处理测量的多激光横梁(MLBM ) 的反散射信号的一个跨关联的察觉方法被介绍,它能被由平均中部的过滤器和有限推动反应(冷杉木) 组成的数字过滤器第一过滤数字过滤器。用单个脉搏、三脉搏的跨关联的察觉方法处理反散射信号详细被描绘。从计算结果,跨关联的察觉能有效地改进的多脉搏 signal-to-noise 比率(SNR ) 。最后,风速度和方向被山峰延期方法基于高出现的关联功能决定与数字十字的帮助测量精确和 MLBM 系统的高 SNR -- 关联察觉。
A cross-correlation detection method to process backscatter signals of multi-laser beams measuring (MLBM) is presented, which can be firstly filtered by the digital filter composed of average median filter and finite impulse response (FIR) digital filter. The processing of backscatter signals using single-pulse and three-pulse cross-correlation detection methods is depicted in detail. From calculation results, the multi-pulse cross-correlation detection could effectively improve signal-to-noise ratio (SNR). Finally, both wind velocity and direction are determined by the peak-delay method based on the correlation function which shows high measuring precision and high SNR of the MLBM system with the assistance of the digital cross- correlation detection.