基于双频脉冲激光器的距离多普勒探测

doi:10.3969/j.issn.1001-2400.2011.03.026

J4 ›› 2011, Vol. 38 ›› Issue (3): 159-163.doi: 10.3969/j.issn.1001-2400.2011.03.026

基于双频脉冲激光器的距离多普勒探测

李艳辉；吴振森

(西安电子科技大学理学院，陕西西安 710071)

收稿日期:2010-06-12 出版日期:2011-06-20 发布日期:2011-07-14
通讯作者: 李艳辉
作者简介:李艳辉(1979-)，女，西安电子科技大学博士研究生，E-mail: wuzhs@mail.xidian.edu.cn．
基金资助:
国家自然科学基金资助项目(60771038);瞬态光学与光子技术国家重点实验室开放基金资助项目(SKLST200906);中央高校基本科研业务费专项基金资助项目(K50510070009)

Range Doppler detection based on the pulsed two-frequency laser

LI Yanhui；WU Zhensen

(School of Science, Xidian Univ., Xi'an 710071， China)

Received:2010-06-12 Online:2011-06-20 Published:2011-07-14
Contact: LI Yanhui

摘要/Abstract

摘要：

采用双频激光器产生的两个频率的脉冲激光作为载波，结合微波信号处理技术，进行目标距离和速度的探测．导出了探测信噪比与激光传输距离之间的关系，分析了双频激光脉冲宽度对多普勒探测的影响．应用微波提取差频信号的方法，对脉冲带宽和多普勒差频值之间进行了比较，分析了脉冲带宽可以包含多个多普勒门和脉冲带宽小于多普勒差频这两种情况下探测多普勒信号的方法．

关键词: 光载微波激光雷达, 多普勒效应, 双频激光器, 差频

Abstract:

A method for measuring the range and velocity of the target is proposed based on the pulsed two-frequency laser, and the lidar-radar system concept is introduced. By analyzing the electrical power signal-to nose ratio (SNR), the relation between detection range and pulsewidth is obtained. Then the Doppler detection of the laser pulse bandwidth containing many Doppler gates and the laser pulse bandwidth less than the beat frequency is given.

Key words: lidar-radar, Doppler effect, two-frequency laser, beat frequency

中图分类号:

TN 249

李艳辉；吴振森. 基于双频脉冲激光器的距离多普勒探测[J]. J4, 2011, 38(3): 159-163.

LI Yanhui；WU Zhensen. Range Doppler detection based on the pulsed two-frequency laser[J]. J4, 2011, 38(3): 159-163.

参考文献

［1］王本谦, 孙宝举, 华喆年, 等. 激光雷达［M］. 北京: 宇航出版社, 1994: 1-3.
［2］吴建新, 王彤, 索志勇. 机载高重复频率雷达多普勒中心估计方法［J］. 西安电子科技大学学报, 2009, 36(3): 396-400.
Wu Jianxin, Wang Tong, Suo Zhiyong. Method for Doppler Centroid Estimation of Airborne Radar with a High Pulse Repetition Frequency［J］. Journal of Xidian University, 2009, 36(3): 396-400.
［3］李明, 廖桂生, 袁晓懿, 等. 具有垂直基线的双基机载雷达杂波谱距离依赖性分析［J］. 西安电子科技大学学报, 2009, 36(6): 979-984.
Li Ming, Liao Guisheng, Yuan Xiaoyi, et al. Analysis of the Dependence of the Vertical Baselin Bistatic Airborne Radar Clutter Spectrum on Range［J］. Journal of Xidian University, 2009, 36(6): 979-984.
［4］ Brunel M, Amon A, Vallet M. Dual-polarization Microchip Laser at 1.53μm［J］. Opt Lett, 2005, 30(18): 2418-2420.
［5］ Brunel M, Bretenaker F, Le Floch A. Tunable Optical Microwave Source Using Spatially Resolved Laser Eigenstates［J］. Opt Lett, 1997, 22(6): 384-386.
［6］ Eberhard W L, Schotland R M. Dual-frequency Doppler-lidar Method of Wind Measurement［J］. Appl Opt, 1980(19): 2967-2976.
［7］ Stann B L, Ruff W C, Sztankay Z G. Intensitymodulated Diode Laser Radar Using Frequency-modulation Continuous-wave Ranging［J］. Opt Eng, 1996(35): 3270-3278.
［8］李磊, 赵长明, 高岚, 等. 变光外差为电外差的双频激光探测［J］. 光学学报, 2007, 27(2): 249-252.
Li Lei, Chao Changming, Gao Lan, et al. Laser Detection by Electronic Instead of Optical Using Two-Frequency Laser［J］. Acta Optica Sinica, 2007, 27(2): 249-252.
［9］ Mullen L, Vieira A, Herczfeld P R, et al. Microwave-modulated Transmitter Design for Hybrid Lidar—radar［C］//Proceedings of the 1995 IEEE MTT-S International Microwave Symposium -Institute of Electrical and Electronics Engineers. New York: IEEE, 1995: 1495-1498.
［10］ Mullen L J, Vieira J C A, Herczfeld P R, et al. Application of Radar Technology to Aerial Lidar Systems for Enhancement of Shallow Underwater Target Detection［J］. IEEE Trans on Microwave Theory Tech, 1995(43): 2370-2377.
［11］ Mullen L J, Herczfeld P R, Contarino V M. Hybrid Lidar—radar Ocean Experiment［J］. IEEE Trans on Microwave Theory Tech, 1996(44): 2703-2710.
［12］王仕康, 沈熊, 周作元. 激光多普勒测速技术［M］. 北京: 清华大学出版社, 1985: 66-67.

[1]	杨洁;刘聪锋;田中成;张斌. 迭代时差频差联合定位算法及其性能分析[J]. J4, 2015, 42(4): 140-146.
[2]	陈亮;梁昌洪;吴边;朱诚. 非线性左手材料中的差频耦合 [J]. J4, 2008, 35(6): 1015-1019.

基于双频脉冲激光器的距离多普勒探测

Range Doppler detection based on the pulsed two-frequency laser

PDF (PC)

赞

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 2

Metrics

本文评价

推荐阅读 10