基于太赫兹440 GHz系统目标RCS的高精确度测量
|
摘要
雷达散射截面积(RCS)是衡量目标对雷达波散射能力的一个重要物理量,在目标识别和成像中有重要作用。为解决太赫兹频段目标RCS测量精确度不高的问题,基于440GHz的太赫兹目标RCS测量系统,提出一种新的校准方式并采用软件距离门等技术提高目标RCS的测量精确度。随后,对不同粗糙度的圆柱体进行测量得到其RCS测量结果,与理论值比较分析发现,采用新的处理技术使测量结果达到了较高的精确水平,可用于复杂目标RCS的测量和缩比规律的研究。
The Radar Cross Section(RCS) is an important physical quantity for measuring the target's ability to scatter radar waves. It plays an important role in target recognition and imaging. A new calibration method is proposed and software distance gate technology is utilized to improve the measurement accuracy of the target RCS based on the 440 GHz terahertz target RCS measurement system.The cylinders with different roughness are measured to obtain the RCS measurement results. Compared with the theoretical values, it is found that using the new processing technology can achieve a high level of accuracy, which can be applied to measure RCS of complex targets and study the law of scaling.
The Radar Cross Section(RCS) is an important physical quantity for measuring the target's ability to scatter radar waves. It plays an important role in target recognition and imaging. A new calibration method is proposed and software distance gate technology is utilized to improve the measurement accuracy of the target RCS based on the 440 GHz terahertz target RCS measurement system.The cylinders with different roughness are measured to obtain the RCS measurement results. Compared with the theoretical values, it is found that using the new processing technology can achieve a high level of accuracy, which can be applied to measure RCS of complex targets and study the law of scaling.
引文
[1]刘盛纲,钟任斌.太赫兹科学技术及其应用的新发展[J].电子科技大学学报,2009,38(5):481-486.(LIU Shenggang ZHONG Renbin.New development of terahertz science and technology and its application[J].Journal of University of Electronic Science and Technology of China,2009,38(5):481-486.)
[2]LIU H B,ZHONG H,KARPOWICZ N,et al.Terahertz spectroscopy and imaging for defense and security applications[J]Proceedings of the IEEE,2007,95(8):1514-1527.
[3]聂在平,方大纲.目标与环境电磁散射特性建模--理论、方法与实现(基础篇)[M].北京:国防工业出版社,2009(NIE Zaiping,FANG Dagang.Modeling of electromagnetic scattering characteristics of targets and environmentstheory,method and implementation(Basic)[M].Beijing:National Defense Industry Press,2009.)
[4]LONNQVIST A,MALLAT J,RAISANEN A V.Phase-hologram-based compact RCS test range at 310 GHz for scale models[J].IEEE Transactions on Microwave Theory and Techniques,2006,54(6):2391-2397.
[5]DEMARTINIS G B,MICHAEL J C,THOMAS M H.A 240 GHz polarimetric compact range for scale model RCS measurements[C]//Proceedings of Antenna Measurements Techniques Association(AMTA).Atlanta,GA:[s.n.],2010:3-8.
[6]梁美彦,张存林.相位补偿算法对提高太赫兹雷达距离像分辨率的研究[J].物理学报,2014,63(14):148701-1-148701-6(LIANG Meiyan,ZHANG Cunlin.Research on improving the range image resolution of terahertz radar by phase compensation algorithm[J].Journal of Physics,2014,63(14):148701-1-148701-6.)
[7]LIANG M Y,ZHANG C L,ZHAO R,et al.Experimental 0.22 THz stepped frequency radar system for ISAR imaging[J].Journal of Infrared,Millimeter,and Terahertz Waves,2014,35(9):780-789.
[8]CHEN G,PEI J,YANG F,et al.Terahertz-wave imaging system based on backward wave oscillator[J].IEEE Transactions on Terahertz Science and Technology,2012,2(5):504-512.
[9]杨琪,邓彬,王宏强,等.基于Simulink的太赫兹雷达系统仿真[J].太赫兹科学与电子信息学报,2013,11(2):174-178.(YANG Qi,DENG Bin,WANG Hongqiang,et al.Simulation of terahertz radar system based on Simulink[J].Journal of Terahertz Science and Electronic Information Technology,2013,11(2):174-178.)
[10]蒋彦雯,邓彬,王宏强,等.基于时域光谱系统的太赫兹圆柱RCS测量[J].红外与激光工程,2014,43(7):2223-2227.(JIANG Yanwen,DENG Bin,WANG Hongqiang,et al.Measurement of terahertz cylindrical RCS based on time domain spectroscopy system[J].Infrared and Laser Engineering,2014,43(7):2223-2227.)
[11]黄欣,武亚君,王晓冰,等.太赫兹目标雷达散射截面测量技术[J].空间电子技术,2013,10(4):104-108.(HUANG Xin,WU Yajun,WANG Xiaobing,et al.Radar cross section measurement technique for terahertz target[J].Space Electronics,2013,10(4):104-108.)
