提出一种新型多普勒三维激光运动姿态测量技术。该技术基于多普勒效应干涉原理，由He-Ne 激光器发出偏振光，通过载波调制和信号解调，获取被测物体的振动信息，并通过测振单元的并联、自动聚焦系统、五路信号获取三维信息、同步数据采集等子系统的混联，最终实现非接触式、跨尺度、高精度的三维测量。该技术克服了传统接触式传感器频带范围窄、测振精度低、不适合测试轻质、软质物体的缺陷，可实现在狭小空间、电磁干扰、微振动、冲击振动、高温环境下三维振动测量。

We propose a new kind of 3D laser Doppler motion measurement technology. The technology is based on the Doppler, He-Ne laser makes polarized light, through the carrier modulation and demodulation signal, gets the vibration information of the object, and through the vibration unit, automatic focusing system, 3D information algorithm of five beam signal and synchronous data acquisition subsystem, finally realizes the non-contact, across scales, high precision 3D measurement. The technology overcomes weaknesses of the traditional non-contact sensor narrow band range, low vibration precision, not suitable for testing of lightweight, soft defect of the object, and can realize the 3D vibration measurement of the narrow space, electromagnetic interference, micro vibration, impact.