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大气订正
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  atmospheric correction
     Atmospheric Correction of CBERS-02 CCD Image
     CBERS-02卫星CCD图像的大气订正
短句来源
     Atmospheric Correction for AMTIS Based on BRDF Loop and MODTRAN4. 1
     AMTIS大气订正算法——基于MODTRAN4.1与BRDF大气订正
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     A feasible method on atmospheric correction to channel 1 and 2 for MODIS
     MODIS通道1和通道2大气订正的一种快速实用方法
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     A New Method for Atmospheric Correction: BRDF─ Atmospheric Correction Loop
     一种大气订正的方法:BRDF──大气订正
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     Discussion of the algorithm for the atmospheric correction of satellite remote sensing in the 6S model
     对卫星遥感大气订正6S模型中的算法的探讨
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  atmosphere correction
     Using TERRA/MODIS data in some typical vegetation regions during plant growth period in 2003 and vegetation type data,the spatial and temporal characteristics of MODIS/NDVI and MODIS/EVI in Northwest China and the influences of atmosphere correction on the two vegetation indexes were analyzed in this paper for comparing the differences between NDVI and EVI.
     为了了解西北地区MODIS/NDVI和MODS/EVI 2种植被指数的特点,利用2003年植被生长期TERRA/MODIS资料和西北地区植被类型数据,分析了西北地区MODIS/NDVI和MODIS/EVI空间分布特征和不同类型植被随时间变化特征,比较了大气订正对NDVI和EVI的影响。
短句来源
     the values of NDVI are smaller than those of EVI before atmosphere correction; while after the correction,values of NDVI are larger than those of EVI in most regions.
     大气订正使NDVI增大,EVI减小,大气订正后NDVI值普遍大于EVI值。
短句来源
     Some representative MODIS data are picked up and atmosphere correction is done by using 6S model. The influence of sand dust aerosol on VI in Northwest China is analysed.
     选取扬沙—浮尘天气发生中、后的对地观测卫星EOS-MODIS数据,利用6S辐射传输模式对该卫星资料进行大气订正,分析了沙尘气溶胶对沙尘多发区的西北地区植被指数(VI)遥感的影响。
短句来源
     In addition,the influence of atmosphere on NDVI and EVI was obvious,and atmosphere correction made NDVI values increase and EVI values reduce;
     不同类型植被NDVI和EVI变化特征一致。 大气对NDVI和EVI的影响较大,大气订正前许多地区NDVI值小于EVI值。
短句来源
     In this way, after atmosphere correction the signal-to-noise ratio characteristic of OMIS images can reflect that of the OMIS instrument sufficiently.
     这样在大气订正后 ,图像的信噪比性能充分反映出遥感仪器的信噪比性能。
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  “大气订正”译为未确定词的双语例句
     The reflectance of near-infrared band ρ 2 and blue band ρ 3 are falling,but the red spectral band ρ 1 is rising by operating atmosphere corrected.
     经过臭氧、水汽、气溶胶等散射吸收订正 ,对于一定范围的反射率 ,大气订正使植被区红光波段反射率ρ1 降低、近红外波段反射率 ρ2 增加 ,蓝光波段反射率 ρ3降低 ;
短句来源
     After cloud removing and degradation correcting processing, atmospheric corrections are carried out to NOAA/AVHRR visible and near infrared reflectance and NDVI data using the 6S model, and then bi directional reflectance corrections are carried out.
     在除云处理和NOAA 1 4 /AVHRR衰减校准的基础上 ,利用 6S模式对NOAA 1 4 /AVHRR可见光和近红外反射率及NDVI资料进行了大气订正 ,并利用Roujean和Rahman模式在大气订正后进行了双向反射订正。
短句来源
     I NDV is higher and I EV is lower after atmosphere is corrected, the largest value of variety are 0.104 and 0.005.
     大气订正后 ,归一化植被指数INDV较大气订正前有所增加 ,增加的最大值为 0 .1 0 4 ,抗土壤 大气植被指数IEV值略有减小 ,减小的最大值为 0 .0 0 5
短句来源
     A CIRRUS CLOUD CORRECTION SCHEME FOR RETRIEVAL OF SEA SURFACE TEMPERATURE BY SATELLITE IR MEWASUREMENTS
     卫星红外反演洋面温度的卷云大气订正方案
短句来源
     In this paper we will discuss two uses of BRDFs in remote sensing: (1) in determining the clear sky top of the atmosphere (TOA) albedo, (2) in quantifying the effect of the BRDF on the adjacency pointspread function and on atmospheric corrections.
     该文讨论二向性反射分布函数(BRDF)在遥感领域中两方面的应用:(1)晴天大气层顶部的反照率的确定,(2)二向性反射分布函数对邻近象元点扩散函数和大气订正的影响。
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  atmospheric correction
An efficient approach to the atmospheric correction of satellite information is developed.
      
Substantial interannual variability in the errors of the standard atmospheric correction algorithm resulting in an underestimation of the shortwave radiances were revealed.
      
For the turbid atmosphere with strong-ly absorbing aerosol, the Homogeneous Model and the Two-layer Model are not suitable for atmospheric correction application.
      
Atmospheric effect makes NDVI smaller, and atmospheric correction has the tendency of increasing NDVI values.
      
Finally, a simplified model function of the atmospheric contribution is derived, as a first step to develop an atmospheric correction method for passive polarimetry of the wind over sea.
      
