) checking data integrity and instrument settings data format conversion and Level 0 files creation. The Level 1 processing performs several steps on Level 0 data. Firstly it corrects the image artifacts (mostly the SWIR smear effect) subtracts the dark background and performs the bad pixel replacement according to the prelaunch measurement
	A new approach for retrieving precipitable water from ATSR2 split-window channel data over land area SCI/SSCI论文 OAI收割 2003 Li Z. L.; Jia L.; Su Z. B.; Wan Z. M.; Zhang R. H. 收藏 \| 浏览/下载：33/0 \| 提交时间：2012/06/08 avhrr data radiance measurements surface temperatures noaa satellite solar spectrum vapor content tiros-n absorption emissivity oceans
	On the separate retrieval of soil and vegetation temperatures from ATSR data 期刊论文 OAI收割 SCIENCE IN CHINA SERIES D-EARTH SCIENCES, 2001, 卷号: 44, 期号: 2, 页码: 97-111 作者: Li, ZL; Stoll, MP; Zhang, RH; Jia, L; Su, ZB \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2019/09/26 Atsr Data Soil And Vegetation Temperature Atmospheric Corrections Anisotropic Radiance