基于高阶模糊函数的进动目标平动补偿
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摘要
针对当前平动补偿算法存在的精度不高、稳定性较差的问题,提出了基于高阶模糊函数的进动目标平动补偿算法。该算法将平动引起的距离变化等效为三阶多项式,通过对回波各阶模糊函数进行峰值搜索,实现对各阶平动参数和微动周期的有效估计,进而实现对平动的补偿。仿真实验验证表明,该算法能够实现精确稳定的补偿,为后续基于微多普勒的弹道目标特征提取打下基础。
To solve the problem that current algorithms for translational compensation have low precision and poor stability, a compensation algorithm was proposed based on High-order Ambiguity Function(HAF) in this paper. The algorithm was equivalent to the distance change caused by translation to the third-order polynomial, after performing peaks search on every order's ambiguity function of the echo, the effective estimation of the translation parameters and the micro-motion period of each order were realized, and the compensation for translation was realized. The simulation experiment proved that the algorithm could achieve accurate and stable compensation, and set up the foundation for ballistic target feature extraction based on micro-Doppler.
To solve the problem that current algorithms for translational compensation have low precision and poor stability, a compensation algorithm was proposed based on High-order Ambiguity Function(HAF) in this paper. The algorithm was equivalent to the distance change caused by translation to the third-order polynomial, after performing peaks search on every order's ambiguity function of the echo, the effective estimation of the translation parameters and the micro-motion period of each order were realized, and the compensation for translation was realized. The simulation experiment proved that the algorithm could achieve accurate and stable compensation, and set up the foundation for ballistic target feature extraction based on micro-Doppler.
引文
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[12]高红卫, 谢良贵, 文树梁,等.速度对微多普勒的影响及其补偿研究[J].航天电子对抗, 2008, 24(4):46-50.
[13]雷腾.雷达目标微动特征提取与三维重构[D].西安:空军工程大学,2012.
[14]杨有春, 童宁宁, 冯存前,等.弹道目标中段平动补偿与微多普勒提取[J].宇航学报, 2011, 32(10): 2235-2241.
[15]HU J F,HE X,LI W, et al.Parameter estimation of maneuvering targets in OTHR based on sparse time-frequency representation[J].Journal of Systems Engineering and Electronics,2016,27(3):574-580.
[2]李康乐.雷达目标微动特征提取与估计技术研究[D].长沙:国防科学技术大学, 2010.
[3]邹小海.弹道中段目标双基地微动特性分析于特征提取[D].长沙:国防科学技术大学, 2013.
[4]束长勇, 黄沛霖, 姬金祖.进动锥体平动补偿及微多普勒提取[J].系统工程与电子技术, 2016, 38(2):259-264.
[5]李彦兵,高红卫,李宝柱,等.具有高阶运动的机动目标微多普勒信号提取方法[J].电波科学学报,2015,30(3):524-529.
[6]孙永键,穆贺强,程臻,等.中段弹道目标宽带回波仿真与速度补偿[J].系统工程与电子技术,2014,36(7):1255-1262.
[7]杨有春, 童宁宁, 冯存前,等.利用最强散射点信息的平动补偿与为多普勒提取[J].西安电子科技大学学报, 2012, 39(6): 147-153.
[8]谢苏道,陈亚伟, 孙俊.导弹动态回波序列仿真及平动补偿研究 [J].空军预警学院学报, 2013, 27(3): 169-176.
[9]许旭光, 冯存前, 陈蓉,等.锥柱体弹道目标遮挡效应分析[J]空军工程大学学报, 2018, 19(3): 36-41.
[10]WANG Y,AC A,BAO Z,et al.Imaging of high-speed manoeuering target via improved version of product high-orderambiguity function[J].IET Signal Processing,2016,10(4):385-394.
[11]LI J Q,HE S S,FENG C Q, et al.Method for compensating translational motion of rotationally symmetric target based on local symmetry cancellation [J].Journal of Systems Engineering and Electronics,2017,28(1):36-40.
[12]高红卫, 谢良贵, 文树梁,等.速度对微多普勒的影响及其补偿研究[J].航天电子对抗, 2008, 24(4):46-50.
[13]雷腾.雷达目标微动特征提取与三维重构[D].西安:空军工程大学,2012.
[14]杨有春, 童宁宁, 冯存前,等.弹道目标中段平动补偿与微多普勒提取[J].宇航学报, 2011, 32(10): 2235-2241.
[15]HU J F,HE X,LI W, et al.Parameter estimation of maneuvering targets in OTHR based on sparse time-frequency representation[J].Journal of Systems Engineering and Electronics,2016,27(3):574-580.