Infrared and Laser Engineering, Volume. 53, Issue 11, 20240222(2024)
Prediction and simulation analysis of infrared polarization imaging characteristics of aerodynamic heating targets in orbit under sea background
Figures & Tables(10)
Fig. 1. Target detection diagram of space-based infrared polarization system
Fig. 2. (a) Aerodynamic heating target grid division; (b) Aerodynamic heating target skin temperature at 25 km 4
Fig. 4. Flow chart for calculating the polarization of atmospheric radiative transmission
Fig. 5. Polarization imaging results of target at different detection angles
Fig. 6. Comparison of polarization imaging results of targets at different flight altitudes
Fig. 7. Comparison of polarization imaging results of targets at different speeds
Table 1. Calculation results of imaging evaluation indicators under different observation angles
View tableView in ArticleTable 1. Calculation results of imaging evaluation indicators under different observation angles
Imaging evaluation indicators Observation angle/(°) 10 40 60 SCR S0 0.46 0.37 0.35 S1 3.48 9.52 7.68 S2 4.38 0.61 0.41 Contrast S0 15.2 15.2 15.2 S1 16.2 18.4 16.9 S2 16.6 15.3 15.2 Detection probability S0 0.24 0.24 0.23 S1 0.38 0.73 0.44 S2 0.43 0.25 0.24 Definition S0 0.91 0.98 0.90 S1 1.41 2.29 2.05 S2 1.54 1.01 0.94
Table 2. Calculation results of imaging evaluation indicators under different altitudes
View tableView in ArticleTable 2. Calculation results of imaging evaluation indicators under different altitudes
Imaging evaluation indicators Flight altitude/km 15 25 30 SCR S0 0.35 0.37 0.40 S1 8.50 9.52 11.1 S2 0.56 0.61 0.68 Contrast S0 15.2 15.2 15.2 S1 18.0 18.4 18.8 S2 15.26 15.28 15.30 Detection probability S0 0.23 0.24 0.24 S1 0.67 0.73 0.80 S2 0.24 0.25 0.25 Definition S0 0.97 0.98 0.99 S1 2.14 2.29 2.51 S2 1.02 1.01 1.02
Table 3. Calculation results of imaging evaluation indicators under different speeds
View tableView in ArticleTable 3. Calculation results of imaging evaluation indicators under different speeds
Imaging evaluation indicators Speeds/Ma 3 4 5 SCR S0 0.24 0.26 0.37 S1 0.43 2.07 9.52 S2 0.19 0.26 0.61 Contrast S0 15.2 15.2 15.2 S1 15.2 15.8 18.4 S2 15.2 15.2 15.28 Detection probability S0 0.23 0.23 0.24 S1 024 0.31 0.73 S2 0.23 0.23 0.25 Definition S0 0.97 0.97 0.98 S1 0.98 1.21 2.29 S2 0.96 0.97 1.01
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Cong XIE, Hang YUAN, Guobei CHAI, Dong REN, Jiahui REN. Prediction and simulation analysis of infrared polarization imaging characteristics of aerodynamic heating targets in orbit under sea background[J]. Infrared and Laser Engineering, 2024, 53(11): 20240222
Paper Information
Category: 红外技术及应用
Received: May. 20, 2024
Accepted: --
Published Online: Dec. 13, 2024
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