[12]黄培康,殷红成,许小剑.雷达目标特性[M].北京:电子工业出版社,2005.(HUANG Peikang,Yin Hongcheng,XU Xiaojian.Radar target characteristics[M].Beijing:Publishing House of Electronics Industry,2005.)
[13]何国瑜,卢成才,洪家才,等.电磁散射的测量与计算[M].北京:北京航空航天大学出版社,2006.(HE Guoyu,LU Chengcai,HONG Jiacai,et al.Measurement and calculation of electromagnetic scattering[M].Beijing:Beihang University Press,2006.)
[14]KNOTT E F,SHAEFFER J F,TULEY M T.Radar cross section[M].2nd ed.Raleigh,NC:Scitech Publishing Inc.,2004.
[15]李柱贞,吕婴,向家武.雷达散射截面常用计算方法[M].北京:目标特性研究编辑部,1981.(LI Zhuzhen,LYU Ying,XIANG Jiawu.Common calculation methods for radar cross sections[M].Beijing:Editorial Office of Target Characteristics Research,1981.)
[2]LIU H B,ZHONG H,KARPOWICZ N,et al.Terahertz spectroscopy and imaging for defense and security applications[J]Proceedings of the IEEE,2007,95(8):1514-1527.
[3]聂在平,方大纲.目标与环境电磁散射特性建模--理论、方法与实现(基础篇)[M].北京:国防工业出版社,2009(NIE Zaiping,FANG Dagang.Modeling of electromagnetic scattering characteristics of targets and environmentstheory,method and implementation(Basic)[M].Beijing:National Defense Industry Press,2009.)
[4]LONNQVIST A,MALLAT J,RAISANEN A V.Phase-hologram-based compact RCS test range at 310 GHz for scale models[J].IEEE Transactions on Microwave Theory and Techniques,2006,54(6):2391-2397.
[5]DEMARTINIS G B,MICHAEL J C,THOMAS M H.A 240 GHz polarimetric compact range for scale model RCS measurements[C]//Proceedings of Antenna Measurements Techniques Association(AMTA).Atlanta,GA:[s.n.],2010:3-8.
[6]梁美彦,张存林.相位补偿算法对提高太赫兹雷达距离像分辨率的研究[J].物理学报,2014,63(14):148701-1-148701-6(LIANG Meiyan,ZHANG Cunlin.Research on improving the range image resolution of terahertz radar by phase compensation algorithm[J].Journal of Physics,2014,63(14):148701-1-148701-6.)
[7]LIANG M Y,ZHANG C L,ZHAO R,et al.Experimental 0.22 THz stepped frequency radar system for ISAR imaging[J].Journal of Infrared,Millimeter,and Terahertz Waves,2014,35(9):780-789.
[8]CHEN G,PEI J,YANG F,et al.Terahertz-wave imaging system based on backward wave oscillator[J].IEEE Transactions on Terahertz Science and Technology,2012,2(5):504-512.
[9]杨琪,邓彬,王宏强,等.基于Simulink的太赫兹雷达系统仿真[J].太赫兹科学与电子信息学报,2013,11(2):174-178.(YANG Qi,DENG Bin,WANG Hongqiang,et al.Simulation of terahertz radar system based on Simulink[J].Journal of Terahertz Science and Electronic Information Technology,2013,11(2):174-178.)
[10]蒋彦雯,邓彬,王宏强,等.基于时域光谱系统的太赫兹圆柱RCS测量[J].红外与激光工程,2014,43(7):2223-2227.(JIANG Yanwen,DENG Bin,WANG Hongqiang,et al.Measurement of terahertz cylindrical RCS based on time domain spectroscopy system[J].Infrared and Laser Engineering,2014,43(7):2223-2227.)
[11]黄欣,武亚君,王晓冰,等.太赫兹目标雷达散射截面测量技术[J].空间电子技术,2013,10(4):104-108.(HUANG Xin,WU Yajun,WANG Xiaobing,et al.Radar cross section measurement technique for terahertz target[J].Space Electronics,2013,10(4):104-108.)
[12]黄培康,殷红成,许小剑.雷达目标特性[M].北京:电子工业出版社,2005.(HUANG Peikang,Yin Hongcheng,XU Xiaojian.Radar target characteristics[M].Beijing:Publishing House of Electronics Industry,2005.)
[13]何国瑜,卢成才,洪家才,等.电磁散射的测量与计算[M].北京:北京航空航天大学出版社,2006.(HE Guoyu,LU Chengcai,HONG Jiacai,et al.Measurement and calculation of electromagnetic scattering[M].Beijing:Beihang University Press,2006.)
[14]KNOTT E F,SHAEFFER J F,TULEY M T.Radar cross section[M].2nd ed.Raleigh,NC:Scitech Publishing Inc.,2004.
[15]李柱贞,吕婴,向家武.雷达散射截面常用计算方法[M].北京:目标特性研究编辑部,1981.(LI Zhuzhen,LYU Ying,XIANG Jiawu.Common calculation methods for radar cross sections[M].Beijing:Editorial Office of Target Characteristics Research,1981.)