一种精确判定多普勒信号极值点位置的方法

求解多普勒信号频率是测量高速运动目标速度的基础。极值法测量弹丸运动速度时，极值点携带了多普勒信号瞬时频率信息,所以要精确估算弹丸回波信号的频率,找准极值点的位置至关重要，传统的极值法测量精度受方法限制。提出采用二次曲线拟合的方法对回波信号进行去噪处理，根据二次函数求极值点的数学原理求出所有极值点，并对分段拟合算法产生的无效极值点进行准确剔除。通过分析实际测量的弹丸回波信号, 提高了判定极值点位置的精度，为高精度测量运动目标速度奠定了基础。

Abstract

Solving the frequency of Doppler signal is the foundation for speed measurement of high-speed moving target. When measuring speed of the moving projectile by extremum, the extreme value point carries instantaneous frequency information of the Doppler signal. So it is very important to find the location of extreme value point when estimating the frequency of projectile echo signal accurately. The measurement precision of traditional extremum method is more restricted. A method of quadratic curve fitting is proposed to deal with the noise of echo signal, all the extreme value points are found out according to the principle of quadratic function, and invalid extreme value points produced by the piecewise fitting method are eliminated. Through the analysis of actually measured projectile echo signal, the accuracy for determining the position of extreme value point is improved and foundation for high precision measurement of moving targets is laid.

参考文献

[1] 王黎明, 赵昕, 刘洪涛, 等. 微波干涉仪测试数据处理方法[J]. 火炮发射与控制学报, 2004, (4): 63-66.

Wang Liming, Zhao Xin, Liu Hongtao, et al.. Method of test data processing on microwave interferometer[J]. Journal of Gun Launch & Control, 2004, (4): 63-66.

[2] 魏媛媛, 姚金杰. 基于小波去噪和改进极值法的动目标速度测量[J]. 微计算机信息, 2010, 26(7-1): 217-218.

Wei Yuanyuan, Yao Jinjie. Velocity measurement of moving target based on wavelet denoting and improved extremum method[J]. Satellite Computer Information, 2010, 26(7-1): 217-218.

[3] 邹进, 何乐生. 基于区域极值法心电QRS 波的检测[J]. 电子测量技术, 2012, 35(3): 100-106.

Zou Jin, He Lesheng. Detection of ECG QRS wave based on region extreme value method[J]. Electronic Measurement Technology, 2012, 35(3): 100-106.

[4] 周金男, 邬战军, 范哲, 等. 车载激光多普勒测速仪的卡尔曼滤波算法研究[J]. 中国激光, 2014, 41(11): 1102006.

Zhou Jinnan, Wu Zhanjun, Fan Zhe, et al.. Research on Kalman filter algorithm for vehicle laser Doppler velocimeter[J]. Chinese J Lasers, 2014, 41(11): 1102006.

[5] 袁树云, 刘寿先, 王德田, 等. 光纤多普勒测速仪位移模式数据处理新方法[J]. 激光与光电学进展, 2014, 51(3): 030602.

Yuan Shuyun, Liu Shouxian, Wang Detian, et al.. Displacement mode analysis method for data processing of photonic Doppler velocimetry[J]. Laser & Optoelectronics Progress, 2014, 51(3): 030602.

[6] 李建中, 刘寿先, 刘俊, 等. 光子多普勒测速仪的单探头多目标测速能力研究[J]. 中国激光, 2014, 41(11): 1105004.

Li Jianzhong, Liu Shouxian, Liu Jun, et al.. Measuring multiple targets velocities with just one probe of photonic Doppler velocimetry[J]. Chinese J Lasers, 2014, 41(11): 1105004.

[7] 眭晓林, 周寿桓, 赵鸿, 等. 一种全光纤结构的相干激光测速雷达研究[J]. 中国激光, 2013, 40(12): 1208007.

Sui Xiaolin, Zhou Shouhuan, Zhao Hong, et al.. Research on an all-fiber structure velocity measurement coherent lidar[J]. Chinese J Lasers, 2013, 40(12): 1208007.

[8] 谷耀辉, 张燕, 焦翔, 等. 相对角度法测量波片相位延迟量[J]. 中国激光, 2013, 40(9): 0908002.

Gu Yaohui, Zhang Yan, Jiao Xiang, et al.. Measurement for retardation of wave plates using the relative angle method[J]. Chinese J Lasers, 2013, 40(9): 0908002.

[9] 田垅, 刘宗田. 最小二乘法分段直线拟合[J]. 计算机科学, 2012, 39(6A) : 482-484.

Tian Long, Liu Zongtian. Piecewise linear fitting of the least-square method[J]. Computer Science, 2012, 39(6A): 482-484.

[10] 曹健, 林涛, 徐遐龄, 等. 基于最小二乘法和时频原子变换的谐波/间谐波测量算法[J]. 电工技术学报, 2011, 26(10): 1-6.

Cao Jian, Lin Tao, Xu Xialing, et al.. Monitoring of power system harmonic/inter- harmonics based on least squares algorithm and time frequency transform[J]. Transactions of China Electrotechnical Society, 2011, 26(10): 1-6.

[11] 胡灿阳, 陈清军. 基于EMD 和最小二乘法的基线飘移研究[J]. 振动与冲击, 2010, 29(3): 162-167.

Hu Canyang, Chen Qingjun. Research on baseline drift using least-square and EMD[J]. Journal of Vibration and Shock, 2010, 29(3): 162-167.

刘丹, 张丕状, 马春燕. 一种精确判定多普勒信号极值点位置的方法[J]. 激光与光电子学进展, 2015, 52(7): 070401. Liu Dan, Zhang Pizhuang, Ma Chunyan. A Precise Method to Estimate Location of Doppler Signal′s Extreme Value Points[J]. Laser & Optoelectronics Progress, 2015, 52(7): 070401.

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