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本文用高斯光束的光波函数推导了双光束激光测速方法中两束激光相交空间(测区)的光学相干结构。导出了散射光函数、散射光频率分布。证明了散射光的最可几频率与多普勒频移的一致性。
In this paper, the optical coherence structure of two laser intersecting spaces (zone) in two-beam laser velocimetry is deduced with the light wave function of Gaussian beam. The scattered light function is derived and the scattered light frequency distribution is derived. The coincidence of the most probable frequency of scattered light and Doppler shift is proved.