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(1) Notch filter for external noise suppression.

(2) Thus a comb notch filter based new interference reduction method is proposed.

(3) It is necessary to select a reasonable notch filter in the loop of control system.

(4) The counteracted current by going through the notch filter based on adaptive filter technique is proposed to eliminate the residual fundamental wave and its harmonic wave.

(5) A compensation method to realize a optimum notch filter is developed and implemented by matching the loss of fiber delay line with the coupling-coefficient of couplers.

(6) The notch filter is used first to remove the fixed strong disturbance, and then the spectrum analysis is employed to estimate the frequency of vortex signal.

(7) The parallel and series Adaptive Notch Filter(ANF)can be used to filter several frequencies of Signals.

(8) The notch filter proposed is used to attenuate the adjacent channel interference in the Loran-C receiver.

(9) An adaptive notch filter with the capability of tracking frequency variation is applied to filter the signal and calculate its frequency.

(10) By adding a second frequency notch filter, the constant switching frequency direct power control(CSF-DPC) can be used for the unbalanced fault ride through operation.

(11) The modification of the notch filter made the extra phase-shifting introduced to the control system passband reduced and so the control performance was improved.

(12) A notch filter is proposed for single complex frequency estimation problem. It is represented as state-space equation model, which has good stability.

(13) Liquid crystal filter system with a high precision for night vision is comprised of a wideband optical filter having a critical wavelength, and a liquid crystal notch filter.

(14) The depth of the notch is adjusted by using the adaptive lattice IIR notch filter, so as to improve the SNR of output signal.

(15) Four types of linear phase FIR filters are introduced at first, then of this basis a notch filter for processing ECG signal is designed by using multiple exchange algorithm.

(16) At the switching node, the label or payload extraction can be realized simply through an optical bandpass or notch filter respectively.

(17) The traditional method to remove power frequency interference is to use a notch filter or adaptive filter.

(18) 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.

(19) A method of controlling chaos based on the multiple notch filter was developed to direct chaotic motion towards regular motion .

(20) For RFI and narrowband noise interferences, this dissertation studies notch filter and spectrum equilibrium and uses them to suppress narrow jammings in signal domain.

(21) In the second part of this thesis, an application of adaptive all-pass based notch filter (ANFA) with Gaussian-Newton adaptive algorithm in a GPS narrowband anti- jamming system was presented. Sentencedict.com

(22) We combine the merits of two approaches and propose a novel unbalance compensation method, notch filter based on coordinate transformations.

(23) Mainly include the design of directional multi microphone system, two channel procession circuit, notch filter, squelch, wide dynamic range compression (WDRC) , tone generator.