signal component 中文意思是什麼
signal component
解釋
信號分量-
Purpose ependyma is lined in lumen surface of brain ' s ventricles which is composed of single ciliated cuboidal epithelium and a major component of brain csf barrier ( bcb ) and blood csf barrier ( blcb ). it plays an important role in production of csf, signal traiisttiission, maintainance of homeostasis within the brain, and so on, and a focus of developing pathway both for administration of some drugs into the brain and treatment of brain ' s diseases. ependyma may be specified in some sites perhaps owing to functional need and modified its structures of cells and tissue, which has been called circumventricular organs ( cvos ) since 50 of 20 century
目的室管膜是襯覆在腦室內面的單層纖毛立方上皮，是腦-腦脊液屏障，血-腦脊液屏障的主要組成部分，在腦脊液的產生，腦內信息的轉導，維護腦的微環境等方面具有重要的作用，也是腦內給藥和腦疾病治療新途徑開發關注的焦點之一；室管膜在一些部位可能是由於功能的需要其細胞和組織結構發生了特化，在二十世紀五十年代人們將這些特化的室管膜稱為室周器官。 -
Then following reality constituent of engine and connecting component interface, a nonlinear signal cylinder engine model has been created, though fire interval and fire order, a control - oriented four cylinders engine is build. following dynamometer is seen as load, performance of engine is simulated and researched under the condition of constant torque and speed, validation of the math and simulation model have been confirmed by comparison result between simulation with test result of engine performance simulation software dyno
按照發動機的實際組成，根據各部件的介面類型連接模型庫中的部件，建立了單缸發動機非線性模型，在此基礎上，依據發動機實際發火間隔和順序，建立了面向控制的四缸汽油機模型，並以測功器為負載，通過恆轉矩和恆轉速方式進行了發動機性能模擬和研究，模擬結果和發動機動力性能模擬軟體dyno測試結果的對比驗證了數學模型和模擬模型的正確性。 -
High frequency radar is also a high frequency ground wave super resolution radar used on the seaside, and meantime it is one of projects of national 211 for building subject. this paper based on high frequency radar and modern signal processing describes the component of the high frequency radar on function and hardware. the signal that the radar system used mostly decides the capability and the complex of the radar
雷達系統所用的信號體制、信號形式決定了在很大程度上決定了雷達的性能指標，雷達系統的復雜度，本文主要研究基於軟體高頻雷達的多體制信號的數字化產生與接收，目的在於產生一種或者多種能夠軟體高頻雷達所適用的信號，並且這種信號不會給小型化的系統處理帶來過高復雜性。 -
Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced
混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。 -
In the thesis, a signal processing scheme of polarization - insensitive fiber optic michelson interferometric magnetic sensor is described : making the interferometer work near the quadrature with closed loop controlling working point method, the fundamental frequency component of the magnetic field sensing signals can be detected to measure the input direct current ( dc ) magnetic field by phase sensitive demodulation
本文主要介紹了偏振無關光纖michelson干涉型微弱磁場傳感器信號處理的方案:通過閉環控制工作點演算法使干涉儀工作在正交工作點處，再利用相敏檢波演算法提取傳感器輸出信號的基頻分量，以測量直流磁場的大小。 -
In the digital inverter, we adopt the technology of digital dynamic waveform correction, which can compensate the delay between control signal and output waveform, and ensure the accuracy of control. at the same time, the technology of digital dc component adjustment was introduced, by which we can exactly compensate the control signal, and realize adjusting dc component of output on the premise of output performance
在基於dsp的數字變換器平臺中，採用全數字波形校正技術，完全補償了控制信號延時、功率管開關延時以及死區時間對輸出spwm波形所產生的畸變，充分保障了變換器控制的準確性；採用數字直流分量調節技術，可以精確地對控制信號進行補償，在充分保證輸出性能的前提下，實現了輸出直流分量的調節。 -
Based on the method, this dissertation deals with several kinds of signals including cosine wave ( cw ), linear frequency modulated ( lfm ) and multi - component signal, furthermore the systematic comparison of estimation effect among cwt and several other usual methods as well cramer - rao bound ( crb ) is given
