基于时间-距离像的弹道目标进动特征提取
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摘要
提出了一种联合宽带雷达多视角距离像进行弹道目标进动特征提取的方法。建立了锥柱体进动模型,并对散射点径向距离进行了分析。运用广义Hough变换提取散射点距离像的曲线参数。定义粗匹配和精匹配选择门限,根据提取的曲线参数信息来对散射点进行匹配,再由散射点初相差的不同进行散射点类型识别。最后,联立两部雷达提取同一散射点的曲线参数求解出进动角θ,再联立多视角距离像信息方程组进行目标的结构参数和雷达视角的求解。仿真结果验证了算法的正确性和有效性。
An algorithm based on uniting the observation information of multi-aspect range profile is proposed to extract the precession features of ballistic targets in this paper. Firstly,cone-cylinder precession model are established. An elaborate analysis of the scattering point range is given. Then the curves parameters in scattering point time-profile are extracted by generalized Hough transform. After defining coarse matching and fine matching selected threshold,each scattering point is matched on the basis of curves parameters information. And type of each scattering point is identified on the basis of the difference of its initial phase. Finally,after uniting two radars,the precession angle is solved on the basis of extracted curves parameters of the same scattering point. Configuration parameters and radar perspective are solved based on established associated multi-Doppler equation systems.
An algorithm based on uniting the observation information of multi-aspect range profile is proposed to extract the precession features of ballistic targets in this paper. Firstly,cone-cylinder precession model are established. An elaborate analysis of the scattering point range is given. Then the curves parameters in scattering point time-profile are extracted by generalized Hough transform. After defining coarse matching and fine matching selected threshold,each scattering point is matched on the basis of curves parameters information. And type of each scattering point is identified on the basis of the difference of its initial phase. Finally,after uniting two radars,the precession angle is solved on the basis of extracted curves parameters of the same scattering point. Configuration parameters and radar perspective are solved based on established associated multi-Doppler equation systems.
引文
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[4]艾小锋,邹小海,李永桢.基于时间-距离像分布的锥体目标进动与结构特征提取[J].电子与信息学报,2011,33(9):2083-2088.
[5]宁超,黄璟,黄培康.基于HRRP的进动锥体目标特征参数求解方法[J].系统工程与电子技术,2014,36(4):650-655.
[6]邵长宇,杜兰,韩勋,等.基于双视角距离像序列的空间锥体目标参数估计方法[J].电子与信息学报,2015,37(11):2735-2740.
[7]艾小锋,李永桢,赵锋,等.基于多视角一维距离像序列的进动目标特征提取[J].电子与信息学报,2011,33(12):2846-2851.
[8]邹小海,艾小锋,李永桢,等.基于微多普勒的圆锥弹头进动与结构参数估计[J].电子与信息学报,2011,33(10):2413-2419.
[9]刘维建,陈建文.弹道目标进动周期特征提取方法研究[J].现代雷达,2009,31(7):62-68.
[2]CHEN V C,LI F Y,HO S S,et al. Micro-doppler effect in radar:phenomenon,model and simulation study[J]. IEEE Transactions on Aerospace and Electronic Systems,2006,42(1):2-21.
[3]姚汉英,孙文峰,马晓岩.基于高分辨距离像序列的锥柱体目标进动和结构参数估计[J].电子与信息学报,2013,35(3):537-544.
[4]艾小锋,邹小海,李永桢.基于时间-距离像分布的锥体目标进动与结构特征提取[J].电子与信息学报,2011,33(9):2083-2088.
[5]宁超,黄璟,黄培康.基于HRRP的进动锥体目标特征参数求解方法[J].系统工程与电子技术,2014,36(4):650-655.
[6]邵长宇,杜兰,韩勋,等.基于双视角距离像序列的空间锥体目标参数估计方法[J].电子与信息学报,2015,37(11):2735-2740.
[7]艾小锋,李永桢,赵锋,等.基于多视角一维距离像序列的进动目标特征提取[J].电子与信息学报,2011,33(12):2846-2851.
[8]邹小海,艾小锋,李永桢,等.基于微多普勒的圆锥弹头进动与结构参数估计[J].电子与信息学报,2011,33(10):2413-2419.
[9]刘维建,陈建文.弹道目标进动周期特征提取方法研究[J].现代雷达,2009,31(7):62-68.