中国光学, 2016, 9 (5): 596, 网络出版: 2016-10-19   

飞艇红外探测系统探测高超声速目标性能研究

Detectability of airship infrared detection system to hypersonic vehicle
作者单位
装备学院 航天装备系,北京 101416
摘要
以X-51A为例,研究了飞艇红外探测系统对临近空间高超声速目标的探测性能。首先,根据飞行器的飞行状态和飞行高度建立了临近空间高超声速目标不同波段的红外辐射特性模型,以及随高度变化的目标背景红外辐射强度模型; 其次,综合考虑飞行器与飞艇高度、地球曲率及红外辐射在大气中传播的波段选择性等因素,建立了红外辐射在临近空间大气中传播的透过率模型; 在此基础上,建立了飞艇红外探测系统对高超声速目标的探测距离模型。通过仿真得到了临近空间高超声速目标在不同飞行状态下3个波段的红外辐射强度随目标飞行高度变化的曲线,以及飞艇红外探测系统对飞行器在不同飞行状态下3个红外辐射波段的探测能力。研究结果表明: 飞艇红外探测系统对高超声速目标的有效探测距离可以达到百公里量级; 当飞行器飞行状态一定时,随着飞行器飞行高度的增加,系统对目标的探测距离先增大后减小; 与长波波段相比,中短波波段的探测距离更大,并给出了临近空间飞艇应尽量布置在海拔高度大于18 km的高空中的部署建议。
Abstract
Taking the X-51A for example, the detectability of airship infrared detection system to hypersonic vehicle in near space is researched. Firstly, the infrared radiation models of hypersonic vehicle in near space and its background are established in different wavebands, changed with the altitude of hypersonic vehicle. After considering the effects of earth curvature, altitude of hypersonic vehicle and airship, band selectivity of the atmospheric infrared transmission and so on, the three dimensional atmospheric transmittance model of infrared transfer is built. Based on the above models, the detecting distance model of the airship infrared detection system is set up. By simulation, the infrared radiation intensities in three wavebands of hypersonic vehicle in different flight states are obtained, changed with the altitude of hypersonic vehicle, and the detectability of airship infrared detection system to hypersonic vehicle in different simulation situations are also obtained. The results show that the effective detection range of the airship infrared detection system to the hypersonic target can reach 100 kilometers. When the flight state of the hypersonic vehicle is confirmed, with the increase of the altitude of the target, the detection range of the airship infrared detection system increases first and then decrease. At the same time, compared with that in long wave band, the detection range in medium and short wave band is greater. Based on the conclusion, we propose that the deployment of the near space airship should be as far as possible in the altitude above 18 km.

杨虹, 张雅声, 丁文哲. 飞艇红外探测系统探测高超声速目标性能研究[J]. 中国光学, 2016, 9(5): 596. YANG Hong, ZHANG Ya-sheng, DING Wen-zhe. Detectability of airship infrared detection system to hypersonic vehicle[J]. Chinese Optics, 2016, 9(5): 596.

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