Two signal processing methods, one based on analog filters, the other based on digital lock-in amplifying technique, are developed and analyzed.
设计了基于模拟滤波器和基于数字锁相放大技术的两种红外气体传感器的信号处理方法。
By narrowing the bandwidth of the signal and amplifying it by a lock-in amplifier, the fluctuating components of the signal can be shown on an oscillograph with lock-in amplifier.
锁相放大技术对被测信号进行窄带放大，锁相放大器结合示波器输出了被测信号的周期变化部分，实现了光热法测量中微弱信号的测量。
Lock reestablished on new signal, he said.
锁定重建新信号，他说。
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