首页 > 论文 > 中国激光 > 47卷 > 10期(pp:1010001--1)

相干激光微多普勒雷达的干扰抑制研究

Interference Suppression of Coherent Laser Micro Doppler Radar

  • 摘要
  • 论文信息
  • 参考文献
  • 被引情况
  • PDF全文
分享:

摘要

目标微多普勒特征可作为目标识别的依据,其探测往往受到激光雷达自身在激光束方向上振动的影响,并且测量结果受到本地振动的影响。提出了一种利用目标自身参考点来抑制本地干扰的方法,分析了目标待测位置和参考位置的回波与本地振动信号的拍频信号,并进行补偿处理,从而达到抑制本地振动、目标相对运动干扰的目的。实验结果表明,所提方法对本地振动和目标相对运动干扰的抑制具有显著的效果,相对补偿精度小于5%,补偿后得到的微多普勒特征能较好地反映目标真实的微振动形式。

Abstract

The micro Doppler features of a target can be used as the basis of target recognition. The detection of micro Doppler features is often affected by the vibration of lidar itself in the direction of laser beam, and it is difficult to eliminate the influence of local vibration on the measurement results. In this paper, a method of using the reference point of the target itself to suppress local interference is proposed. The local vibration and relative motion interference can be suppressed by analyzing the beat frequency signal between echo signals from the target position and reference position and the local vibration signal and by the compensation process. Experimental results show that the proposed method has a significant effect on the suppression of local vibration and target relative motion interference, and the relative compensation accuracy is less than 5%. The micro Doppler characteristics obtained after compensation can better reflect the real micro vibration of the target.

广告组1 - 空间光调制器+DMD
补充资料

中图分类号:TN958.95

DOI:10.3788/CJL202047.1010001

所属栏目:遥感与传感器

基金项目:国家自然科学基金;

收稿日期:2020-04-07

修改稿日期:2020-05-13

网络出版日期:2020-10-01

作者单位    点击查看

李跃新:中国科学院上海光学精密机械研究所空间激光传输与探测技术重点实验室, 上海 201800中国科学院大学材料与光电研究中心, 北京 100049
孙建锋:中国科学院上海光学精密机械研究所空间激光传输与探测技术重点实验室, 上海 201800
周煜:中国科学院上海光学精密机械研究所空间激光传输与探测技术重点实验室, 上海 201800
卢智勇:中国科学院上海光学精密机械研究所空间激光传输与探测技术重点实验室, 上海 201800
蔡新雨:中国科学院上海光学精密机械研究所空间激光传输与探测技术重点实验室, 上海 201800中国科学院大学材料与光电研究中心, 北京 100049
从海胜:中国科学院上海光学精密机械研究所空间激光传输与探测技术重点实验室, 上海 201800中国科学院大学材料与光电研究中心, 北京 100049

联系人作者:孙建锋(sunjianfengs@163.com); 周煜(sunjianfengs@163.com);

备注:国家自然科学基金;

【1】Acharekar M A, Gatt P, Mizerka L J. Laser vibration sensor [J]. Proceedings of SPIE. 1995, 2472: 2-11.

【2】Farquharson G, Inngs M R. A 50-800 MHz stepped frequency continuous wave ground penetrating radar[C]∥Proceedings of the 1998 South African Symposium on Communications and Signal Processing-COMSIG''''98 (Cat. No. 98EX214), September 8, 1998, Rondebosch, South Africa. New York: , 1998, 455-460.

【3】Haddadi K, Wang M M, Glay D, et al. A 60 GHz six-port distance measurement system with sub-millimeter accuracy [J]. IEEE Microwave and Wireless Components Letters. 2009, 19(10): 644-646.

【4】Liu Y P, Wang C, Xia H Y. Application progress of time-frequency analysis for lidar [J]. Laser & Optoelectronics Progress. 2018, 55(12): 120005.
刘燕平, 王冲, 夏海云. 时频分析在激光雷达中的应用进展 [J]. 激光与光电子学进展. 2018, 55(12): 120005.

