许多实际问题的解决,尤其是冲击过程的无接触研究,都需要从被测物的不同点上引出多通道信息输出端。多通道干涉仪的工作原理和单通道的一样,是建立在多普勒效应基础上的,也即基于测量多普勒频率,此频率为两个在空间上重合、频率相互偏移的光 Many practical problems, especially the non-contact study of the impact process, need to lead the multi-channel information output from different points of the tested object. The working principle of a multi-channel interferometer, like that of a single channel, is based on the Doppler effect, that is, based on measuring the Doppler frequency, which is a function of two spatially coincident frequencies shifted in frequency