空中目标红外辐射强度计算通用模型及其应用 
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General Model for Calculating Infrared-Radiation Intensity of Aerial Target and Its Application
中国人民解放军95859部队, 甘肃 酒泉 735018
图 & 表
图 1. 目标在面阵红外探测器上的成像示意图
Fig. 1. Imaging sketch of target on focal plane array infrared detector
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图 2. 目标斜距及观测仰角随时间的变化曲线
Fig. 2. Variations of target slope distance and observational elevation angle with time
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图 3. 中波红外大气表观辐射强度随目标直径的变化
Fig. 3. Variation of middle infrared atmospheric apparent radiation intensity with diameter of target
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图 4. 长波红外大气表观辐射强度随目标直径的变化
Fig. 4. Variation of long infrared atmospheric apparent radiation intensity with diameter of target
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表 1不同几何尺寸目标中波和长波红外大气表观辐射强度及占比情况
Table1. Middle- and long-wave infrared atmospheric apparent radiation intensity of different geometry targets and its proportion
| Target diameter /m | Target image size /pixel | Mid-wave infrared radiation (3.7-4.8 μm) | Long-wave infrared radiation (8.0-9.2 μm) | |
|---|
| Δ /(W·sr-1) | Itheory /(W·sr-1) | /% | Δ /(W·sr-1) | Itheory /(W·sr-1) | /% |
|---|
| 0.3 | 1 | 0.00086 | 0.05 | 1.72 | 0.052 | 0.56 | 9.29 | | 0.5 | 2 | 0.00240 | 0.14 | 1.71 | 0.145 | 1.55 | 9.35 | | 1.0 | 3 | 0.00950 | 0.55 | 1.73 | 0.580 | 6.19 | 9.37 | | 2.0 | 9 | 0.03820 | 2.20 | 1.74 | 2.320 | 24.74 | 9.38 | | 3.0 | 13 | 0.08600 | 4.96 | 1.73 | 5.220 | 55.67 | 9.38 | | 5.0 | 22 | 0.24000 | 13.77 | 1.74 | 14.490 | 154.64 | 9.37 | | 8.0 | 35 | 0.61000 | 35.26 | 1.73 | 37.100 | 395.87 | 9.37 |
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表 2中波红外小目标动态测试数据的计算结果
Table2. Calculation results of dynamic test data of middle-wave infrared small target
| No. | Target distance /km | Elevation angle /(°) | Target altitude /km | Mid-wave infrared radiation intensity /(W·sr-1) |
|---|
| 1 | 18 | 15.20 | 4.71 | 0.2636 | | 2 | 17 | 16.20 | 4.73 | 0.2617 | | 3 | 16 | 17.19 | 4.72 | 0.2698 | | 4 | 15 | 18.42 | 4.73 | 0.2751 | | 5 | 14 | 19.82 | 4.74 | 0.2818 | | 6 | 13 | 21.37 | 4.73 | 0.2970 |
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表 3扩展目标动态测试数据的计算结果
Table3. Calculation results of dynamic test data for extended target
| No. | Target distance /km | Elevation angle /(°) | Target altitude /km | Image size /(pixel×pixel) | Mid-wave infrared radiation intensity /(W·sr-1) | Long-wave infrared radiation intensity /(W·sr-1) |
|---|
| 1 | 9.7 | 29.3 | 4.740 | 30×30 | 0.5534 | 9.8829 | | 2 | 9.8 | 29.0 | 4.739 | 30×30 | 0.5900 | 9.8769 | | 3 | 9.9 | 28.7 | 4.742 | 30×30 | 0.5462 | 9.3779 | | 4 | 10.0 | 28.3 | 4.728 | 30×30 | 0.5261 | 9.7281 | | 5 | 10.1 | 27.9 | 4.726 | 30×30 | 0.5373 | 9.5847 |
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贺元兴, 张浩元, 司文涛, 吴统邦, 程军练. 空中目标红外辐射强度计算通用模型及其应用[J]. 光学学报, 2019, 39(6): 0612007. Yuanxing He, Haoyuan Zhang, Wentao Si, Tongbang Wu, Junlian Cheng. General Model for Calculating Infrared-Radiation Intensity of Aerial Target and Its Application[J]. Acta Optica Sinica, 2019, 39(6): 0612007.
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