瞬态高速光子多普勒测速技术研究现状及展望

面对短时间、高速度等极端测量条件的挑战,光子多普勒测速系统朝向更大测速范围、更高时间分辨力、更高灵敏度和多点测量能力四个方面快速发展.首先文章详细介绍了光子多普勒系统测速原理和背景;其次对测量速度在100 m/s以上、记录时间为纳秒级的瞬态高速光子多普勒测速系统的经典改进方法和发展现状进行了分类和总结;然后着重介绍时域...

Research Status and Prospect of Transient High Speed Photon Doppler Velocimetry

Facing the challenge of extreme measurement conditions such as short time and high speed, the photonic Doppler velocimetry (PDV) system develops rapidly in four aspects: larger dynamic range, higher sensitivity, higher temporal resolution and multi-channel measurement ability. Firstly, the principle and background of photonic Doppler velocimetry is introduced in detail. Secondly, the classical improvement methods and development status of transient high-speed PDV system with measuring speed above 100m/s and recording time of nanoseconds are classified and summarized. Then, the application of time stretches and time lens in the PDV system is emphatically introduced, and the characteristics and potential of time amplification are discussed. Finally, the problems of the transient high speed PDV system are summarized and its future development is prospected.