光学学报, 2018, 38 (1): 0128004, 网络出版: 2018-08-31
空间辐射基准传递不确定性的光谱敏感性分析 
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Sensitivity of Intercalibration Uncertainty on Spectral Sampling of Space-Based Radiance Standard
图 & 表
图 1. MERSI-II光谱响应分布与晴空TOA大气透过率及典型目标光谱。(a)可见光波段;(b)近红外波段;(c)短波红外波段;(d)中长波红外波段
Fig. 1. Spectral response distributions of FY-3D/MERSI-II and simulated TOA spectra of transmittance over clear sky, as well as typical target spectra. (a) Visible band; (b) near infrared band; (c) short-wave infrared band; (d) mid-wave to long-wave infrared band
图 2. 晴空沙漠地表不同采样间隔的TOA光谱辐射差异。(a)光谱辐射分布;(b)光谱辐射的绝对差异;(c)光谱辐射的相对差异
Fig. 2. Differences of TOA spectral radiance at different sampling frequencies in desert of clear sky. (a) Spectral radiance distribution; (b) absolute difference of spectral radiation; (c) relative difference of spectral radiance
图 3. 可见光波段10个通道处不同光谱采样间隔时的辐射相对差异。(a) CH1 (0.470 μm); (b) CH2 (0.550 μm); (c) CH3 (0.650 μm); (d) CH8 (0.412 μm); (e) CH9 (0.443 μm); (f) CH10 (0.490 μm); (g) CH11 (0.555 μm); (h) CH12 (0.670 μm); (i) CH13 (0.709 μm); (j) CH14 (0.746 μm)
Fig. 3. Radiance relative differences for ten channels at different sampling frequencies in visible bands. (a) CH1 (0.470 μm); (b) CH2 (0.550 μm); (c) CH3 (0.650 μm); (d) CH8 (0.412 μm); (e) CH9 (0.443 μm); (f) CH10 (0.490 μm); (g) CH11 (0.555 μm); (h) CH12 (0.670 μm); (i) CH13 (0.709 μm); (j) CH14 (0.746 μm)
图 4. 近红外波段6个通道处不同光谱采样间隔的辐射相对差异。(a) CH4 (0.865 μm); (b) CH15 (0.865 μm); (c) CH16 (0.905 μm); (d) CH17 (0.936 μm); (e) CH18 (0.940 μm); (f) CH19 (1.03 μm)
Fig. 4. Radiance relative differences for six channels at different sampling frequencies in near infrared band. (a) CH4 (0.865 μm); (b) CH15 (0.865 μm); (c) CH16 (0.905 μm); (d) CH17 (0.936 μm); (e) CH18 (0.940 μm); (f) CH19 (1.03 μm)
图 5. 短波红外波段3个通道处不同光谱采样间隔的辐射相对差异。(a) CH5 (1.38 μm); (b) CH6 (1.64 μm); (c) CH7 (2.13 μm)
Fig. 5. Radiance relative differences for three channels at different sampling frequencies in short-wave infrared band. (a) CH5 (1.38 μm); (b) CH6 (1.64 μm); (c) CH7 (2.13 μm)
图 6. 太阳反射波段光谱采样间隔为4 nm时所有19个通道处的TOA辐射相对差异
Fig. 6. TOA radiance relative differences for nineteen channels at sampling frequency of 4 nm in reflective solar bands
图 7. 热带晴空区不同采样间隔的TOA光谱辐射差异。(a)光谱辐射分布;(b)光谱辐射的绝对差异;(c)光谱辐射的相对差异
Fig. 7. Differences of TOA spectral radiance at different sampling frequencies in clear sky of tropic. (a) Spectral radiance distribution; (b) absolute difference of spectral radiance; (c) relative difference of spectral radiance
陈申玮, 徐娜, 戴铁, 周心易, 吕浩, 程越茗. 空间辐射基准传递不确定性的光谱敏感性分析[J]. 光学学报, 2018, 38(1): 0128004. Shenwei Chen, Na Xu, Tie Dai, Xinyi Zhou, Hao Lü, Yueming Cheng. Sensitivity of Intercalibration Uncertainty on Spectral Sampling of Space-Based Radiance Standard[J]. Acta Optica Sinica, 2018, 38(1): 0128004.
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