carrier synchronization 中文意思是什麼
carrier synchronization
解釋
載波同步- carrier : n 1 運送人，搬夫；負荷者；使役，〈美國〉信差，郵遞員；送報人；〈英國〉運輸行，運輸業者。2 傳書鴿...
- synchronization : n. 同時；同時性；【物理學】同步，同期；【電影】同期[步]錄音，配音譯制。
-
What ' s more, some improved carrier synchronization algorithms for high order qam signals are described
最後，討論了適合高階qam信號特點的載波同步方法。 -
This thesis makes a deep research of digitized carrier synchronization technology and the algorithm ’ s software implementation
本文對數字化載波同步技術及其演算法的軟體實現做了深入的探討與研究。 -
In this paper, the design and implementation of the carrier synchronization technology in the integrated anti - interference data transmission system have been investigated
本文對綜合抗干擾數據傳輸系統的載波同步及實現進行了研究。 -
To achieve fast acquisition with only a few symbols, a joint structure for clock and carrier synchronization with non - data aided ( nda ) mode is presented
摘要為了實現解調中的快速同步，本文給出了一種聯合結構下無數據輔助載波同步和符號同步的方法。 -
In chapter 4, the circuit of the carrier synchronization unit is implemented on fpga, the resistor transistor logic ( rtl ) schemes are presented
第四章在fpga平臺上實現載波同步單元電路，並給出了實現后的fpga資源消耗、寄存器傳輸邏輯（ rtl ）原理圖。 -
The principle and structure of pll ( phase - locked loop ), including fll and loop filter, are analyzed and described. the module of carrier synchronization in the all - digit ds - qpsk receiver was carried out in the fpga chip. the problem about the estimation and track of the correlative carrier frequency under high dynamic circumstances was resolved very well
針對某遙測遙控全數字接收機的研製，對相干載波同步中的鎖相環、鎖頻環、 dpll 、本地nco等進行了詳細的分析和優化設計，在fpga上實現了高動態全數字ds - qpsk接收機中的載波同步模塊，解決了大范圍和動態多普勒頻移下接收機的相干載波提取與跟蹤問題。 -
There are two uncertain factor about it : the phase of the pn code and the doppler - shift. after capturing the received signal successfully, the traditional ds receiver always uses a delay locked loop ( dll ) to synchronize the pn code and then uses a costas loop to realize the carrier synchronization. this complex closed - loop structure not only take long time to realize the synchronization, but also has the defect of “ hang up ”
傳統的擴頻接收機通常在捕獲偽碼信號后利用遲早門鑒相的延時鎖定環來實現偽碼的精同步，解擴后利用科斯塔斯環實現載波同步，這種閉環結構不僅同步時間長、結構復雜，而且鎖相環還存在所謂的「 hang - up 」現象。 -
It first introduces the mpeg - 2 standard and the grammar structure of the ts. then it describes the principle of synchronization and multiplexing in digital communication. the synchronization comprises the carrier synchronization, bit synchronization, group synchronization and network synchronization while the multiplexing includes bit multiplexing, word multiplexing and frame multiplexing
本文首先介紹了mpeg _ 2標準及其mpeg _ 2傳輸流語法結構，接著闡述了數字通信中的同步和復接理論，同步包括載波同步、位同步、群同步和網同步，復接包括按位復接、按字復接、按幀復接。 -
Digitalizing includes modulation mode digitalized and equipment all digitalized. aiming at this characteristic, this thesis research in carrier synchronization and signal demodulation of new generation space tt & c system
數字化包括調制方式的數字化和設備的全數字化，本文就結合這一特點對新一代航天測控系統中載波同步和信號解調進行了研究。 -
Phase - lock part of the system was simulated in system view that is a eda tool, including picking - up carrier synchronization algorithm and designing filter, etc
系統採用相干解調方法，載波同步採用costas環，在系統開發過程中，利用eda工具systemview對鎖相部分包括載波同步演算法和數字濾波器設計等內容進行了模擬分析。 -
For carrier synchronization, a method of estimating the ofiset of carrier frequency has been presented, which has a more broad range of the estimated oflset of carrier fiequency and more accurate result man other methods, then, a method of estimating the carrier complex phase has been presented, which corrects directly the ofiset of carrier phase
對于全數字接收機中的載波恢復，先提出了一種估計范圍寬、估值精度高的載波頻偏估計演算法，接著介紹了一種可以直接對載波相位偏差進行補償的復相位估計方法。 -
