multiple frequency shift
... MFS Multi-Frame Synchronizer 复帧同步器 MFS Multiple Frequency Shift 多频位移 MFSND Multi-Frequency SeNDer 多频发送器 ...
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多频移位键发 multiple frequency shift keying
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对静态位移的测量,二极管检波或乘法检波后分别得到的是一含多频或单频交流成分的脉动直流信号,而乘除法检波后信号不含交流成分。
The DC signals after demodulation still contain AC component of one or several frequencies respectively for multiplication or diode methods, but no AC component for multiplication-Division one.
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