摘要
基于相位式激光测距系统的基本原理和鉴相方法,采用双调制频率的方法解决了测量距离和测距精度之间的矛盾,采用差频鉴相的方法减少电路复杂度。首次基于模块化的思想,运用Matlab的Simulink工具实现了系统的原理分析,对频域数字测相、数字同步解调测相法和自动数字测相法进行了比较。从理论上证明了实现一个高精度、快速相位式激光测距系统的可行性,为下一步实际设备研制奠定了基础。
Based on a synthesis on the basic principle and the phase measurement method of laser range finder phaseshift system,the problem between range measurement and resolution measurement is solved by a twofold modulation frequency method, meanwhile, the complexity of electrocircuit is diminished by the method of difference frequency for phase measurement. Based on modularization, the basic principle of laser range finder system is first simulated by Matlab, and three principal measurement methods （The frequency digital phase measuring, the digital synchronous demodulation phase measuring, the automatic digital phase measuring） are compared. At last, the feasibility of a new laser range finder phase-shift system including high-resolution and quick reaction performance is proved in theory, a good foundation for achieving actual equipment later is well prepared.
出处
《激光与红外》
CAS
CSCD
北大核心
2010年第1期22-27,共6页
Laser & Infrared
基金
中国科学院重大科研装备研制项目
三维激光成像技术综合检测平台(No.YZ200813)资助
关键词
幅度调制
差频
测距精度
测相
amplitude modulation
difference frequency for phase measurement
range measurement resolution
phase measurement
