红外与毫米波学报, 2019, 38 (3): 351, 网络出版: 2019-07-20   

对空中弱小目标可探测性的影响

Influence of complex environment on the detectability of weak and small aerial target under space-based observation mode
作者单位
1 哈尔滨工业大学 空间光学工程研究中心, 黑龙江 哈尔滨 150001
2 北京跟踪与通信技术研究所, 北京 100094
3 南京航空航天大学 航天学院, 江苏 南京 210016
摘要
针对天基观测复杂环境下空中弱小目标远程广域探测的需求, 立足于天基光学探测链路, 分析太阳光照、云层及地表等复杂背景环境与目标辐射的相互作用机理, 在此基础上提出影响天基目标光学特性的探测场景环境要素; 然后结合目标的可探测性表征, 分析在不同探测谱段情况下, 不同光照、地表背景类型及云层等复杂环境要素对目标可探测性的影响规律; 最后以某典型目标为例, 结合现有的目标特性认知与理论建模, 分析得出复杂环境要素的影响排序, 并根据目标信杂比随谱段的变化特性, 提出探测谱段的优选建议, 为我国隐身/反隐飞行器设计、探测系统设计及信息处理算法优化提供理论依据与科学指导.
Abstract
Aiming for remote wide-area detection of weak and small aerial target under space-based complex observation conditions, the radiation interaction mechanism of complex background environment, such as solar illumination, clouds and earth surface, and aerial target was analyzed based on the full link of optical detection, and then the main environmental factors that affect the target radiation characteristics were proposed. After that, combined with the detectability characterization, the influence rules of environmental factors, such as different illuminations and various background types, on the target detection performance under different detection spectrum were studied. Finally, by taking a typical target as an example, the influence order of different environmental factors was ranked combined with the existing target characteristics cognition and theoretical modeling, and the detection spectral optimal selection suggestions were given according to the change characteristics of target signal-to-clutter ratio with spectral bands, which provide theoretical basis and scientific guidance for the design of stealth/anti-stealth aircraft, space-based detection system and information processing optimization algorithm.

胡建明, 乔凯, 智喜洋, 张寅, 巩晋南, 陈文彬. 对空中弱小目标可探测性的影响[J]. 红外与毫米波学报, 2019, 38(3): 351. HU Jian-Ming, QIAO Kai, ZHI Xi-Yang, ZHANG Yin, GONG Jin-Nan, CHEN Wen-Bin. Influence of complex environment on the detectability of weak and small aerial target under space-based observation mode[J]. Journal of Infrared and Millimeter Waves, 2019, 38(3): 351.

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