数据与计算发展前沿 ›› 2026, Vol. 8 ›› Issue (5): 3-17.

CSTR: 32002.14.jfdc.CN10-1649/TP.2026.05.001

doi: 10.11871/jfdc.issn.2096-742X.2026.05.001

• 专刊：“东方”超级计算系统，助力青年科学家科技创新 • 上一篇    下一篇

基于OMB方法风云三号卫星红外高光谱仪器辐射定标精度评估分析

谢孟真1(),漆成莉2,*(),顾明剑1   

  1. 1 中国科学院上海技术物理研究所， 上海 200083
    2 国家卫星气象中心， 北京 100081
  • 收稿日期:2026-06-29 出版日期:2026-10-20 发布日期:2026-10-20
  • 通讯作者: *漆成莉（E-mail: qicl@cma.gov.cn）
  • 作者简介:谢孟真，中国科学院上海技术物理研究所，助理研究员，主要研究方向为风云卫星红外高光谱仪器数据处理与反演应用。
    本文承担工作为实验设计、实验算法实现。
    XIE Mengzhen is an assistant researcher at the Shanghai Institute of Technical Physics, Chinese Academy of Sciences. Her main research interests include data processing and retrieval applications of infrared hyperspectral instruments onboard Fengyun satellites.
    In this paper, she is mainly responsible for experimental design and algorithm realization. E-mail: xiemengzhen@mail.sitp.ac.cn|漆成莉，国家卫星气象中心，研究员，主要研究方向为风云卫星红外高光谱仪器定标与数据处理等。
    本文承担工作为指导优化实验算法与设计。
    QI Chengli is a researcher at the National Satellite Meteorological Center. Her main research interests include calibration and data processing of infrared hyperspectral instruments for Fengyun satellites.
    In this paper, she is mainly responsible for guiding the optimization of experimental algorithms and experimental design. E-mail: qicl@cma.gov.cn
  • 基金资助:
    国家重点研发计划(2023YFB3905400);东方之星青年科学家创新基金(DFZX202520)

Evaluation and Analysis of Radiation Calibration Accuracy of Fengyun-3 Satellite Infrared Hyperspectral Instrument Based on OMB Method

XIE Mengzhen1(),QI Chengli2,*(),GU Mingjian1   

  1. 1 Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
    2 National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China
  • Received:2026-06-29 Online:2026-10-20 Published:2026-10-20

RichHTML

4

PDF

5

摘要：

【目的】卫星观测数据在投入应用之前需要进行多项工作，其中对光谱数据进行观测与模拟偏差的分析是评估仪器辐射定标精度的重要手段。【方法】基于风云三号F星（Fengyun-3F，FY-3F）红外高光谱大气探测仪器（Hyperspectral Infrared Atmospheric Sounder，HIRAS-II）的L1（Level1）级观测数据和“东方”超级计算系统，结合快速辐射传输模型的模拟光谱数据进行观测与模拟偏差计算与分析。本文分别从卫星探元、升降轨、扫描角度、目标温度以及白天黑夜等方面来评估分析偏差变化的特征。【结果】实验结果表明，在长波波段区域除二氧化碳和臭氧吸收波段以外的其余波段的均值偏差在±0.5 K以内，标准差偏差在1 K以内，中波波段整体均值偏差在2 K以内，标准差偏差在1 K以内，短波波段的均值偏差整体在±2 K以内。卫星的各探元间的偏差变化具有较高的一致性，尤其是长波750-1,000 cm-1波段，9个探元间的偏差在±0.1 K以内。选取了8个典型通道，各通道的偏差随卫星扫描角度变化比较平稳，均值偏差整体在±1 K以内，偏差标准差均在1 K以内。在长波和中波波段中，白天与黑夜样本的观测与模拟偏差（Observation and Simulation Bias，OMB）变化较为一致，短波波段的白天均值偏差大于夜间偏差。在长波和中波选取的典型通道未出现偏差明显依赖目标温度变化的情况，可以证明HIRAS-II没有明显的非线性效应。【结论】基于上述实验结果分析，验证了FY-3F/HIRAS-II在轨测试运行期间的L1数据质量，并为辐射定标校准提供验证与参考，为后续的应用提供关键技术基础。

关键词: 风云卫星, 红外高光谱, 辐射定标精度, 观测与模拟, 偏差

Abstract:

[Objective] Before satellite observation data are put into application, multiple tasks need to be carried out. Among them, the analysis of the bias between observation and simulation of spectral data is an important means to evaluate the radiation calibration accuracy of the instrument. [Methods] Based on the L1 observation data of the Hyperspectral Infrared Atmospheric Sounder (HIRAS-II) of Fengyun-3F satellite (FY-3F) combined with the simulated spectral data of the Fast Radiative Transfer Model (RTTOV), the bias calculation and analysis of observation and simulation (OMB) are carried out on the Dongfang Supercomputing System. We evaluate and analyze the characteristics of bias changes in aspects of satellite Fields of Views (FOVs), ascending and descending orbits, scanning angles, target temperatures, and day and night, respectively. [Results] The experimental results show that in the long-wave band region, the mean error of the remaining bands except for the absorption bands of CO2 and O3 is within ±0.5K, and the standard deviation is within 1K. In the medium-wave band, the overall mean error is within 2K, and the standard deviation is within 1K. In the short-wave band, the overall mean error is within ±2K. The bias variations among the various FOV elements of the satellite have a high degree of consistency, especially in the long-wave band of 750-1000cm-1, where the biases among the 9 FOVs are within ±0.1K. We select 8 typical channels. The deviations of each channel change relatively stably with the satellite scanning angle. The average bias is generally within ±1K, and the standard deviations of the deviations are all within 1K. In the long-wave and medium-wave bands, the OMB deviation changes of the daytime and nighttime samples are relatively consistent, while in the short-wave band, the daytime mean error is greater than the nighttime deviation. In the typical channels selected for the long-wave and medium-wave, there are no cases that the deviation significantly depends on the change of the target temperature, which can prove that HIRAS-II has no obvious nonlinear effect. [Conclusions] Based on the analysis of the above experimental results, the L1 data quality during the on-orbit test operation of FY-3F/HIRAS-II is verified, providing verification and reference for radiation calibration as a key technical basis for subsequent applications.

Key words: Fengyun Satellite, HIRAS-II, radiation calibration accuracy, observation and simulation, bias