Infrared and Laser Engineering, Volume. 52, Issue 2, 20220408(2023)
Research on energy calculation method of weak and small targets based on Rayleigh distribution
Figures & Tables(9)
Fig. 2. Gray level histogram of
Fig. 3. Probability density curve of typical Rayleigh distribution
Fig. 5. Infrared target image and Rayleigh distribution fitting in the experiment
Table 1. Parameter setting of infrared radiation measurement system
View tableView in ArticleTable 1. Parameter setting of infrared radiation measurement system
Parameter name Value Aperture/mm 400 Band/μm 3.7-4.8 Pixel number 640×512 Pixel size/μm 15 Bit depth/bit 14 Integration time/μs 1500/2500
Table 2. Comparison of measurement results of different calculation methods
View tableView in ArticleTable 2. Comparison of measurement results of different calculation methods
t/μs Temperature/℃ Blackbody radiation intensity/× 10−2 W·sr−1 Radiation intensity with binaryzation/× 10−2 W·sr−1 Error Radiation intensity with Rayleigh distribution/× 10−2 W·sr−1 Error 1500 60 3.0846 3.5106 13.81% 3.1572 2.35% 70 4.1615 4.5597 9.57% 4.1441 −0.41% 80 5.5209 5.9500 7.77% 5.5857 1.17% 90 7.2124 7.5829 5.14% 7.3901 2.46% 100 9.2898 9.7716 5.19% 9.3119 0.23% 110 11.8104 12.3958 4.96% 11.3885 −3.57% 120 14.8351 15.5974 5.14% 14.8336 −0.01% 130 19.1106 20.5432 4.42% 19.5578 0.70% 2500 60 3.0846 3.4156 10.73% 3.2901 6.66% 70 4.1615 4.4879 7.84% 4.2319 1.69% 80 5.5209 5.8564 6.08% 5.5331 0.22% 90 7.2124 7.5955 5.31% 7.0158 −2.72% 100 9.2898 9.8316 5.83% 9.3011 0.12% 110 11.8104 10.5275 −10.86% 11.9808 1.44% 120 14.8351 15.2391 2.72% 14.1766 −4.43% 130 18.4276 19.2415 4.42% 18.5578 0.70%
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Ji Li, Haisa Jia, Zhou Li. Research on energy calculation method of weak and small targets based on Rayleigh distribution[J]. Infrared and Laser Engineering, 2023, 52(2): 20220408
Paper Information
Category: Photoelectric measurement
Received: Jun. 14, 2022
Accepted: --
Published Online: Mar. 13, 2023
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