signal carrier 中文意思是什麼
signal carrier
解釋
信號載波-
The video signal is directed to the crt through a sound trap which eliminates the sound-carrier frequency.
視頻信號通過聲音陷波電路，消除聲音載波頻率，直達CRT。 -
Research on ds bpsk signal carrier estimation methods
信號載頻估計方法的研究 -
Whatever it is radar, eccm equipment, communication equipment or instrument, frequency source with high stability is needed to guarantee the quality of carrier signal
無論是雷達、電子對抗，還是通信、儀器設備等都需要高穩定度的頻率源，以保證載波信號的質量。 -
After study on the technology of probe head of the optical fiber, a biosensor for determination of cholesterol which based on fluorescence quenching and adopted phase shift & phase lock technique to detect the change of light intensity was developed, in this biosensor, the cellulose acetate cod enzyme membrane was took as sensitivity basic dollar, ru ( phen ) 32 + was took as indicator of oxygen and furcated optical fiber as conduct carrier of light signal
通過對光纖探頭組裝技術的研究，以醋酸纖維素cod酶膜為敏感基元，釕（ ） -鄰菲咯啉為氧指示劑，分叉光纖為光信號傳導載體，採用相移法和鎖相放大技術設計了一種基於熒光猝滅原理的測定膽固醇用的生物傳感裝置。 -
With the continuous developments of modern radar technology and anti - electronic technology, the electromagnetic environment hade become more complicated, the transmitted signal ' s carrier frequency had become higher, frequency band occupation had become wider, the form of the signal had become more concealment
數字信號處理相對于模擬信號處理的優越性主要表現在精度高、靈活性強、可靠性好、易於大規模集成及存儲等，所以正受到工程界越來越多的關注。 -
Autonomous formation flyer technology developed by jpl is used three receiving antennas and one transmitting antenna are installed on each satellite each of satellites can transmit analog gps signal but more accuracy. the multiple receiving antennas on the every satellite are capable of acquiring precise pesudorange and carrier phase signals transmitted by other satellite and compose of a kind of onboard augment gps system
在文中，利用jpl提出的自主編隊飛行技術aff ，在每個編隊衛星上安裝一個發射天線和三個接收天線，每一個發射天線可以發射類似於gps的高精度偽距和載波信號，與其它衛星上的多個接收天線構成星載擴展gps系統。 -
In this case the information source provides an electrical signal to a transmitter comprising an electrical stage which drives an optical source to give modulation of the lightwave carrier
在這種情況下，信源給發射機提供一個電信號，發射機中的電路驅動光源以實現對光載波的調制。 -
The major researches in this thesis include : applying the digital signal processing technology and theory of signal detection & estimation to estimate carrier frequency of the sensing signal that reflects the measurand ; implementing the algorithm in labview, a virtual instrument development platform
本文的主要研究內容是：運用數字信號處理技術和信號檢測、估計的基本原理從無源、無線saw諧振器型傳感器的傳感輸出信號中提取出反映被測量的信號主頻，並在虛擬儀器軟體開發平臺labview上實現了測量演算法。 -
The research on carrier spectrum, modulation schemes and signal codes of plc networks has received much attention, while the mac protocol of plc networks is usually adopted from general - media computer networks
目前國際上注重研究plc網路的載波頻率、調制方式、信號編碼等關鍵技術。而對于plc網路的mac協議，卻通常採用修改的常規計算機網路的mac協議。 -
In the thesis, i introduce the theory and application of gps carrier phase measurement, analyze the errors in the observation of gps signal, study the ways to reduce these errors, specially for the error caused by multipath
論文介紹了gps載波相位測量技術的原理和應用，分析了gps觀測量的誤差，研究了減小和消除各種誤差的方法，重點是減小多徑效應的影響。 -
Carrier signal generator
載波信號發生器 -
This signal is used to indicate whether a modem is connected to a working phone line and a data carrier signal is detected
此信號用於指示是否數據機已連接到正常工作的電話線並檢測到數據載波信號。 -
In digital communication, a transmitted carrier signal that consists of the12 single sidebands being sent over the transmission circuit
在數據通信中，一種傳輸載波信號，由傳輸電路上發送的12個單邊頻帶組成。 -
4. in data acquisition system, the application of phase - locked and synchronous detection reduce the cost of the whole system and improve the sensitivity. carrier signal and modulation signal achieve entirely synchronous too
數據採集系統採用鎖相技術、同步檢波的原理，降低了整個系統的成本，提高了靈敏度，並使得載波信號與調制信號完全達到同步。 -
As a new branch of information security, information hiding technology including digital watermarking and steganography aims to protect intellectual property rights of multimedia contents and to send secret messages under the cover of a carrier signal
信息隱藏是信息安全領域中的一項新興技術，主要有數字水印和數字密寫兩大分支，分別用於多媒體數據的版權保護和隱蔽通信。 -
There are many ways of modulating signal about bpsk such as castas loop, square loop, etc. usually the carrier wave is put forward firstly, then the purified carrier wave is used to demodulate the output data ( all these things are usually completed in the same loop ). these methods have their strong points but at same times, it is difficult to design and achieve these ways
有關bpsk調制信號的解調方法很多，例如castas環，平方環等，這些方法一般都是先提取載波，然後用提純的載波去解調出傳輸的數據（大都在同一個環路內完成） ，這些方法的優點是顯而易見的，但是在某些條件下，這些方法的設計和實現卻很困難。 -
To utilize the advantages of dsp chips, the system should be computing sources economical. according to digital signal processing theory, the poly - phase fir can help reduce the workloads of the ddc / duc. therefore, adding the complex carrier mixers, the channelization system ( a method of using a single wideband facility to transmit many relatively narrow - bandwidth signals. by subdividing the frequency spectrum used in the wideband channel ) can be formed utilizing the characters of fft
為了使開發出的軟體可以適用於高速dsp器件開發，節省系統資源，課題首先從數字信號處理的理論進行分析，得出可以利用抽樣率轉換的數字濾波器的特點，即多相濾波實現數字上下變頻計算負擔的減小，之後進一步將多相濾波器與頻譜搬移部分結合，通過公式的推導，得出可利用快速傅立葉變換的特點實現多路信號的通道化發射和接收的處理模型。 -
The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail
首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。 -
With the rapid development of the carrier phase differencing technique and digital signal processing hardware, it is possible to implement real - time processing of gps based attitude determination system
隨著載波相位差分技術和數字信號處理硬體的快速發展， gps姿態測量的實時處理成為可能。 -
How to understand the correlation of parameters and its influence in communication system is the essential task in the research of communication system. through carrying on research and analysis to various kinds of adaptive algorithms, this paper is focus on the application of the algorithm in demodulation in the digital signal carrier transport. the dpsk signals demodulation basing on adaptive algorithm is improved on and a new method is presented for qdpsk and qam signals demodulation by adaptive filter
簡單分析討論了ask 、 fsk的自適應解調方法，由於本研究的戰術電臺中信號處理採用的是psk方式，所以本文重點研究了利用ndlms演算法對dpsk信號的解調方法，並且結合調制信號中正交載波的特點，提出了qdpsk信號自適應解調方法，在提出上述方法后，本文通過模擬進行了驗證。
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