基於上述方法，文中分別對單頻矩形脈沖信號、線性調頻脈沖信號以及多分量信號進行了瞬時頻率估計，並與其他幾種常用瞬時頻率估計方法的性能以及crb進行了系統比較。 -
During the instantaneous frequency estimation of lfm, there exists some error in the edge, so in the dissertation, a fitting method is proposed to modify it. from the computer simulation, the following result is obtained : for cw, the method based on cwt is most effective, and with the snr rising, the error curve of it is more and more closer to crb. for lfm, the method based on wvd gives the best result, and the effects of cwt and stft are similar for multi - component signal, compared to stft and wvd, cwt is a better choice
通過模擬發現，在單頻回波的瞬時頻率估計中，基於cwt的方法最為有效，隨著信噪比的提高，其均方誤差曲線越來越接近克拉美?羅界；在線性調頻回波的瞬時頻率估計中， wvd法得到的效果最好，而cwt與stft法的估計效果比較接近；在多分量信號的瞬時頻率估計中，相對于stft和wvd法， cwt法是一個更好的選擇。 -
Numerical simulation signal and vibration acceleration signal of a roughing mill main drive speed reduction unit have been decomposed by using empirical mode decomposition algorithm ; each component has been carried on spectral analysis
摘要運用經驗模式分解演算法對數值模擬信號及某軋鋼廠粗軋機主傳動減速機振動加速度信號進行了分解，從而得到若干個基本模式分量，對每個模式分量進行了頻譜分析。 -
Quorum - sensing systems can be divided into two paradigmatic classes : luxi / luxr - type quorum - sensing systems in gram - negative bacteria which produce acyl - homoserine lactone ( ahl ) autoinducers, and oligopeptide / two - component - type quorum - sensing ciruits in gram - positive bacteria which produce autoinducing peptide ( aip ) autoinducers. in contrast to the two paradigmatic quorum - sensing systems, vibrio harveyi produces and responds to an ahl - type autoinducer termed ai - 1 and a novel signal molecule named ai - 2
Qs系統可分為兩種典型的類型，即革蘭氏陰性細菌的luxi luxr型qs系統，革蘭氏陽性細菌的寡肽雙組分型qs系統，分別以酰基高絲氨酸內酯（ acyl - homoserinelactones ， ahl ） 、寡肽（ autoinducingpeptide ， aip ）為信號分子。 -
Computer simulation results show that the proposed algorithm reduces the signal distortion and the reverberation which are caused by misadjustment errors in the adaptive filter and the correlated component of the speech in the reference signal compared with a conventional adaptive noise canceller ( anc )
模擬結果證明nanc演算法有效克服了影響傳統自適應噪聲抵消系統（ anc ）性能的一些瓶頸，如兩輸入中的非相關噪聲，參考輸入中的信號成分與自適應濾波器失調誤差而產生的信號失真、回響等情況。 -
This show us a very useful signal in studying the systematic property in the early stage of the evolutive colliding system, that ' s, a non - zero flow component of those particles observed by experiment could be interpreted as a signal for partonic flow
因此在碰撞早期產生的重子數輸運是高能重離子碰撞中的一個重要的物理量，它影響著初態部分子的平衡，粒子的產生，系統的熱力學或化學平衡以及集體膨脹等過程。 -
The device can protect the large - scale synchronous motor perfectly. the protection device makes the mature theory such as the over - current value detection, symmetrical component principle and so on as protection criterions and uses the advanced digital signal processor in the device
該保護裝置運用較為成熟的保護理論和先進的數字信號處理器，把判過電流幅值與對稱分量法理論相結合，準確實現同步電動機保護所要求的各項保護功能。 -
Multi - channel deconvolution, based on multi - channel signal analysis, is presented to recover receiver function from three - component teleseismic p waveforms clustered within certain backazimuth and epicenter distance, to increase the resolution of receiver function. wavelet inversion is also introduced to broadband receiver function, to solve for nonuniqueness cased by linear approximation of nonlinear problem, and broadband receiver function is decomposed into multi - resolution versions, and the inversion result for the low - resolution version is iteratively taken as the initial model for the high - resolution, and gradually obtain the inversion model for broadband receiver function
