The paper analyses the energy and signal noise ratio (SNR) with grating to measure passive laser wavelength in real time, provides the theoretical basis for measurement and error from the method.
从理论上分析了利用光栅实时测量被动入射激光波长的能量分布及信噪比，给出了计算公式及误差分析。
This optimization object function was applied to the blood oxygen saturation measurement system and a higher signal-noise ratio was achieved.
将此目标函数应用到血氧饱和度无创测量系统中，提高了系统的信噪比。
The measure module has bigger Signal-to-Noise Ratio because adopting instrumentation amplifier, Programmable gain amplifier and accumulate measurement.
信号检测模块采用仪表放大、程控增益放大、积累检测方式等措施有效地提高了测量系统的信噪比。
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