Infrared and Laser Engineering, Volume. 52, Issue 5, 20220715(2023)
Simulation of high spectral resolution oceanic particulate carbon profile detection system
Figures & Tables(10)
Fig. 1. High spectral resolution detection principle for iodine molecular absorption cells
Fig. 4. (a) Maximum sounding depth in some waters of the Indian Ocean; (b) Maximum sounding depth in some waters of the South Pacific Ocean; (c) Maximum ocean depth estimation using space-based ocean lidar, Liu Qun et al[12]
Fig. 5. Scattering spectrum of interaction between laser and sea water[17]
Fig. 6. Variation of normalized intensity with temperature under central frequency dithering
Table 1. Parameters of lidar
View tableView in ArticleTable 1. Parameters of lidar
Parameter Value Wavelength $ \lambda $ 532.2 Lidar altitude ${ {H} }$ 2 000 Pulse energy $ E $ 1 Pulse repetition frequency/kHz 5 Pulse width $ \mathrm{\Delta }t $ 10 Receiver effective area A/m2 0.031 4 Refraction index $ n $ 1.35 Transmittance of the receiver optics ${T}_{{\rm{0}}}$ 0.5 Transmittance through the sea surface $ {T}_{s} $ 0.95 Quantum efficiency of PMT 0.1 Dynamic range of PMT/dB 50 Overlap factor $ O $ 1 Splitting ratio 1∶4
Table 2. Characteristics of the different operating wavelengths of the shipboard detection system
View tableView in ArticleTable 2. Characteristics of the different operating wavelengths of the shipboard detection system
Wavelength/nm Line Center frequency jitter range at 5‰ error of normalized intensity/MHz 532.1985 - ±60 532.2423 1111 ±30 532.2451 1110 ±90 532.2897 1105 ±30 532.2928 1104 ±60
Table 3. Characteristics of the different operating wavelengths of the airborne detection system
View tableView in ArticleTable 3. Characteristics of the different operating wavelengths of the airborne detection system
Wavelength/ nm Extinction ratio/ dB FWHM/ GHz Line $ {T}_{m};{T}_{a} $ Normalization intensity change (4-32 ℃) $ {T}_{m};{T}_{a} $ (±60 MHz) Normalization intensity change (±60 MHz) 532.1985 28.8 1.42 - 64.4%; 99.5% 3‰ 17.8‰; 2.4‰ 3‰ 532.2451 30.2 1.28 1110 58.5%; 99.8% 2‰ 2.9‰; 0.8‰ 5‰ 532.2897 25.9 1.28 1105 56.7%; 99.5% 2‰ 0.7‰; 2.1‰ 4‰ 532.2928 30.9 1.40 1104 60.8%; 99.8% 5‰ 1.3‰; 0.3‰ 5‰
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Fu Yang, Wenhao Chen, Yanyu Lu, Yan He. Simulation of high spectral resolution oceanic particulate carbon profile detection system[J]. Infrared and Laser Engineering, 2023, 52(5): 20220715
Paper Information
Category: Laser & laser optics
Received: Oct. 12, 2022
Accepted: --
Published Online: Jul. 4, 2023
The Author Email: He Yan (heyan@siom.ac.cn)
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