Researching | Simulation of Space Bne Ionospheric Airglow Imaging

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 3 >Page 828 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 3, 828 (2022)

Simulation of Space Borne Ionospheric Airglow Imaging

DOI: 10.3964/j.issn.1000-0593(2022)03-0828-07 Cite this Article

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Imaging diagram of space borne airglow imager

Fig. 1. Imaging diagram of space borne airglow imager

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Fig. 2. Typical 630 nm airglow volume emission rate profile

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Fig. 3. Airglow intensity distribution of spring equinox and summer solstice with high and low solar activity (in Rayleigh)

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Fig. 4. Airglow intensity distribution of autumnal equinox and winter solstice with high and low solar activity (in Rayleigh)

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Fig. 5. Focal plane imaging diagram

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Fig. 6. Relationship between airglow intensity and SNR

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Fig. 7. The simulation of imaging signal (a) and SNR (b) for high solar activity

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Fig. 8. The simulation imaging signal (a) and SNR (b) for low solar activity

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参数	数值
跃迁系数A₁_D	7.1×10^-3 s^-1
跃迁系数A₂_D	2.2×10^-3 s^-1
量子产率μ_D	1.3
收率β^[10]	76%±6%
反应系数k₁	2×10^-11exp(107.8/T_n) cm³·s^-1
反应系数k₂	2.9×10^-11exp(67.5/T_n) cm³·s^-1
反应系数k₃	(3.730+0.119 65 $T_{n}^{0.5}$ -6.589 8× 10^-4T_n)×10^-12 cm³·s^-1
速率系数 ${γ_{D}}^{[11]}$	6×10^-12 cm³·s^-1
速率系数 ${γ_{O}}^{[11]}$	5×10^-13cm³·s^-1
速率系数 $α_{O_{2}^{+}}$	1.95×10^-7(300/T_e)^0.7 cm³·s^-1
速率系数 $α_{N O^{+}}$	3.5×10^-7(300/T_e)^0.69 cm³·s^-1

Table 1. Parameters value

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参数	数值
像元数n	1 024×256
像元尺寸α	26 μm×26 μm
成像区域尺寸S₁	26.6 mm×6.7 mm
量子效率Q(@630 nm)	0.85
读出噪声N_r	rms 6 e^-/pixel
暗电流(@213 K)	0.07 e^-/pixel·s^-1
灵敏度	1.5 μV/e^-
峰值信号	5×10⁵ e^-·pixel^-1
动态范围	83 000∶1

Table 2. CCD Specifications

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轨道参数	数值	光学参数	数值
卫星轨道高度	700 km	镜头视场角θ	34°
星下观测高度	250 km	镜头焦距	24 mm
星下点速度v	7 031 m·s^-1	光学系统透过率τ	0.52
轨道倾角	70°	镜头F数	2.2
		入瞳直径D	1.1 cm

Table 3. Parameters of the Imager

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