Measurement of Infrared Radiation Characteristics of Ship Based on Reference Source Method

Table 1. Indexes of in frared radiation characteristic measurement system
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Table 1. Indexes of in frared radiation characteristic measurement system
Aperture /mm Focal /mm Wavelength /μm Pixelnumber F Bit Pixelsize /μm Refrigerationmode NETD /(10^-3 K) Framenumber /Hz
600 1200 7.7~9.3 640×512 2 14 15 Stirling 25 100

Table 2. Parameters of calibration blackbody
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Table 2. Parameters of calibration blackbody
Size /(mm×mm) Emissivity Uniformity Temperature /°C Voltage /V Power /kW
700×700 0.97 0.1 0-600 380 10

Table 3. System average calibration errors under different integration time
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Table 3. System average calibration errors under different integration time
t /μs 100 150 200 300 350
Average calibrationerror /% 0.48 0.51 0.46 0.46 0.45

Table 4. Basic condition of outfield test
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Table 4. Basic condition of outfield test
Temperature /℃ Atmospheric pressure /Pa Relative humidity /% Visibility /km Distance /m Elevation angle /(°)
15 8.56×10⁴ 20 23 870 0

Table 5. Corrected data of infrared atmospheric transmission
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Table 5. Corrected data of infrared atmospheric transmission
t /μs τ_atm L_path /(W·m^-2·sr^-1)
100 0.7166 3.1560
150 0.7421 3.1670
200 0.7272 3.0459
300 0.7345 3.0150
350 0.7414 3.2780
Average 0.7323 3.1323

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Xinming Liu, Zhou Li, Deming Chen, Lihua Cai, Qianxue Wang. Measurement of Infrared Radiation Characteristics of Ship Based on Reference Source Method[J]. Laser & Optoelectronics Progress, 2019, 56(23): 230401

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