The task of carrier synchronization is tracking the frequency and phase of a carrier wave, the most effective means for tracking small frequency deviation and the phase of a carrier is using the phase - locked loop ( pll )
載波同步的任務就是跟蹤載波的頻率和相位，對于載波相位及小頻偏的跟蹤，最有效的方式是使用鎖相環。 -
In chapter 3, a carrier synchronization method is put forward, parameters and design of each part of the afc loop are described in detail, at the same time the carrier synchronization unit has been simulated using matlab language and its performance analyzed. simulation results show it efficient
第三章基於綜合抗干擾數據傳輸系統中擴頻同步、自適應陣收斂和載波同步的關系，提出一種適合系統並利於fpga實現的載波同步方法，詳細闡述了自動頻率控制（ afc ）環路主要部件的參數及電路設計，並對載波同步單元進行了matlab模擬和同步性能分析。 -
Then time domain synchronization including symbol, frequency and carrier synchronization algorithms is discussed according to the characteristics of frame structure in merged scheme. at the same time, pointed out its merit that high rate of spectrum utilized and rapid synchronization retrieved. and simulation and much improvement are done to realize the algorithms in project
然後根據融合方案的幀結構的特點，分析和探討了時域同步演算法，包括符號同步、載波頻率同步和采樣同步演算法原理，指出時域同步有頻譜利用率高，同步恢復快等優點，並對其進行了工程可實現的改進和模擬。 -
The algorithm of cross product automatic frequency control ( cpafc ) and frequency bin technology is used for tracking larger frequency deviation. the paper gives out a scheme of digitized carrier synchronization loop, in which the digitized costas loop is used as a basic part while cpafc and frequency bin technology as auxiliary
在此基礎上提出了數字化、軟體化的載波同步環路演算法方案，主要採用數字化科斯塔斯環的形式，並加以自動頻率跟蹤演算法和頻率開槽技術的輔助來實現載波同步。 -
In chapter 1, the basic principle and structure of the integrated anti - interference data transmission system are introduced. in chapter 2, the theory of maximum likelihood ( ml ) carrier synchronization parameter estimation ( frequency estimation and phase estimation ) are expatiated, and the closed - loop recovery methods ( phase - locked loop, pll ) and some other arithmetic in common use are introduced
第二章對最大似然（ ml ）載波同步參數估計（頻率估計和相位估計）理論進行了闡述，對常用的閉環恢復法即鎖相環（ pll ）法和一些載波同步參數處理方法進行了介紹，並對常用的載波頻率估計方法作了分析比較。 -
Take the hoc based blind modulation detection algorithm as an example, the relationship between the blind modulation detection algorithm and synchronization is investigated. an unproved detection algorithm robust to frequency offset is proposed which solves the problem caused by the error in carrier synchronization. how to synchronize a received signal with unknown modulation type is studied and a blind algorithm to estimate symbol timing of the signals with unknown modulation type is presented
研究了載波同步和碼元定時同步與調制方式盲檢測演算法的關系；以自適應單載波中高階累積量調制方式盲檢測演算法為例，對于載波同步誤差引起的頻偏問題，提出一種基於頻偏穩健的mdpsk信號調制方式盲檢測演算法；對于未知調制方式信號的定時同步問題，提出一種盲定時估計演算法，該演算法可以估計mdpsk和mqam信號的定時同步信息，實現數字信號的同步分類；提出了一種基於調制方式盲檢測的自適應接收機結構，把調制方式盲檢測，信噪比估計和同步解調聯合起來進行，實現調制方式隨通道質量而自適應變化的信號的正確接收。 -
Down link channel of new generation space tt & c system generally select qpsk as its modulation mode. firstly, carrier synchronization of qpsk is studied in the thesis, and then the key question - carrier synchronization in low snr and severe doppler frequency shift is systemic analyzed. in addition, different existing project are analyzed and compared
新一代航天測控系統的下行通道一般選擇qpsk作為其信號調制方式，本文首先研究了qpsk的載波同步問題，對其中的關鍵問題? ?低信噪比及大多普勒頻移情況下的載波同步進行了系統的分析，對現有的不同方案進行了分析與比較。 -
A new carrier synchronization technique for orthogonal frequency division multiplexing system
正交頻分復用系統中新的載波精同步演算法 -
Finally, the paper gives out a scheme of digitized carrier synchronization loop for software defined radio receiver which is based on the hardware platform composed of fpga and dsp
最後給出了一種用fpga與dsp組成的硬體平臺實現軟體無線電接收機載波同步環路的方案。
分享友人