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根据目标红外辐射在大气中传输衰减的特性探测传感器与目标的距离, 隐身无源, 难于被敌方探测, 发展了一种基于大气氧组分光谱吸收特性的单目单波段被动测距方法.引入视线路径的概念, 将氧物性分布场离散化, 寻找辐射积分路径; 利用离散传递法基本思想, 得到目标窄带辐射强度分布.基于氧分子吸收发射谱独立、吸收系数恰当, 饱和可测范围大等特性, 分析氧吸收波段内谐振频带和远谐振频带辐射强度谱线分布的相对关系, 得到其与积分路径(即距离)的关联. 采用分辨率为0.75 nm半高宽的窄带高分辨率光谱仪, 实地校准氧物性分布场, 实现了测距实验范围75–200 m, 模型测算相对误差最大为7.56%的样机.Passive ranging has received much attention because of its concealment. The distance between sensor and the object is measured by the infrared radiation attenuation in atmosphere. A mono-station single-band ranging method based on spectra transmission characteristics of oxygen is developed. The concept of light of sight (LOS) is introduced. The ray tracing model is built. With the method of discrete transfer and the discretization of physical properties distribution field of oxygen, the radiation strength in oxygen band of the target is calculated by the LOS along the seeker detectors. The radiation strengths in resonant frequency band and non-resonant frequency band are analyzed. The distance is achieved by their relation. High-resolution spectrometer is adopted to build experiment platform. Real-time dynamic ranging can be implemented by field calibration. The present experimental range is 75-200 m. The maximal relative error is 7.56%.
[1] Kalyuzhny N M, Alexandrov S N, Asanov E E 2002 Telecommun. Radio Engin. 58 138
[2] Edward R, Dowski J R, Thomas W C 1994 Appl. Opt. 33 6792
[3] Huang S K, Zhang T L 2005 Proceedings of SPIE, The International Society for Optical Engineering: Image Analysis Techniques Wuhan China, 31 October-2 November, 2005 v6044
[4] Ki-Man Kim, In-Sic Yang 2002 IEEE J. Oceanic Engin. 27 638
[5] Michael R H, Glen P P 2007 Ph. D. Dissertation (Air Force Institute of Technology)
[6] L X J, Weng C S, Li N 2012 Acta Phys. Sin. 61 234205 (in Chinese) [吕晓静, 翁春生, 李宁 2012 物理学报 61 234205]
[7] Wu J F, Li F M 2007 Infrared and Laser Engineering 36 560 (in Chinese) [吴健飞, 李范鸣 2007 红外与激光工程 36 560]
[8] Huang Y, Wang J 2009 J. Infrared Millin. Waves 28 38 (in Chinese) [黄勇, 王浚 2009 红外与毫米波学报 28 38]
[9] Zheng W W, Xu J P, Wang L Q 2009 Acta Phys. Sin. 58 5098 (in Chinese) [郑巍巍, 许静平, 王丽琴 2009 物理学报 58 5098]
[10] Chen X Y, Chou P L 2001 Chin. Phys. 9 781
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[1] Kalyuzhny N M, Alexandrov S N, Asanov E E 2002 Telecommun. Radio Engin. 58 138
[2] Edward R, Dowski J R, Thomas W C 1994 Appl. Opt. 33 6792
[3] Huang S K, Zhang T L 2005 Proceedings of SPIE, The International Society for Optical Engineering: Image Analysis Techniques Wuhan China, 31 October-2 November, 2005 v6044
[4] Ki-Man Kim, In-Sic Yang 2002 IEEE J. Oceanic Engin. 27 638
[5] Michael R H, Glen P P 2007 Ph. D. Dissertation (Air Force Institute of Technology)
[6] L X J, Weng C S, Li N 2012 Acta Phys. Sin. 61 234205 (in Chinese) [吕晓静, 翁春生, 李宁 2012 物理学报 61 234205]
[7] Wu J F, Li F M 2007 Infrared and Laser Engineering 36 560 (in Chinese) [吴健飞, 李范鸣 2007 红外与激光工程 36 560]
[8] Huang Y, Wang J 2009 J. Infrared Millin. Waves 28 38 (in Chinese) [黄勇, 王浚 2009 红外与毫米波学报 28 38]
[9] Zheng W W, Xu J P, Wang L Q 2009 Acta Phys. Sin. 58 5098 (in Chinese) [郑巍巍, 许静平, 王丽琴 2009 物理学报 58 5098]
[10] Chen X Y, Chou P L 2001 Chin. Phys. 9 781
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