【5】Chen V C, Lipps R D. Time frequency signatures of micro-Doppler phenomenon for feature extraction [J]. Proceedings of SPIE. 2000, 4056: 220-226.

【6】Chen V C. Analysis of radar micro-Doppler with time-frequency transform[C]∥Proceedings of the Tenth IEEE Workshop on Statistical Signal and Array Processing (Cat. No.00TH8496), August 16, 2000, Pocono Manor, PA, USA. New York: , 2000, 463-466.

【7】Zhang P Z, Wu J, Huang G H. Active compensation method of nonlinear error in homodyne laser interferometer for vibration measurement [J]. Laser & Optoelectronics Progress. 2018, 55(8): 081204.
张埔榛, 吴军, 黄庚华. 单频激光干涉测振仪的非线性误差主动补偿法 [J]. 激光与光电子学进展. 2018, 55(8): 081204.

【8】Jiang L A, Albota M A, Haupt R W, et al. Laser vibrometry from a moving ground vehicle [J]. Applied Optics. 2011, 50(15): 2263-2273.

【9】Halkon B J, Rothberg S J. Reprint of: taking laser Doppler vibrometry off the tripod: correction of measurements affected by instrument vibration [J]. Optics and Lasers in Engineering. 2017, 99: 3-10.

【10】Yu Z B, Zhao D, Zhang Z Q. Doppler radar vital signs detection method based on higher order cyclostationary [J]. Sensors. 2017, 18(1): 47.

【11】Gouveia C, Vieira J, Pinho P. A review on methods for random motion detection and compensation in bio-radar systems [J]. Sensors. 2019, 19(3): 604.

【12】Revel M G. Laser vibrometry vibration measurements on vehicle cabins in running conditions: helicopter mock-up application [J]. Optical Engineering. 2011, 50(10): 101502.

【13】Liotto G, Wang C P. Vibration measurement by a laser Doppler displacement meter [J]. Proceedings of SPIE. 1996, 2868: 337-343.

【14】Zhang H Y, Zhao C M, Jiang Q J, et al. Laser detection on micro-Doppler effect in coherent ladar [J]. Chinese Journal of Lasers. 2008, 35(12): 1981-1985.
张海洋, 赵长明, 蒋奇君, 等. 基于相干激光雷达的激光微多普勒探测 [J]. 中国激光. 2008, 35(12): 1981-1985.

【15】Wu J. Research on key technologies of high repetition frequency coherent laser ranging and velocity measurement in large dynamic range [D]. Shanghai: University of Chinese Academy of Sciences. 2015.
吴军. 大动态范围高重频相干激光测距测速关键技术研究 [D]. 上海: 中国科学院大学. 2015.

【16】Lu X Y, Yun T, Xue L F, et al. Effective feature extraction and identification method based on tree laser point cloud [J]. Chinese Journal of Lasers. 2019, 46(5): 0510002.
卢晓艺, 云挺, 薛联凤, 等. 基于树木激光点云的有效特征抽取与识别方法 [J]. 中国激光. 2019, 46(5): 0510002.

【17】Sun J F, Zhou Y, Lu Z Y, et al. Scanning lidar technology based on FMCW . C]∥2017 Optical Technology Symposium and Interdisciplinary Forum, Shanghai: Shanghai Infrared and Remote Sensing Society. 2017.
孙建锋, 周煜, 卢智勇, 等. 基于调频连续波的扫描激光雷达技术 . C]. 2017年光学技术研讨会暨交叉学科论坛文集, 上海: 上海市红外与遥感学会. 2017.

引用该论文

Li Yuexin,Sun Jianfeng,Zhou Yu,Lu Zhiyong,Cai Xinyu,Cong Haisheng. Interference Suppression of Coherent Laser Micro Doppler Radar[J]. Chinese Journal of Lasers, 2020, 47(10): 1010001

李跃新,孙建锋,周煜,卢智勇,蔡新雨,从海胜. 相干激光微多普勒雷达的干扰抑制研究[J]. 中国激光, 2020, 47(10): 1010001

您的浏览器不支持PDF插件,请使用最新的(Chrome/Fire Fox等)浏览器.或者您还可以点击此处下载该论文PDF