NOAA-21 VIIRS Thermal Emissive Bands Early On-Orbit Calibration Performance and Improvements

IF 7.5 1区地球科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Geoscience and Remote Sensing Pub Date : 2024-09-11 DOI:10.1109/TGRS.2024.3458869

Wenhui Wang;Changyong Cao;Slawomir Blonski

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引用次数: 0

Abstract

The Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the National Oceanic and Atmospheric Administration-21 (NOAA-21) satellite was launch on November 10, 2022, following the successful operations of the VIIRS onboard the Suomi National Polar-orbiting Partnership (S-NPP) and NOAA-20 satellites. This article presents NOAA-21 VIIRS thermal emissive bands (TEBs) early on-orbit calibration performance, including instrument temperature telemetry trending, TEB gains, noise, and calibration stability as well as biases in the NOAA operational sensor data records (SDR). Different from S-NPP and NOAA-20, NOAA-21 VIIRS TEBs have experienced distinct on-orbit gain changes during its early mission, caused by detector responsivity degradations, mid-mission outgassing (MMOG), and the cold focal plane assembly setpoint temperature switch. The calibration stability and biases of NOAA-21 VIIRS TEB SDRs were analyzed by intercomparing with co-located Cross-Track Infrared Sounder (CrIS) observed and gap-filled spectra. NOAA-21 TEB SDRs have been stable, except for small changes caused by known VIIRS or CrIS instrument setting or calibration updates. VIIRS longwave infrared (LWIR) bands agree with CrIS within 0.1 K; M13 agrees with CrIS ~0.13 K. Calibration parameters derived from the spacecraft pitch maneuver data were applied for the first time in the operational processing, and LWIR scan angle and scene temperature-dependent biases were effectively reduced after that update. Similar to S-NPP and NOAA-20 VIIRS, NOAA-21 VIIRS TEBs also exhibit calibration anomalies during the blackbody warm-up/cool-down (WUCD) tests. NOAA-21 WUCD bias correction coefficients were developed and deployed to the operations for supporting sea surface temperature (SST) applications.

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NOAA-21 VIIRS 热发射波段早期在轨校准性能与改进

美国国家海洋和大气管理局-21（NOAA-21）卫星上的可见红外成像辐射计套件（VIIRS）于 2022 年 11 月 10 日发射，此前，Suomi 国家极轨伙伴关系（S-NPP）和 NOAA-20 卫星上的 VIIRS 已成功运行。本文介绍了 NOAA-21 VIIRS 热辐射波段（TEBs）的早期在轨校准性能，包括仪器温度遥测趋势、TEB 增益、噪声和校准稳定性以及 NOAA 运行传感器数据记录（SDR）中的偏差。与 S-NPP 和 NOAA-20 不同，NOAA-21 VIIRS TEB 在其早期任务中经历了明显的在轨增益变化，这是由探测器响应性退化、任务中期排气（MMOG）和冷焦平面组件设定点温度切换造成的。NOAA-21 VIIRS TEB SDR 的校准稳定性和偏差是通过与同地交叉轨道红外探测器（CrIS）观测光谱和间隙填充光谱进行相互比较来分析的。除了已知的 VIIRS 或 CrIS 仪器设置或校准更新造成的微小变化外，NOAA-21 TEB SDR 一直很稳定。VIIRS 长波红外波段与 CrIS 的吻合度在 0.1K 以内；M13 与 CrIS 的吻合度约为 0.13K。从航天器俯仰机动数据中得出的校准参数首次应用于业务处理，更新后有效减少了长波红外扫描角度和场景温度相关偏差。与 S-NPP 和 NOAA-20 VIIRS 类似，NOAA-21 VIIRS TEB 在黑体升温/降温（WUCD）测试期间也表现出校准异常。NOAA-21 WUCD 偏差校正系数已经开发并部署到支持海面温度（SST）应用的业务中。

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来源期刊

IEEE Transactions on Geoscience and Remote Sensing 工程技术-地球化学与地球物理

CiteScore

11.50

自引率

28.00%

发文量

1912

审稿时长

4.0 months

期刊介绍： IEEE Transactions on Geoscience and Remote Sensing (TGRS) is a monthly publication that focuses on the theory, concepts, and techniques of science and engineering as applied to sensing the land, oceans, atmosphere, and space; and the processing, interpretation, and dissemination of this information.