【摘要】 介绍了一种同时多点激光多普勒测速仪(LDV)的系统构成和原理,推导出了该测量系统的计算公式,并通过实验进行了验证。结果表明,该系统不仅能同时获取流场中多个空间测量点的速度信息,并且具有结构简单、频率响应快和精度高等特点。更多还原

【Abstract】 We describe a new LDV system which can simultaneously measure velocities at different points in a velocity field.The measurement system features a simple structure,high accuracy and fast frequency response.The structure of the proposed system and the principle of the operations are described in detail.A theoretical analysis on Doppler shifts in the system is presented.Experiments to demonstrate the developed LDV system are also described.更多还原