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首页> 外文期刊>International journal of remote sensing >On-orbit NOAA-20 VIIRS solar diffuser bidirectional reflectance distribution function and screen transmittance characterization using yaw manoeuvres and regular on-orbit SDSM data
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On-orbit NOAA-20 VIIRS solar diffuser bidirectional reflectance distribution function and screen transmittance characterization using yaw manoeuvres and regular on-orbit SDSM data

机译：轨道NOAA-20 VIIRS太阳漫射器双向反射率分布函数和屏幕透射率使用偏航操纵和常规的轨道SDSM数据

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摘要

On-orbit radiometric calibration of the Visible Infrared Imaging Radiometer Suite (VIIRS) sensor onboard the National Oceanic and Atmospheric Administration's (NOAA) NOAA-20 satellite is dependent on Solar Diffuser (SD) and Solar Diffuser Stability Monitor (SDSM) observations for the Reflective Solar Bands (RSBs). The time-dependent degradation of the SD Bidirectional Reflectance Distribution Function (BRDF) (calledH-factor) is measured by the SDSM. To reduce direct illumination from the Sun, SD and SDSM have two independent screens called SD Screen (SDS) and SDSM Sun view screen. Once the instrument is on-orbit, the product of the SD BRDF and SDS transmittance can only be measured by VIIRS and SDSM detectors through the Rotating Telescope Assembly (RTA) and SDSM SD viewport, respectively. Using pre-launch parameter tables, the initialH-factor trends showed abnormal oscillations. To validate the functionality of the pre-launch tables, the NOAA-20 VIIRS spacecraft performed 15 yaw manoeuvres on 25 January and 26 January 2018 as a part of post-launch tests. During the yaw manoeuvres, on-orbit SD and SDSM data were collected and used to characterize the SD screen transmittance functions with BRDFs and the SDSM Sun view screen transmittance functions. On-orbit estimated SD/SDSM BRDFs and SDSM Sun screen transmittance functions showed some differences from the pre-launch version, especially with the SDSM Sun view screen transmittance function. This problem was not resolved by applying the initial yaw manoeuvre-derived table. As an alternative approach, NOAA VIIRS team applied a methodology to add fine features in the SDSM Sun transmittance function from the one-year regular on-orbit SDSM collections to cover a full operational range of the solar azimuth angle in the SDSM Sun viewport. After applying additional SDSM detector gain corrections, the yaw manoeuvre and on-orbit regular SDSM data points are aligned that reduced abnormally large degradations in SDSM detector 6, 7, and 8. Finally, 1% levelH-factor oscillations are reduced to 0.2% level. Corresponding SDF-factors, scaling calibration coefficients, are calculated and deliver to the NOAA's Interface Data Processing Segment (IDPS) to generate the official VIIRS Science Data Record (SDR) products.
机译：可见红外成像辐射仪套件（VIIRS）传感器的轨道辐射校准国家海洋和大气管理（NOAA）NOAA-20卫星依赖于太阳漫射器（SD）和太阳漫射器稳定性监测器（SDSM）对反射性的观察结果太阳能带（RSB）。通过SDSM测量SD双向反射率分布函数（BRDF）（BRDF）（称为H系数）的时间相关的劣化。为了减少Sun的直接照明，SD和SDSM有两个名为SD屏幕（SDS）和SDSM Sun View屏幕的独立屏幕。一旦仪器在轨道上，SD BRDF和SDS透射率的乘积只能通过VIIR和SDSM探测器通过旋转望远镜组件（RTA）和SDSM SD视口测量。使用预启动参数表，Initimh-Factor趋势显示出异常振荡。为了验证预推出表的功能，NOAA-20 VIIRS航天器于2018年1月25日和2018年1月26日进行了15次偏航演习，作为发布后测试的一部分。在偏航操作期间，收集轨道SD和SDSM数据，并用于表征SD屏幕透射功能，使用BRDF和SDSM太阳视图透射函数。轨道估计的SD / SDSM BRDFS和SDSM Sun屏幕透射功能显示出与预发射版本的一些差异，特别是对于SDSM Sun View屏幕透射功能。应用初始偏航机动派生表未解决此问题。作为一种替代方法，NOAA VIIRS团队应用了一种方法来从一年的常规轨道SDSM集合中添加了SDSM Sun透射函数中的精细功能，以覆盖SDSM Sun Viewport中的太阳能方位角的全部运行范围。在施加额外的SDSM检测器增益校正之后，偏航机动和在轨道常规SDSM数据点进行对齐，在SDSM检测器6,7和8中降低异常大的降解。最后，1％级振荡振荡减少到0.2％水平。对应的SDF因子，缩放校准系数，并送到NOAA的接口数据处理段（IDP），以生成官方VIIRS Science Record（SDR）产品。

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  • 来源
    《International journal of remote sensing》 |2020年第18期|6503-6526|共24页
  • 作者

    Choi Taeyoung; Shao Xi; Blonski Slawomir; Cao Changyong;

  • 作者单位

    NOAA Natl Environm Satellite Data & Informat Serv Ctr Satellite Applicat & Res NESDIS STAR College Pk MD 20740 USA|Global Sci & Technol Greenbelt MD USA;

    NOAA Natl Environm Satellite Data & Informat Serv Ctr Satellite Applicat & Res NESDIS STAR College Pk MD 20740 USA|Univ Maryland Cooperat Inst Satellite Earth Syst Studies CISESS Earth Syst Sci Interdisciplinary Ctr College Pk MD 20740 USA;

    NOAA Natl Environm Satellite Data & Informat Serv Ctr Satellite Applicat & Res NESDIS STAR College Pk MD 20740 USA|Global Sci & Technol Greenbelt MD USA;

    NOAA Natl Environm Satellite Data & Informat Serv Ctr Satellite Applicat & Res NESDIS STAR College Pk MD 20740 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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