基于激光反散射在流动领域的排水量上为高精确察觉测量系统( MLBM )的 A 小说多激光横梁被设计, studied.MLBM 有许多优点,例如简单结构,高稳定性,并且在目标回响察觉的高敏感上围绕大气的 backscattering 的强烈影响的 laser.By 的 monochromaticity 的没有限制,由信号处理的激光的反散射密度上的高精确察觉是 achieved.Furthermore ,信号 de
A novel multi-laser beams measuring system (MLBM) for high precision detection on displacement of flow fields based on laser backscatter was designed and studied. MLBM has many advantages, such as simple structure, high stability, and no limitation of the monochromaticity of laser. By circumventing the strong influence of atmospheric backscattering on the high sensitivity of target echo detection, high precision detection on backscatter density of laser by signal processing was achieved. Furthermore, the signal densities of various distances were extracted by time sampling and precise frequency control of digital circuit. Finally, the MLBM system including devices integrated of emitting and reviving equipments and program was obtained. Detection experiments showed that our system has high precision and the measurement error could be controlled within 5% to 10%.