基于一维距离像的弹道中段目标特征提取
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摘要
针对目标的HRRP投影长度提取不精确的问题,首先研究了中段目标的进动特性及其一维距离像在不同雷达视线角下的变化规律,提出了一种基于差分算法的目标投影长度提取方法。该方法利用了目标一维距离像散射中心的峰值效应,使处理后的一维距离像只会在散射中心处出现震荡效应,以此准确提取散射中心,克服了传统长度提取方法在散射中心周围重复搜索造成的误差。在此基础上,分析了目标投影长度随进动的变化规律,提出了一种进动角和目标真实长度提取方法。仿真实验表明以上方法具有很好的提取精度。
This paper first researched the precessional features of midcourse target and its HRRP in different radar posture angles and presented a new projective length abstract method.Based on the peak of the scattering center,this method makes the HRRP present a oscillation phenomenon on this account to abstract scattering center accurately.On this basis,this paper analysed the projective length with precessional motion and presented a new feature abstraction method on precessional angle and the length of the target.Simulation shows that the two methods can work accurately.
This paper first researched the precessional features of midcourse target and its HRRP in different radar posture angles and presented a new projective length abstract method.Based on the peak of the scattering center,this method makes the HRRP present a oscillation phenomenon on this account to abstract scattering center accurately.On this basis,this paper analysed the projective length with precessional motion and presented a new feature abstraction method on precessional angle and the length of the target.Simulation shows that the two methods can work accurately.
引文
[1]廖阔.基于高分辨距离像的雷达自动目标识别研究[D].成都:电子科技大学,2012
[2]吴杰.基于高分辨距离像的雷达自动目标识别技术研究[D].南京:南京航空航天大学,2011
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[4]毕莉,赵锋,高勋章,等.基于高分辨距离像的弹道目标尺寸综合估计方法[J].现代雷达,2009,31(10):42-46
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[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]雷腾,刘进忙,余付平,等.基于时间—距离像的弹道目标进动特征提取新方法[J].信号处理,2012,28(1):73-79
[9]朱玉鹏,王宏强,黎湘,等.基于一维距离像序列的空间弹道目标微动特征提取[J].宇航学报,2009,30(3):1133-1140
[10]金光虎,朱玉鹏,高勋章,等.基于一维像序列的中段雷达目标进动特征提取[J].信号处理,2009,25(5):771-776
[11]颜维,孙文峰,钱李昌,等.基于一维像序列的弹道中段目标进动特征提取[J].空军雷达学院学报,2011,25(2):87-90
[12]Guo Kai-feng,Lin Yun,Wang Meng,et al.Research of Velocity Compensation Method Based on Range Profile Feature[J].Journal of Harbin Institute of Technology,2013,20(2):81-85
[13]Zhu F,Zhang X D,Hu Y F.Gabor filter approach to joint feature extraction and target recognition[J].IEEE Trans.on Aerospace and Electronic System,2009,45(1):17-30
[14]孙慧霞,邱峰,苏世栋.基于一维距离像序列的雷达目标微动参数估计[J].电讯技术,2013,53(4):389-394
[15]Mahafza B R.Radar Systems Analysis and Design Using MatLab[M].USA Florida:CRC Press,2000
[16]孙文峰.宽带毫米波雷达精确制导信息处理方法研究[D].长沙:国防科技大学,1998
[2]吴杰.基于高分辨距离像的雷达自动目标识别技术研究[D].南京:南京航空航天大学,2011
[3]郭尊华,李达,张伯彦.雷达高距离分辨率一维像目标识别[J].系统工程与电子技术,2013,35(1):53-60
[4]毕莉,赵锋,高勋章,等.基于高分辨距离像的弹道目标尺寸综合估计方法[J].现代雷达,2009,31(10):42-46
[5]宁超,田雨光,张向阳.基于雷达一维距离像序列的微动特征提取[J].空军预警学院学报,2013,27(3):173-176
[6]毕莉,赵锋,高勋章,等.基于一维像序列的进动目标尺寸估计研究[J].电子与信息学报,2010,32(8):1825-1830
[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]雷腾,刘进忙,余付平,等.基于时间—距离像的弹道目标进动特征提取新方法[J].信号处理,2012,28(1):73-79
[9]朱玉鹏,王宏强,黎湘,等.基于一维距离像序列的空间弹道目标微动特征提取[J].宇航学报,2009,30(3):1133-1140
[10]金光虎,朱玉鹏,高勋章,等.基于一维像序列的中段雷达目标进动特征提取[J].信号处理,2009,25(5):771-776
[11]颜维,孙文峰,钱李昌,等.基于一维像序列的弹道中段目标进动特征提取[J].空军雷达学院学报,2011,25(2):87-90
[12]Guo Kai-feng,Lin Yun,Wang Meng,et al.Research of Velocity Compensation Method Based on Range Profile Feature[J].Journal of Harbin Institute of Technology,2013,20(2):81-85
[13]Zhu F,Zhang X D,Hu Y F.Gabor filter approach to joint feature extraction and target recognition[J].IEEE Trans.on Aerospace and Electronic System,2009,45(1):17-30
[14]孙慧霞,邱峰,苏世栋.基于一维距离像序列的雷达目标微动参数估计[J].电讯技术,2013,53(4):389-394
[15]Mahafza B R.Radar Systems Analysis and Design Using MatLab[M].USA Florida:CRC Press,2000
[16]孙文峰.宽带毫米波雷达精确制导信息处理方法研究[D].长沙:国防科技大学,1998