Each required bandpass filter is reduced to two lowpass filters which are relatively simple in design by using complex demodulation. The decomposition and reconstruction architecture are introduecd.
利用复解调技术将设计带通滤波器组转化为设计相对简单的低通滤波器组问题，给出了分解与重构的系统流程。
2
F-P tunable filterdemodulation system is choosed by FBG landslide monitoring system.
滑坡监测系统最终选择光纤f - P可调滤波器解调法。
3
The transmitted signal is generated by a synthesis filter bank and the demodulation process is performed by an analysis filter bank.