signal mixture 中文意思是什麼
signal mixture
解釋
復合信號-
Our previous studies showed existence of apoplast cam in the plant cell and cam had many extracellular functions. so it supposed cam may be one of important extracellular polypeptides and trigger the intracellular signal transduction by binding the receptor. in this study, radiolabelled ligand is used to investigate the binding characteristic of cam and a. thaliana protoplasts. and chemical crosslinking is employed to explore binding proteins in the membrane. at first, ( 35 ) ~ s - cam was produced using ( 35 ) ~ s - labeled amino acid mixture in e. coli. sds - page and autoradiograph indicated high - purified, high - specific radioactivity ( 35 ) ~ s - cam was obtained. electrophoresis of ( 35 ) ~ s - cam is the same as that of unlabeled cam with ca ~ ( 2 + ) or egta ; a quatitive of protoplasts was prepared by enzymolysis
首先，用~ （ 35 ） s標記的氨基酸混合物喂養工程菌成功地制備了~ （ 35 ） s標記的擬南芥鈣調素（ ~ （ 35 ） s - cam ） ， ~ （ 35 ） s - cam純度高、放射活度高、 ca ~ （ 2 + ）與egta存在時的電泳行為與未標記cam相同，可作為一種高靈敏性的探針用於進行受體學分析實驗；用擬南芥種子誘導愈傷，通過酶解制備了大量原生質體。 -
Firstly introduced the basic theory and method with which the analog signal can be convert to digital form, including sampling theory and course, quantification and quantification error, coding, beside those we discussed some applications of sampling technology, the reason of frequency mixture and the method to eliminate it chapter 4 introduced analog mux - switch, for the reason of simpleness we only introduce it briefly
從第3章開始，對數據採集的基本理論進行討論，首先介紹了模擬信號數字化處理中的基本理論、方法，包括采樣過程、采樣定理、量化與量化誤差、編碼，還討論了幾種采樣技術的應用、頻率混淆產生的原因及消除措施。第4章，介紹了模擬多路開關。 -
But the signals mixture problem can be brought on by the drop of adaptive performance caused by using subarray and by overmany radiation sources. so bbs is used to solve the problem. this dissertation focuses on subarray architectures and the algorithms of ica, and proposes a new and more practical subarray architecture and a more suitable algorithm to separate radar signal
同時針對採用子陣法導致自適應性能下降以及現代雷達信號環境多個輻射源等問題引起信號混疊現象，論文採用盲分離來對雷達信號進行分離處理，並針對雷達信號的特點提出一種適用的演算法。 -
However, when the input noise is the double - peak gaussian mixture noise, the noise can improve the signal correlation for the subthreshold signal and the suprathreshold signal, i. e., both sr and suprathreshold stochastic resonance ( ssr ) often occurs
而當輸入噪聲為雙峰高斯混合噪聲時，不僅輸入信號在閾下時隨機諧振現象有時存在，而且輸入信號在閾上時噪聲往往也能改善信號的相關性，即閾上隨機諧振現象存在。 -
Bss problems are to separate or extract individual source signal from a set of mixture signals. except that the source signals are assumed to be independent, no apriori information is known about the mixture signals
Bss問題是從某類混合信號序列中分離或估計各個未知源信號的過程，其中假設源信號是相互統計獨立的。 -
The main contents of this thesis include : ( 1 ) summarize and analysis of the theories on vibration transmission through rolling element bearings ( 2 ) based on the threshold setting and signal ’ s statistical approach, a method for solving the problems of denoise was developed ( 3 ) using sparsity and clustering, the method and hypotheses for underdetermined blind source separation was studied ( 4 ) the method based on potential function clustering was given for underdetermined blind source separation of noisy signals based on the assumption that the input distribution is sparse and the mixture procedure is linear, the attenuation matrix and the delay matrix were estimated by clustering. the approach was experimentally illustrated for the case of m = 2. the separation of the signals from bearing test bed proved that the given methods are available and reliable
在需求分析和研究現狀分析的基礎上，本論文針對如下內容進行了重點研究: （ 1 ）以滾動軸承為例，對旋轉機械振動信號的傳輸進行了歸納分析; （ 2 ）通過設定某一門限並研究信號間的統計特性，研究了旋轉機械振動信號的盲源分離過程中噪聲消減策略; （ 3 ）應用稀疏信號分析和聚類分析方法，對盲源分離中欠確定問題的假設條件進行探討並對分離方法進行了分析; （ 4 ）採用基於勢函數聚類分析的方法，研究了欠確定前提下含噪聲測量過程中信號盲源分離方法。 -
After reviewing some statistical models proposed to better characterize the host signal in dct, dwt and spatial domain, we describe the statistical property of host signal using gaussian scale mixture distribution, which is more general and flexible. we also present a new method for estimating the parameters of generalized gaussian distribution rapidly
研究了細節分量的統計模型，包括平穩高斯模型、平穩拉普拉斯模型、平穩廣義高斯模型、局部平穩的高斯模型和高斯尺度混合模型，提出了一種廣義高斯模型中形狀參數的快速估計方法。 -
The performance of existing blind source separation methods is highly affected by the non - linear contrast functions that are selected according to the distribution of original signals, and the separation results are not always ideal, especially for the mixture of super - gaussian signal and sub - gaussian signal
摘要針對現有盲源分離演算法的性能依賴于對比函數選擇的現象，提出了一種基於遺傳演算法的盲源分離演算法，該演算法直接從信號的樣本序列中估計出信號的概率分佈，解決了信號間互信息的求解問題。
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