激光自混合干涉的三维空间定位方法  

Three-dimensional positioning method of laser self-mixing interference

作　　者：邸臻炜 黄筱佟 宫海晓 DI Zhenwei;HUANG Xiaotong;GONG Haixiao(School of Information&Electronic Engineering,Wuzhou University,Guangxi Colleges and Universities Key Laboratory of Image Processing and Intelligent Information System,Wuzhou University,Wuzhou Guangxi 543002,China)

机构地区：[1]梧州学院大数据与软件工程学院,广西梧州543002 [2]广西高校图像处理与智能信息系统重点实验室,广西梧州543002

出　　处：《激光杂志》2021年第7期147-151,共5页Laser Journal

基　　金：国家自然科学基金(No.61862056);广西高校中青年教师科研基础能力提升项目(No.2019KY0677);广西高校中青年教师科研基础能力提升项目(No.2019KY0680)。

摘　　要：为了有效提高三维空间内物体定位方法的精度,提出基于激光自混合干涉的三维空间定位方法。通过激光器自混合干涉光强信号的相位调制,以及获取光强信号的一次与零次谐波分量,恢复三维空间内物体发生的位移;采用三角剖分算法,获得三维空间内节点模糊定位信息,确定三维空间位置节点的有效范围,获取任务目标活动范围;采用傅里叶转换方法,将声呐装置放置在三维空间模糊范围内收集声源反馈,完成激光自混合干涉的三维空间定位。实验结果表明:采用所提方法能够获取任务目标的精确三维空间位置,且定位误差最低约为1%。In order to effectively improve the accuracy of object positioning method in three-dimensional space,a three-dimensional space positioning method based on laser self-mixing interference is proposed.Through the phase modulation of the laser self-mixing interference light intensity signal and obtaining the first and zero harmonic components of the light intensity signal,the displacement of the object in the three-dimensional space is recovered;the fuzzy positioning information of the three-dimensional space node is obtained by using the triangulation algorithm,the effective range of the three-dimensional space position node is determined,and the range of the mission target is obtained;the Fourier transform method is used,The sonar device is placed in the three-dimensional space fuzzy range to collect the sound source feedback,and complete the three-dimensional space positioning of laser self-mixing interference.The experimental results show that the proposed method can obtain the accurate three-dimensional space position of the task target,and the minimum positioning error is about 1%.

关 键 词：激光光束 自混合干涉 三维空间 正弦波 谐波线性 傅里叶转换 声源反馈 

分 类 号：TN393[电子电信—物理电子学]