Infrared and Laser Engineering, Volume. 50, Issue 4, 20200250(2021)
Air target reference spectrum selection based on characteristic wavelengths extracted by successive projections algorithm
Figures & Tables(17)
Fig. 10. Normalized spectra of target A at different flying heights
Table 1. [in Chinese]
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Parameters Aircraft A Aircraft B Flying height of 5 km Flying height of 10 km Flying height of 5 km Flying height of 10 km T*/K 736 653 1093 1012 p*/Pa 249985 126009 495003 273214 Mole fractions CO2 0.023 0.021 0.043 0.038 H2O 0.022 0.020 0.041 0.038 O2 0.173 0.177 0.143 0.147
Table 2. [in Chinese]
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Wavelengths Item SAM SID SID (TAN) 3-5 μm s1 1774 1698 635 s2 197 20 0.8292 s3 2741 1608 948 s4 5287 6674 8416 Entropy 4673 3810 2364 8-14 μm s1 3696 5264 6168 s2 972 331 102 s3 2741 2388 2074 s4 2591 2 018 1656 Entropy 5642 4844 4208
Table 3. [in Chinese]
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Wavelengths Item t1 t2 t3 t4 Characteristic wavelengths s1 0.6746 306 3125 8032 s2 160 0.3761 1568 3075 s3 1584 1062 12 655 s4 4839 1 970 131 7.3441 Full wavelengths s1 0.0968 80 1051 5994 s2 54 0.1044 325 2456 s3 418 119 13 1055 s4 2872 1059 171 19
Table 4. [in Chinese]
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Wavelengths Item t1 t2 t3 t4 Characteristic wavelengths s1 0.0276 9.4809 7.9253 12 s2 7.8953 0.0325 0.4322 0.4315 s3 7.9513 1.785 0.0246 0.2363 s4 13 0.7400 0.0088 0.0263 Full wavelengths s1 0.0226 1.5345 1.8895 2.5380 s2 1.1268 0.0253 0.1063 0.1251 s3 2.0735 0.5161 0.0149 0.0536 s4 2.5261 0.4121 0.0060 0.0157
Table 5. [in Chinese]
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Wavelengths Item 0° 90° 180° 3-5 μm A 231 233 221 B 317 302 297 8-14 μm A 6.8735 6.4541 5.7993 B 0.0403 0.0302 0.0318
Table 6. [in Chinese]
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Wavelengths Item 0° 90° 180° 3-5 μm A 1.9966 2.9061 3.0677 B 14 64 105 8-14 μm A 0 0 0 B 0.0002 0 0
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Yunke Zhang, Dengfeng Ren, Yuge Han, Jiyuan Li. Air target reference spectrum selection based on characteristic wavelengths extracted by successive projections algorithm[J]. Infrared and Laser Engineering, 2021, 50(4): 20200250
Paper Information
Category: Image processing
Received: Jun. 10, 2020
Accepted: --
Published Online: Jul. 30, 2021
The Author Email: Dengfeng Ren (rendengfeng@njust.edu.cn)
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