This introduces introduces such new developed technics as digital wave filtering and rectifying, etc.
该仪器采用了数字滤波消偏等新技术。
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.
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。
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