高重频脉冲激光测距回波处理技术研究
|
摘要
针对高重频激光测距中探测回波信噪比低、探测虚警率高等问题,提出了基于多脉冲信号迭加、脉宽匹配差分和平滑滤波以及三阶累积量谱估计的探测回波综合处理方法.实验及仿真结果表明,采用该方法处理后,可有效抑制探测回波中的噪声,提高探测回波的信噪比,从而提高了高重频脉冲激光测距的探测性能.
To solve the problem of low SNR of detection echoes and high detection false alarm rates in high repetition frequency laser ranging,a echoes detection method based on multi-pulse accumulation,pulse width matching differential,smooth filtering and three-order cumulant spectrum estimation.The results show that the proposed method can effectively suppress the noise and improve the SNR of echoes detection,and improve the detection performance of the high repetition frequency laser ranging.
To solve the problem of low SNR of detection echoes and high detection false alarm rates in high repetition frequency laser ranging,a echoes detection method based on multi-pulse accumulation,pulse width matching differential,smooth filtering and three-order cumulant spectrum estimation.The results show that the proposed method can effectively suppress the noise and improve the SNR of echoes detection,and improve the detection performance of the high repetition frequency laser ranging.
引文
[1]CARIOU J P.Off-acis detection of pulsed laser beams:Simulation and measurements in the lower atmosphere[J].Proceedings of SPIE(S0277-786X),2003,5086:507-509.
[2]赵吉祥,陈超婵,王欢,等.微弱电信号检测方法回顾[J].中国计量学院学报,2009,20(3):201-210.ZHAO J X,CHEN C C,WANG H,et al.A review on weak electrical signal detection[J].Journal of China University of Metrology,2009,20(3):201-210.
[3]高晋占.微弱信号检测[M].北京:清华大学出版社,2004:154-166.
[4]倪旭翔,胡凯.脉冲串互相关方法在远程激光测距中的应用[J].光学学报,2012,32(11):1112005(1-6).NI X X,HU K.Multi-Pulse train cross-correlation method in remote laser ranging[J].Acta Optica Sinica,2012,32(11):1112005(1-6).
[5]胡广书.数字信号处理[M].北京:清华大学出版社,2006:328-332.
[6]刘俊.微弱信号测技术[M].北京:电子工业出版社,2005:26-32.
[7]夏桂芬,赵保军,韩月秋.三脉冲激光雷达的目标检测[J].光电工程,2006,33(3):137-140,144.XIA G F,ZHAO B J,HAN Y Q.Target dectection in three pulse laserradar[J].Opto-Electronic Engineering,2006,33(3):137-140,144.
[8]徐科军.传感器与检测技术[M].北京:电子工业出版社,2007:47-48.
[9]王炳和.现代数字信号处理[M].西安:西安电子科技大学出版社,2011:222-238.
[10]宋爱国,刘文波,王爱民.测试信号分析与处理[M].北京:机械工业出版社,2006:184-185.
[11]杨云升.Matalab曲线拟合及其在实验数据处理中的应用[J].电脑与信息技术,2009,17(2):35-36.YANG Y S.Matalab curve fitting and its application in the experimental data processing[J].Computer and Information Technology,2009,17(2):35-36.
[12]王月兵,孙旭朋,姚磊,等.高申平激光测振仪校准方法研究进展与述评[J].中国计量学院学报,2015,26(4):399-405.WANG Y B,SUN X P,YAO L,et al.Advances and reviews on calibration methods for laser vibrometers[J].Journal of China University of Metrology,2015,26(4):399-405.
[2]赵吉祥,陈超婵,王欢,等.微弱电信号检测方法回顾[J].中国计量学院学报,2009,20(3):201-210.ZHAO J X,CHEN C C,WANG H,et al.A review on weak electrical signal detection[J].Journal of China University of Metrology,2009,20(3):201-210.
[3]高晋占.微弱信号检测[M].北京:清华大学出版社,2004:154-166.
[4]倪旭翔,胡凯.脉冲串互相关方法在远程激光测距中的应用[J].光学学报,2012,32(11):1112005(1-6).NI X X,HU K.Multi-Pulse train cross-correlation method in remote laser ranging[J].Acta Optica Sinica,2012,32(11):1112005(1-6).
[5]胡广书.数字信号处理[M].北京:清华大学出版社,2006:328-332.
[6]刘俊.微弱信号测技术[M].北京:电子工业出版社,2005:26-32.
[7]夏桂芬,赵保军,韩月秋.三脉冲激光雷达的目标检测[J].光电工程,2006,33(3):137-140,144.XIA G F,ZHAO B J,HAN Y Q.Target dectection in three pulse laserradar[J].Opto-Electronic Engineering,2006,33(3):137-140,144.
[8]徐科军.传感器与检测技术[M].北京:电子工业出版社,2007:47-48.
[9]王炳和.现代数字信号处理[M].西安:西安电子科技大学出版社,2011:222-238.
[10]宋爱国,刘文波,王爱民.测试信号分析与处理[M].北京:机械工业出版社,2006:184-185.
[11]杨云升.Matalab曲线拟合及其在实验数据处理中的应用[J].电脑与信息技术,2009,17(2):35-36.YANG Y S.Matalab curve fitting and its application in the experimental data processing[J].Computer and Information Technology,2009,17(2):35-36.
[12]王月兵,孙旭朋,姚磊,等.高申平激光测振仪校准方法研究进展与述评[J].中国计量学院学报,2015,26(4):399-405.WANG Y B,SUN X P,YAO L,et al.Advances and reviews on calibration methods for laser vibrometers[J].Journal of China University of Metrology,2015,26(4):399-405.