基于多个稳定目标的吉林一号光谱02卫星多光谱成像仪的在轨绝对辐射定标

杨松,黄帅,白杨,贾益,巴倩倩,田世强,钟兴

On-orbit Absolute Radiometric Calibration for the Multi-Spectral Imager of Jilin-1/GP02 based on Multiple Stable Targets

Song YANG,Shuai HUANG,Yang BAI,Yi JIA,Qianqian BA,Shiqiang TIAN,Xing ZHONG

表4 重新标定的定标系数与发射前系数对比

Table 4 The comparison between re-calibration coefficients and pre-launch calibration coefficients

波段	在轨定标增益系数 $G a i n_{o n o r b i t}$	发射前定标增益系数 $G a i n_{l a b}$	相对差异
B0	0.060 208	0.056 278	6.98%
B1	0.797 496	0.618 878	28.86%
B2	0.656 255	0.460 650	42.46%
B3	0.149 111	0.128 934	15.65%
B4	0.099 611	0.084 930	17.29%
B5	0.108 881	0.101 792	6.96%
B6	0.071 452	0.061 210	16.73%
B7	0.124 888	0.109 087	14.49%
B8	0.067 739	0.062 695	8.05%
B9	0.026 596	0.024 451	8.77%
B10	0.030 525	0.029 954	1.91%
B11	0.040 713	0.039 350	3.46%
B12	0.035 697	0.033 301	7.20%
B13	0.007 881	0.006 600	19.40%
B14	0.008 639	0.008 129	6.28%
B15	0.010 173	0.009 710	4.77%
B16	0.014 402	0.013 719	4.98%
B17	0.023 070	0.021 864	5.52%
B18	0.015 955	0.013 414	18.94%
B19	0.033 178	0.025 452	30.35%