采用零差的相干探测方式，设计并实现了一套光纤结构的激光多普勒振动计。
Using the way of homodyne coherent detection, a fiber laser Doppler vibrometer is designed and completed.
基于外差激光多普勒原理，设计并实现了一套光纤结构的外差式激光多普勒振动计(LDV)。
Base on the heterodyne laser Doppler theory, a heterodyne laser Doppler vibrometer (LDV) with fiber structure was designed and implemented.
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