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  atmosphere correction
We aimed at thoroughly establishing the soundness of our atmosphere correction and vegetation index compositing strategies.
      


The e mospheric effects of tlhe normalized difference vegetation index (NDVI), which measured by the NOAA-AVHRR, were analysed in detail. The effect of the water vapor and the aerosols were calculated for different atmospheric models, the influence of the solar zenith angle and satellite viewing angle also illustrated. The correction of different atmospheric constituents were shown and the correction scheme in the ecological environmental monitoring in China were discussed.

本文对利用NOAA-AVHRR探测地面植被指数时大气的影响作了详细讨论,并对不同水汽含量与气溶胶情况下的大气影响进行了计算,对于大气订正方案作了研讨,对于在我国环境生态监测中如何进行大气订正的方案进行了探讨。

It is necessary for amospheric correction, especially for aerosol extinctioncorrection, in processing satellite sensing information, for example, in remote sensing ofthe vegetation index on a clear day. The optical depth of aerosol or spectral transmissivityis an important parameter characteristic of atmospheric aerosol extinction ability. Therehas been no systematic space-time observation to the optical depth of aerosol in China upto now, for the content and space-time variations of atmosphyeric aerosol are...

It is necessary for amospheric correction, especially for aerosol extinctioncorrection, in processing satellite sensing information, for example, in remote sensing ofthe vegetation index on a clear day. The optical depth of aerosol or spectral transmissivityis an important parameter characteristic of atmospheric aerosol extinction ability. Therehas been no systematic space-time observation to the optical depth of aerosol in China upto now, for the content and space-time variations of atmosphyeric aerosol are considerably complicated. In order to correct the real-time optical depth of atmospheric aerosol wesuggest a computational method of the aerosol optical depth by "st.ng daily meteorolgicalvisibility data on the basis of Strum's work[1]. this paper we discuss the following pointsof this method:1. It is possible to establish a reasonable relationship between the aerosol opticaldepth and the. meteorolgical visibility by using the profiles of aerosol number density. Theprofiles are quoted from Elterman's work.2. The principal Work steps of the method are as follows: frstly, compute the aerosoloptical depth of vertical layer up to atmospheric top from daily meteorological visisbilities of Station networks in China. Secondly, divide the optical depth fields into some areas bymaking use of system cluster analysis. Finally, compute the region mean of optical depthproviding satellite correction of the region.3. We made an effect test to a severe sandstorm process in North China from 18-20April, 1980. The result was satisfying. The high value region of optical depth basically coincided.with the sandstorm region. The o.ptical depth region strengthened and extendedcorrespondingly along with the sandstorm region.4. This:method is simple, convenient and feasible for real-time atmospheric correction on a clear day. The correcting time by microcomputer is only about ten minutes.5. There are some problems to be improved. Firstly, angstrom index β(or α) in computing formula should be selected exactly according to the patterns of vegetation region.Secondly, Junge aerosol size distribution is one of the theoretical basis of the method. Thecomputing formula of the method must be improved for non-Junge size distribution.Thirdly we must introduce moisture correction to meteorolgical visisbility before opticaldepth computation, for meteorological visbility is closely related to the atmospheric moisture Finally the meteorological visibility must be reduced to sea level when the sea level elevation of meteorological station is above 200m

介绍了一种方法,它借鉴Strum[1]的工作利用常规气象能见度资料计算出气溶胶光学厚度值,并且使用系统聚类法进行全国光学厚度场的归类划区、对于晴空卫星地面遥感进行实时大气订正,这种方法是可行和实用的。选用一次强风沙过程对此法作检验,效果相当理想。

Changchun Jingyuetan Remote Sensing Test Site of Chinese Academy ofSciences is an opening experiment research site of remote sensing.For doing highquality space-borne quantitative remote sensing,we have to do atmospheric correc-tion. For doing this,the understanding of atmospheric optical characteristic over thesite is necessary.In this paper,the spectral extinction and the size distribution ofaerosol are derived and retreived from the data of solar direct spectral radiance ob-servation in 1990(volcanic quiet...

Changchun Jingyuetan Remote Sensing Test Site of Chinese Academy ofSciences is an opening experiment research site of remote sensing.For doing highquality space-borne quantitative remote sensing,we have to do atmospheric correc-tion. For doing this,the understanding of atmospheric optical characteristic over thesite is necessary.In this paper,the spectral extinction and the size distribution ofaerosol are derived and retreived from the data of solar direct spectral radiance ob-servation in 1990(volcanic quiet period)and 1991(volcanic active period).Owingto these two years related to the different volcanic activities(quiet and active),the results would provide a foundamental basis of atmospheric correction of remotesensing over that area,also they would be representative of the mid-latitude regionof Northern hemisphere.

中国科学院长春净月潭遥感试验场是对国内外开放的进行遥感实验研究的场地。为了高质量地进行对地定量遥感,必须了解该场上空大气气溶胶的光学特性,以便进行有效的大气订正。另一方面大气气溶胶本身也是遥感的对象。为提供这一背景性信息,本工作利用试验场所装备的太阳直接辐照光谱仪在1990年(无火山活动期)与1991年(强火山爆发期)两年进行的观测,经分析整理和反演推导,获得该站上空气溶胶引起的光学厚度(消光)谱和由此反演得到的气溶胶粒子谱分布。由于两年分别代表火山平静和活动期的情况,所得结果将为该地区遥感大气订正提供依据,同时可供其它北半球中纬地区参考。

 
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