Thermal Emissive Bands On-Orbit Calibration of COCTS2 Onboard the New Generation Ocean Color Observation Satellite

Table 1. The specification for thermal emissive bands of COCTS2
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Table 1. The specification for thermal emissive bands of COCTS2
载荷名称波段号中心波长/μm 带宽/nm 等效噪声温差（300 K）/K 动态范围/K
COCTS2 B16 3.74 190 ≤0.15 200~320
B17 10.8 1000 ≤0.1 200~320
B18 12.0 1100 ≤0.1 200~320

Table 2. Conversion factors of quartic polynomial in various scan angle for thermal emissive bands

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Table 2. Conversion factors of quartic polynomial in various scan angle for thermal emissive bands

波段号	中心波长/μm	黑体定标系数/(W/m²·μm·sr)	$ a\left(b\right)_4 $	$ {a\left(b\right)}_{3} $	$ {a\left(b\right)}_{2} $	$ {a\left(b\right)}_{1} $	$ {a\left(b\right)}_{0} $
B16	3.74	$ {K\mathrm{_n}} $=2.3363×10⁻⁴	6.68812×10⁻⁹	5.14909×10⁻⁷	4.26436×10⁻⁵	−3.03246×10⁻³	0.50774
B16	3.74	$ B_{\mathrm{n}} $=−1.20899	1.46403×10⁻⁹	−1.53299×10⁻⁷	−1.46450×10⁻⁵	6.94456×10⁻⁴	0.11434
B17	10.8	$ K\mathrm{_n} $=5.2397×10⁻³	−1.04202×10⁻⁹	4.01930×10⁻⁷	7.14983×10⁻⁵	−2.59827×10⁻³	0.51548
B17	10.8	$ B\mathrm{_n} $=−51.97108	7.05569×10⁻⁹	−2.78115×10⁻⁶	−5.33046×10⁻⁴	1.82999×10⁻²	3.83532
B18	12.0	$ K_{\mathrm{n}} $=7.6024×10⁻³	−3.89152×10⁻⁹	3.82285×10⁻⁷	8.33500×10⁻⁵	−2.32371×10⁻³	0.50917
B18	12.0	$ B_{\mathrm{n}} $=−80.18959	2.58202×10⁻⁸	−2.54851×10⁻⁶	−5.80610×10⁻⁴	1.52934×10⁻²	3.70709

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Yuehai XU, Lei GUAN, Liqin QU, Yan LI, Ting YANG, Rui CHEN. Thermal Emissive Bands On-Orbit Calibration of COCTS2 Onboard the New Generation Ocean Color Observation Satellite[J]. Spacecraft Recovery & Remote Sensing, 2025, 46(2): 111

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