冷空异常下热红外波段再定标及非均匀校正
投稿时间:2021-02-09  修订日期:2021-03-23  点此下载全文
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作者单位邮编
瞿洋 中国科学院上海技术物理研究所 200083
黄小仙 中国科学院上海技术物理研究所 
冯旗 中国科学院上海技术物理研究所 200083
基金项目:国家重点研发计划资助
中文摘要:海洋一号B星水色水温扫描仪(HY-1B COCTS)在轨工作时受到冷空未知辐射的干扰导致其九年数据均受到不同程度的影响。以两极受影响较小的数据做样本,建立基于再定标系数的响应修复模型和基于概率分布的非均匀校正模型,对地球目标信号进行修复,并对修复结果进行了对比和优化,并对修复模型的精确性和稳定性进行了验证。最后结果表明,在冷空辐射基准受影响的情况下,响应修复模型结合概率分布校正模型能够明显的对数据进行有效修复。
中文关键词:红外遥感  冷空异常  再定标  非均匀校正
 
Re-calibration and nonuniform correction of thermal infrared band under cold space abnormal
Abstract:Chinese ocean color and temperature (COCTS) was interfered by the unknown radiation of cold space when the satellite of HY-1B was in orbit, which causes its nine-year data to be affected to varying degrees. Using data with less impact on the two poles as samples, the response repair model based on recalibration coefficients and the non-uniform correction model based on probability distribution were established to repair the earth target signal, and the repair results were compared and optimized. The accuracy and stability of model were verified. The final results show that under the condition of the cold space radiation benchmark is affected, the response repair model combined with the probability distribution correction model can obviously repair the data effectively.
keywords:infrared remote sensing  cold space abnormal  re-calibration  nonuniform correction
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