激光与光电子学进展, 2017, 54 (1): 010102, 网络出版: 2017-01-17   

低纬度地区红外波段大气透射率研究 下载: 535次

Atmospheric Transmittance at Infrared Band in Low Latitude Areas
作者单位
空军工程大学航空航天工程学院, 陕西 西安 710038
摘要
低纬度地区、相对湿度较大的大气影响了机载红外搜索跟踪(IRST)系统的作用距离。针对此问题, 根据低纬度地区近几年的大气资料, 从理论上分析了影响大气透射率的主要因素, 重点建立了大气透射率数学模型, 修正了高度和斜程对大气透射率的影响; 通过MatLab软件分别仿真分析了不同季节、不同天气、不同俯仰角以及不同路程和高度时3~5 μm波段的大气透射率, 与大气透射率计算软件(LOWTRAN7)的仿真结果相比, 其误差约为5%, 验证了模型的实效性, 从而为指导实际作战使用IRST系统提供了理论依据。
Abstract
The action range of airborne infrared search and track (IRST) system is affected by the large humidity of atmosphere in low latitude areas. Aiming at this problem, the main factors affecting the atmospheric transmittance are analyzed based on the atmospheric data in low latitude areas in recent years. The mathematical model of atmospheric transmittance is established. The impact of height and oblique distance are also revised. Atmosphere transmittance at the wave band from 3 μm to 5 μm is analyzed by using Matlab under different seasons, weather conditions, pitching angles, heights and distances. Comparing with the simulation results of LOWTRAN7, the error is about 5%, which verifies the effectiveness of the model. The conclusion has significant reference value on guiding the practical operation of IRST system.
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寇人可, 王海晏, 吴学铭. 低纬度地区红外波段大气透射率研究[J]. 激光与光电子学进展, 2017, 54(1): 010102. Kou Renke, Wang Haiyan, Wu Xueming. Atmospheric Transmittance at Infrared Band in Low Latitude Areas[J]. Laser & Optoelectronics Progress, 2017, 54(1): 010102.

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