prefilter 中文意思是什麼
prefilter
解釋
初步過濾-
On the premise of the analysis of prefilter, introduced a new methods of constructing the prefilter, examples are given. 5. compared several multiwavelets systems constructed by the methods in this paper
在對已有的前濾波器分析的基礎上，介紹了一種新的前濾波器的設計方法，並給出設計範例。 -
The adaptive front - end has the adaptive ability for the magnitude and frequency of input signals. it can prefilter for the input signals, eliminate the useless signals, and improve the dynamic range of receiver system. it can lessen the burden of digital signal processing in the back - end of receiver, and improve the performance of receiver system
自適應接收機前端對輸入信號有自適應能力? ?頻率自適應和幅度自適應，這樣的前端就可將系統的接收中心頻率和帶寬自適應到輸入信號的頻率和帶寬，其實就是對輸入信號進行一次預分選、預濾波，剔除對接收系統毫無作用的信號;同時對大信號自動減小增益，對小信號增加增益，提高系統的動態范圍;而且可以對干擾信號進行壓制。 -
Design a kind of sub - optimum digital prefilter. through the simulation of timing recovery loop which is n ' t added prefilter and which is added prefilter, discuss the convergence characteristic and compare the relation between timing jitter and signal to noise ratio, the relation between timing jitter and noise bandwidth of loop, the relation between symbol error ratio and signal to noise ratio
通過對加預濾波器后的定時恢復環的模擬，討論了環路的收斂情況，比較了所設計的數字預濾波器和無預濾波器時環路定時抖動與信噪比、定時抖動與環路噪聲帶寬、誤碼率與信噪比的數量關系，證實所設計的數字預濾波器對減少定時抖動非常有效。 -
Prefilter and postfilter plugins are very similar in concept ; where they differ is in the execution - - more precisely the time of their execution
前過濾符號與后過濾符號外掛在概念上是很相似的；此兩者的不同是在執行的時候- -更正確的說法是在執行的時間。 -
These results prove that the design method has great affection to reduced timing jitter. at the same time, simulate the convergence characteristic of timing recovery loop which is added prefilter when the input qam
同時還模擬了加預濾波器后定時恢復環路在有載波誤差、交叉串擾情況下的收斂情況，證明了所設計定時恢復環路是正確的。 -
The orthogonal quasi - interpolation filter preserving approximation order designed by hardin and roach maintain the orthogonality and approximation order of central filter bank and give a proper direction in the design of prefilter
Hardin和roach設計的具有逼近階的正交擬插值預濾波器保持了中心濾波器組的正交性和逼近階，為預濾波器的設計指出了一條正確的方向。 -
Jfpi prefilter element
Jfpi濾元 -
The first parameter to the prefilter function is the template source, possibly modified by some other prefilters
預濾器函數的第一個參數是模板源文件，該文件可能被其他一些預濾器修正過。 -
It is impotent to design the prefilter which maintain the orthogonality and approximation order of central filter bank
在預濾波器的設計中，能夠保持中心濾波器組的正交性和逼近階是非常重要的。 -
Design of prefilter of multiwavelets was discussed. for the prefilter designed by xia with interpolating property of ghm multiwavelet, a modified interpolating prefilter was presented
針對于xia等基於ghm多小波的插值特性而設計的預濾波器，我們給出了一個改進的插值預濾波器。 -
More researches on the theory and application of multiwavelets need to be carried out. this paper makes some systematic researches on the theory and application of multiwavelets, especially on design of multiwavelets system and its prefilter
本文主要針對多小波的理論及其在圖像壓縮方面的應用，對多小波系統的設計及前濾波器作了系統深入的研究。 -
Because the qam signal which is small roll - up factor has big timing - error jitter in steady state that result in big timing jitter, an expression of impulse response for digital prefilter is deduced and a kind of sub - optimum design method for digital prefilter is proposed in this paper
針對匹配濾波器滾降因子較小的qam信號的穩態定時誤差信號抖動較大，而造成較大定時抖動的情況。推導了一種用於減少定時抖動數字預濾波器的沖激響應表達式，並且提出一種數字預濾波器的設計方法，設計了一種優化數字預濾波器。
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