Prelaunch characteristics of the Moderate Resolution Imaging Spectroradiometer (MODIS) on EOS-AM1
Prelaunch characteristics of the Moderate Resolution Imaging Spectroradiometer (MODIS) on EOS-AM1
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DOI：
10.1109/36.700993
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发表时间：
1998-07-01
影响因子：
8.2
通讯作者：
Salomonson, VV
中科院分区：
文献类型：
--
作者：
Barnes, WL;Pagano, TS;Salomonson, VV
中分辨率成像光谱仪(MODIS)具有36个波段和0.25、0.5和1.0公里的最低几何瞬时视场(GIFOV)，已经完成了系统级测试，并已集成到定于1998年发射的地球观测系统(EOS)-AM1航天器上。MODIS开发商雷神圣巴巴拉遥感(SBRS)、Goleta，ck进行了广泛的表征和校准测量，证明该系统满足或超过了NASA的大多数苛刻要求。基于这一展示的能力，MODIS科学团队，一个由28名陆地、海洋、大气和定标遥感科学家组成的国际小组，已经开始提供算法，这些算法将在发射后常规计算42个MODIS标准数据产品，这些产品的范围从大气气溶胶、积雪、陆地和水面温度到叶面积指数、海洋叶绿素浓度和海冰范围，仅举几例。科学团队的描述，包括成员的研究兴趣和对他们的MODIS算法的描述，可以在MODIS主页(http://Itpwww.gsfc.nasa.gov/MODIS/MODIS.html).The上找到。MODIS系统级测试包括在环境和热真空环境中进行足够的测量，以证明符合规范并能够在发射后实施辐射校准算法。后者将包括计算以考虑响应对扫描角度、响应对温度和响应线性度的变化。系统级测试还包括机载校准系统的性能验证，包括太阳漫射器稳定性监测器(SDSM)、黑体(BB)和光谱辐射校准组件(SRCA)，这将使发射后监测MODIS的性能，这些子系统的描述也在MODIS主页上。
The Moderate Resolution Imaging Spectroradiometer (MODIS), with 36 bands and 0.25-, 0.5-, and 1.0-km geometric instantaneous-fields-of-view (GIFOV's) at nadir, has completed system level testing and has been integrated onto the Earth Observing System (EOS)-AM1 spacecraft, which is slated for launch in 1998,Raytheon Santa Barbara Remote Sensing (SBRS), Goleta, Ck, the MODIS developer, has performed extensive characterization and calibration measurements that have demonstrated a system that meets or exceeds most of NASA's demanding requirements. Based on this demonstrated capability, the MODIS Science Team, an international group of 28 land, ocean, atmosphere, and calibration remote-sensing scientists, has commenced delivery of algorithms that will routinely calculate 42 MODIS standard data products postlaunch, These products range from atmospheric aerosols, snow cover, and land and water surface temperature to leaf area index, ocean chlorophyll concentration, and sea ice extent, to name just a few. A description of the Science Team, including members' research interests and descriptions of their MODIS algorithms, can be found at the MODIS homepage (http://Itpwww.gsfc.nasa.gov/MODIS/MODIS.html).The MODIS system level testing included sufficient measurements in both ambient and thermal-vacuum environments to both demonstrate specification compliance and enable postlaunch implementation of radiometric calibration algorithms. The latter will include calculations to account for changes in response versus scan angle, response versus temperature, and response linearity. The system level tests also included performance verification of the onboard calibration systems, including the solar diffuser stability monitor (SDSM), the blackbody (BB), and the spectral radiometric calibration assembly (SRCA), which will enable monitoring of MODIS performance postlaunch, Descriptions of these subsystems are also on the MODIS homepage.