液面反射波信号主要在硬件方面采用双通道二阶有源低通滤波，功图信号则在软件方面采用数字滤波算法。
Reflected wave signal is processed by double channels two-order low-pass active filtering in hardware, and indicator diagram signal is processed by digital filtering in software.
由该模型电路可产生一阶低通、一阶高通及二阶低通、二阶带通滤波器。
Based on this configuration, a first order lowpass or highpass filters and a second order lowpass or highpass filter can be constructed.
讨论了低通滤波和双二阶网络滤波等几种可以减小倾斜反射镜机械谐振的方法。
The low pass filter (LPF) and the double second rank filter (DSF) are tested to reduce the mechanical oscillation of FSM.
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