空间积分声光相关系统对高速信号的处理分析

Space Integral Acousto-optics System-related Analysis of High Speed Signal Processing

从声光相关检测原理出发,引入相关检测数学模型,通过其对高速信号处理仿真失效的特点,及将入射光束缩束实现对高速信号处理的方法。由于缩束,使得在光窗范围内的高速信号脉冲不致重叠,声光相关峰将会达到较好的效果。并对因缩束所带来的噪声进行了模拟仿真分析,即使微小的信噪比,利用声光相关机制,噪声也会降到合理的范围。

This article begins with the acousto-optic correlation detection principle, and then introduces its correlation detection the mathematical model, in which high speed signal processing is realized by the fact that its characteristic does not apply to high speed signal processing simulation, and the shrinking ties of the incident beam. Due to the ties, the high speed signal pulse in the optical window scope does not overlap, thus achieving better effect of acousto-optic correlation peak. The analog simulation analysis of the noise form the shrinking ties shows that, even with very small signal- to-noise ratio, the noise can also drop to a reasonable degree by the use of acousto-optics related mechanism.