摘要
对光子多普勒测速(PDV)的基本原理和光学外差技术进行了阐述,对时分、波分、波分时分联合等三种多路复用光子多普勒测速(MPDV)复用方案进行了深入的分析,并指出了各种方案适宜的多点测速类型。根据理论分析结果,设计并搭建了一套2路波分加2路时分的MPDV,并设计了爆轰实验装置,同时利用该装置进行了爆轰加载铝飞片的验证实验。结果表明,较好地实现了MPDV技术,并从其复用了4个测点速度信息的1路干涉信号中,分别解读出了各个测点的多普勒频移曲线及速度曲线,最高速度达到2.5km/s,飞行时间达到16μs,同时验证了MPDV与常规PDV和外差式PDV在静态干涉信号、多普勒频移曲线、速度曲线等方面的差异性和相同点。研究结果对于研究大数量点数MPDV有重要的参考意义。
The operational principle and heterodyne technology of photonic Doppler velocimetry are introduced,time division multiplexing（TDM）,wavelength division multiplexing（WDM）,time and wavelength division multiplexing,are analyzed in detail.According to the analysis,a multiplexed photonic Doppler velocimetry（two TDM,two WDM）device is designed,and the velocities of explosively driven aluminum plates are tested by the proposed MPDV.The experimental results show that the MPDV is achieved well,four frequency curves and velocity curves are measured with just one interference signal,the velocity is up to 2.5 km/s,and the flight time is 16μs,the interference signal,frequency curve and velocity curve are distinct from those of photonic Doppler velocimetry and heterodyne multiplexed photonic Doppler velocimetry.The solution will provide a valuable reference for the multiplexed photonic Doppler velocimetry.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2014年第11期160-167,共8页
Chinese Journal of Lasers
基金
国家自然科学基金(11202194
11272298)
中国工程物理研究院科学技术发展基金(2013B0403059)
关键词
光纤光学
多路复用光子多普勒测速
光学外差
时分复用
波分复用
fiber optics multiplexed photonic Doppler velocimetry heterodyne time division multiplexing wavelength division multiplexing
