Weak pulse signal, sensitive, vulnerable to interference, in order to eliminate the noise pulse test, the isolation circuits and multiple filter circuit design.
脉搏信号微弱、敏感、易受干扰，因此为了消除脉搏测试中的各种噪声，设计了隔离电路和多重滤波电路。
The pulse signal is a kind of weak signal with lower SNR. Denoising the pulse signal is an important task before analyzing it.
人体脉象信号是一种信噪比较低的非平稳随机信号，在分析脉象信号之前去噪是一项十分重要的工作。
Simulation and actual test result shows that the new arithmetic could detect weak laser pulse signal effectively, increase the SNR and expand measuring range of laser range finder.
仿真与实际测试结果表明，该方法能有效提取远距离微弱激光脉冲回波信号，从而提高系统信噪比，扩大了系统原有的测程。
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