Journal of Infrared and Millimeter Waves, Volume. 41, Issue 1, 2021106(2022)
Analysis of radiation reference anomaly of HY-1B COCTS and research on the repair algorithm
Figures & Tables(27)
Fig. 13. The relationship between the glitter energy and zenith angle for HY-1C COCTS
Fig. 17. Image curve before and after correction（No.1164 pixel）（a）channel 1~4,（b）channel 5~8
Fig. 18. Image curve before and after correction（No.1840 frame）（a）channel 1~4，（b）channel 5~8
Fig. 19. Image correction（a）image before correction,（b）image after correction
Fig. 20. Image correction of the Bohai Sea and the Yellow Sea area（a）image before correction，（b）image after correction
Table 1. Main performance of COCTS and MODIS
View tableView in ArticleTable 1. Main performance of COCTS and MODIS
技术指标 C/D星水色仪 MODIS 轨道高度（km） 782 705 轨道类型 太阳同步 太阳同步 轨道周期（分钟） 100.6 98.8 地球覆盖周期（日） 0.5~1 1~2 谱段范围（μm） 0.4~12.5 0.4~14.4 地面分辨率（m） 1 100 250~1 000 幅宽（km） 2 900 2 330 设计寿命（年） 5 5~6
Table 2. VNIR spectral range of COCTS
View tableView in ArticleTable 2. VNIR spectral range of COCTS
通道 谱段（μm） 应用对象 1 0.402～0.422 黄色物质、水体污染 2 0.433～0.453 叶绿素吸收 3 0.480～0.500 叶绿素、海水光学、海冰、污染、浅海地形 4 0.510～0.530 叶绿素、水深、污染、低含量泥沙 5 0.555～0.575 叶绿素、低含量泥沙 6 0.660～0.680 中高含量泥沙、大气校正、污染、气溶胶 7 0.734～0.754 大气校正、高含量泥沙 8 0.845～0.885 大气校正、高含量泥沙
Table 3. Energy level of integrating sphere
View tableView in ArticleTable 3. Energy level of integrating sphere
开灯数量 灯功率（W） 第4谱段光谱辐亮度
（mW∙cm-2∙μm-1∙Sr-1）
0 0 0 1 150 1.416 2 150+50 2.727 3 150+50+100 5.999 4 150+50+100+200 11.146 5 150+50+100+200+300 21.511
Table 4. System response coefficient of HY-1B COCTS
View tableView in ArticleTable 4. System response coefficient of HY-1B COCTS
探测元 响应系数 暗电平 相关系数 CH11A 73.152 89 15.347 48 0.993 9 CH11B 73.421 44 15.352 42 0.994 CH21A 73.637 7 17.268 04 0.993 3 CH21B 73.529 41 17.235 29 0.993 4 CH31A 79.428 12 14.670 37 0.993 1 CH31B 80.064 05 14.675 74 0.993 2 CH41A 79.554 49 16.618 93 0.992 9 CH41B 79.808 46 16.600 16 0.993 CH51A 83.472 45 18.305 51 0.991 7 CH51B 82.781 46 18.278 15 0.991 7 CH61A 92.592 59 17.481 48 0.992 4 CH61B 92.764 38 17.467 53 0.992 5 CH71A 97.943 19 14.681 68 0.993 7 CH71B 98.135 43 14.671 25 0.993 8 CH81A 170.765 17.486 34 0.996 5 CH81B 170.998 6 17.458 96 0.996 5
Table 5. Regression coefficient of the glitter of HY-1C COCTS
View tableView in ArticleTable 5. Regression coefficient of the glitter of HY-1C COCTS
通道 斜率 截距 相关系数 1 -3.448 578 6.301 199 -0.675 223 2 -4.269 947 7.101 911 -0.708 497 3 -5.756 909 8.673 079 -0.740 943 4 -6.828 983 9.679 126 -0.739 072 5 -8.133 145 10.919 994 -0.741 929 6 -9.904 326 12.693 466 -0.738 442 7 -10.365 134 12.987 391 -0.744 667 8 -11.085 599 13.601 824 -0.742 428
Table 6. 1st pixel’s repair coefficient of 8 channels of HY-1B COCTS
View tableView in ArticleTable 6. 1st pixel’s repair coefficient of 8 channels of HY-1B COCTS
探测元 能量修复系数 斜率 截距 相关系数 CH11A 57.95 -188.486 0.843 CH11B 58.591 -195.259 0.842 CH21A 63.424 -297.407 0.849 CH21B 63.602 -300.908 0.849 CH31A 73.859 -333.964 0.893 CH31B 75.369 -345.69 0.89 CH41A 77.7 -279.389 0.905 CH41B 78.153 -280.332 0.905 CH51A 82.999 -237.105 0.912 CH51B 83.294 -243.694 0.911 CH61A 93.763 -164.48 0.923 CH61B 94.816 -170.759 0.922 CH71A 173.544 -154.908 0.967 CH71B 174.693 -160.589 0.965 CH81A 354.823 -161.201 0.982 CH81B 356.442 -168.427 0.981
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Wen-Long FAN, Xiao-Xian HUANG, Yu-Tian FU. Analysis of radiation reference anomaly of HY-1B COCTS and research on the repair algorithm[J]. Journal of Infrared and Millimeter Waves, 2022, 41(1): 2021106
Paper Information
Category: Research Articles
Received: Mar. 31, 2021
Accepted: --
Published Online: Apr. 18, 2022
The Author Email: Xiao-Xian HUANG (huangxiaoxian@139.com)
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