目前的声光层析方案距离临床应用还差很远，主要是信噪比差，且无法实行活体检测。
However, now this acoustooptical tomography has great distance from the clinical application due to both low signal-to-noise ratio (SNR) and impossibility to examine the patient in vivo.
光纤通信的出现大大缓解了长期以来一直困扰人们的传输速度低、信噪比差和易干扰等问题。
The appearance of optical fiber communications greatly alleviate such problems as low transmission speed, poor Signal-to-Noise and easy disturbance which puzzle people.
根据三脉冲激光雷达回波信号的特点，对信号进行差分滤波和匹配滤波处理，信噪比提高约1.5倍；
According to laser radar echo characteristic, the difference filter and the match filter were adopted. As a result, the SNR is advanced about 1.5 times.
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