The article discusses a periodic interference cancellation system based on adaptive filter theory, and introduces the system form and structure principle.
文中讨论了一种基于自适应滤波原理的周期性干扰对消系统，介绍了系统组成及结构原理。
Aiming at how to prevent periodic interference, more papers have covered LMS adaptive filter, which needs to adjust many parameters and shows instability in pulse type interference.
针对怎样抑制周期性干扰，文献中报道较多的是LMS自适应滤波方法，但该方法需调整参数多，对脉冲型干扰表现出不稳定性。
We analyze rejecting periodic interference in PD monitoring on line through cascade IIR digital wave notch filter. The principle and simple design method are proposed and discussed.
在分析用IIR陷波滤波器来抑制局部放电在线监测中周期性干扰的基础上，提出和论述了级联式II R陷波滤波器基本原理及简明设计方法。
Methods: Through telephone follow-up survey, periodic reexamination and readmission, continuously nursing interference was applied to the patients with NPC so that compliance can be understand.
方法：对NPC患者住院时及出院半年后进行护理干预，通过电话随访、定期复查等方式了解患者依从性的状况。
Simulation experiments show that the chaotic system can effectively identify and restrain the periodic impulse interference without any influence on PD pulse.
实验表明，特定的混沌系统可准确、快速地识别周期性脉冲干扰信号并予以抑制，而对局部放电脉冲信号无任何影响。
A periodic malfunction due to electromagnetic pulse would not cause a mass recall, though some of the incidents were due to external electromagnetic interference.
因为电磁脉冲造成的周期性的障碍是不会引起年夜范围的召回的，尽管一些如许的变乱是因为外部的电磁干扰。
The results show that the EWC threshold method of complex wavelet transform can effectively suppress the periodic narrowband interference from GIS UHF PD signals.
研究结果表明：基于EWC阈值法的复小波变换能够有效地抑制GIS特高频PD信号中的周期性窄带干扰。
When the quasi-periodic quasi-structure of random medium interacts with matching pump light, the interference effect under its whole multiple scattering leads to lasing in random medium.
无序介质激光是由该介质的非周期—类结构与相匹配的泵浦光场相互作用时其整体多重散射的干涉效应产生的。
The zero transfer point can be set arbitrarily by appropriately selecting transmitting periodic time T and number N, and it is advantageous to eliminate some interference in some frequency points.
适当选择发射周期T和周期数N就可以随意设置梳状滤波器的零传输点，有利于消除某些频率的干扰；
The zero transfer point can be set arbitrarily by appropriately selecting transmitting periodic time T and number N, and it is advantageous to eliminate some interference in some frequency points.
适当选择发射周期T和周期数N就可以随意设置梳状滤波器的零传输点，有利于消除某些频率的干扰；
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