Active noise control (ANC) is a new high technology integrated with acoustic, adaptive control and digital signal process and it has become the research focus center of noise control.
Besides, it can be used both to measure the small signal S-parameters of active networks and the S-parameters of passive networks with high accuracy.
此法也可用于猜测一切有源网络的小信号s参数和一切无源网络的S参数。
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A collimation system for commander panoramic sight based on based on high performance digital signal processor and active disturbance rejection control (ADRC) technique is put forward.