為克服廣義線性反演對初始模型的依賴性，並保持其快速收斂的特點，本文首次將小波變換引入到接收函數波形反演，將接收函數分解到不同的分辨尺度上，分別進行廣義線性反演，並將低解析度的反演結果作為高解析度反演的初始模型，漸近地獲取寬頻帶接收函數的模型，克服了非線性問題線性化帶來的非唯一性。 -
Combined harvester with yield - measuring system and gps navigation system is an important component of implementing " precise agriculture ", yield - measuring system is a key to " precise agriculture ". yield - measuring system mainly uses many sensors and gathers various kinds of relevant signal in order to reach to an function of monitoring unit area output in real time, as the basis of drawing the output picture
配備測產系統的聯合收獲機是實施「精確農業」的重要物質手段，測產系統又是它的關鍵，測產系統主要是應用多個傳感器，將各種相關信號進行採集，以達到實時監測單位面積產量的功能，作為繪制產量圖的依據。 -
The main achievements are as follows : the theory models of defect mfl field are set up ; based on the magnetic dipole model and finite element model, the distribution of defect mfl field is simulated in the dissertation ; the component of flux density ( magnetic filed ) parallel to the surface of pipe is detected by a circumferential array of hall probes ; the factors including defect geometry parameters, defect surface angle and shape, pipe material, field intensity, vehicle velocity, background magnetization, operating pressure and remanent magnetization and so on influence the mfl signal characteristics
採用霍爾元件作為缺陷漏磁檢測傳感器，獲得管道軸截面漏磁場切向分量的漏磁信號；研究了缺陷外形尺寸、缺陷傾角和形狀、管道材質和磁化強度、檢測儀移動速度、管道背底磁場、管內壓力和剩磁對漏磁信號的影響。提出了各通道增益放大、各路漏磁信號偏離調整、波形微分、數字濾波和平滑等漏磁信號預處理方法；分析了等空間采樣的漏磁信號轉換為等時間采樣信號的必要性，研究了漏磁信號的小波去噪方法。 -
Caveolae domains are found in most cell types, particularly in terminally differentiated cells. caveolin - 1, as the primary structural component ofcaveolae, plays a pivotal role in many signal transduction passways by regulating signaling molecules and participates in many physiologic processes, including apoptosis, angiogenesis, and sperm capacitation
小窩蛋白- 1在多條信號轉導通路中發揮著樞紐作用，通過調節這些信號轉導通路相關信號分子的活性，參與調節細胞凋亡、血管發生、精子發生以及精子獲能等生理過程。 -
Considered the tiny quantity of the hydrogen, first we choose the gas chromatography technology to analyze the component of the work gas and to obtain the chromatography curve. then, treat the curve with the adaptive aperiodic stochastic resonance algorithm in order to eliminate the apparatus noise submerged in the tiny hydrogen signal. at last, calculate the quantity of the hydrogen based on that the quantity varies directly as a function of the area of the chromatography curve
考慮到氫的含量非常微弱，在測量時採用氣相色譜法，並通過自適應非線性隨機共振演算法對色譜信號進行處理，以便提取出被儀器噪聲淹沒了的微弱氫信號的色譜曲線，最後根據氫含量與其色譜峰面積呈正比計算出工作氣體中的氫含量。 -
Such organic combination of the determined signal analytical method for potential field analytical continuation with the stochastic signal analytical method for principal component analysis provides a new channel for the inversion of geophysical potential field
這種將位場解析延拓的確定信號分析法與主成份分析的隨機信號分析法有機聯合，為解決地球物理位場反演問題提供了一種途徑。 -
For those biological signals like echo of bat or whale, as well as man - made system signals like radar or sonar signal, the instantaneous frequency of signal component contains important information and could be used for signal model parameters extraction. so that the proper choose of transformed domain and signal characteristic extraction method is of crucial important. the ridge extraction method used for signal characterization was first proposed in the 1990s, it ' s based on the study of the phase of the wavelet ( or other linear ) transform
對于許多實際的信號，如蝙蝠發出的超聲波、鯨魚的叫聲等生物信號，以及雷達、聲吶等人造系統產生的信號而言，信號瞬時頻率的變化規律反映了信號重要的特徵，並且也是信號模型中關鍵的參數，因此選擇合適的變換域提取信號的瞬時頻率信息，並選擇合適的方法對信號進行重建是很重要的問題。
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