載波通信法 的英文怎麼說

中文拼音 [zǎibōtōngxìnfǎ]
載波通信法 英文
trgerfrequenzverfahren carrier frequency method
  • 載 : 載Ⅰ名詞（年） year : 一年半載 six to twelve months; six months to a year; 三年五載 three to five ...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 通 : 通量詞（用於動作）
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 載波 : signal carrier; carrier wave; carrier: 3路載波 three channel carrier載波傳輸 carrier transmission...
  • 通信 : communication; communicate by letter; correspond
  1. Firstly, the airborne electromechanical system, the development of bus protocol, power line channel and power system are described in the dissertation ; secondly, the algorithm of qpsk and root raised cosin are discussed ; thirdly, the designation of the hardware and software of the modem board, based on qpsk, built up with dsp and cpld are given. the high - speed data transporting card of airborne electromechanical communication system, which is based on plc, are put forward in our country

    本文介紹了飛機電力線載波數據通信系統的結構，並對低壓電力線的通道特性進行了分析；對qpsk調制演算法及均方根升餘弦低通濾波演算法進行了詳細論證；設計出基於qpsk的調制解調模塊，並在此基礎上，研製出以dsp和cpld為最小系統的調制解調硬體電路板，開發了調制解調模塊電路板的應用軟體程序。
  2. This thesis researched the time synchronization method for 2d - ss system, and deeply discussed the bit error rate ( ber ) performance of multicarrier domain spread spectrum chip - level differential detection ( mc - ss - cldd ) in the presence of multi - user interference

    本論文從多載波擴頻通信系統出發，提出了廣義二維擴頻系統的同步演算法，並對多載波頻域擴頻碼片級差分檢測技術在多用戶情況下的系統性能進行了深入的研究。
  3. The potential applications of amr include both civil and military communication, especially non - cooperative communications and communication confrontation, such as identifying signals, supervising signals, distinguishing interference, electronic confrontation, analyzing military threat, etc. on the basis of our analysis to the existing research on feature abstraction, the related feature abstraction methods are optimized in this paper, resulting several effective methods such as the feature abstraction based on transformation domain, stepped voltage level analysis, normalized carrier - free spectral energy analysis, squared signal and fourth powered signal analysis, etc. both the decision theory based on recognition algorithms and the artificial neural network ( ann ) based on recognition algorithms is analyzed, and the former is selected as it is more appropriate for this research

    調制類型的自動識別廣泛應用於民用通信與軍用通信，尤其是對于非合作性通信、通信對抗，比如：信號確認、信號監控、干擾辨識、電子對抗、軟體無線電、電子救援、通信對抗、軍事威脅分析等。本論文在分析現有研究的基礎上，借鑒了已有的特徵提取方法，對相關調制類型特徵提取方法進行了優化，使用了一些有效的方法，如基於變換域特徵提取方法、梯層電平分析方法、剔除載波后的歸一化頻域能量分析方法、信號平方后的頻譜分析方法、信號四次方后的頻譜分析方法等。通過對基於決策理論和基於人工神經網路兩種識別演算法進行分析，本論文選擇了較適合的基於決策理論的識別演算法。
  4. According to the principle of spread spectrum communication, the anti - interference performance of the technology is discussed and the composition of power line spread spectrum communication is described. based on the spread spectrum technique, a method which is low cost, high communications quality and low bit error for power line carrier communication using single - chip software programming is proposed

    利用擴頻通信原理，分析擴頻通信的抗干擾特性，在此基礎上，闡述了電力線載波通信系統的基本結構，提出了一種利用軟體編程實現電力線載波擴頻通信的方法。該方法不增加硬體成本，即能達到提高通信質量、降低誤碼率的目的。
  5. In the paper, prescale technology, interpolate method, averaging method and multiple period synchronization method are used to measure the frequency accurately. diode demodulating technology, and power attenuated method or probe coupling & water load technology are employed to measure the power of high power microwave. isothermal technology is used to improve the stability of demodulator and to expend the range of square linear region

    本文採用預分頻法、內插法、多周期同步法、平均法實現了頻率的精確測量;利用二極體檢波技術，結合衰減法或探針耦合+水負載技術實現了大功率微波功率的測量;採用恆溫技術提高了二極體檢波器穩定度;完成了單片機串口通信協議設計和系統電磁兼容的分析和設計。
  6. The experiments with speech signals and carrier wave signals have been done to validate various bss methods proposed in the thesis and simulation results show that the algorithms are effective

    通過語音信號分離實驗和載波信號分離實驗對本文所研究的各種bss演算法進行了分析和驗證，取得了較為滿意的結果。
  7. This thesis presents the studies of the physical layer of power line communications, which is an ofdm - based transmission system. it gives feasible algorithms, and primary implementation of some key modules is discussed as well

    本文主要的研究對象使基於ofdm的電力線載波通信傳輸系統的物理層，對電力線載波通道進行了著重的分析，給出響應的估計演算法以及硬體實現模塊。
  8. Some viewpoints on the current state and development direction of plc communication

    電力線載波通信的現狀及發展方向的幾點看法
  9. In a tdma network, multiple users share the common medium ( or channel ) and bandwidth but different intervals of time. in case of the burst mode, the carrier of the modulated signal needs to be synchronized in a very short time. the common approaches such as a costas - loop and so on are no longer suitable any more

    在一個時分多址（ tdma ）通信網路中，多個用戶通過不同的時間段共享一個傳輸線路（或者通道）的帶寬資源，每個用戶只能在分配給自己的時間段內進行通信，這種突發方式信號的解調要求載波恢復要在很短的時間內完成，我們以往在連續信號解調器中採用的costas環等方法很難適應這種要求。
  10. Abstract : the constitution of radio - frequency carrier channel is described, the effects of the components on the radio - frequency signals are analyzed and corresponding solutions are proposed

    文摘:講述了組成高頻載波通道各個環節的結構及作用，分析了它們對高頻信號的影響，提出在非正常工作情況下的解決辦法。
  11. The optical channel models for airborne submarine laser communication are built. the multipath time spreading of signal pulse is studied. the waveform of received signals in receiver in submarine laser communication system is analyzed and simulated

    通過蒙特卡羅方法的模擬研究，建立了機載激光對潛通信的光脈沖傳輸模型，研究了信號光脈沖的時間擴展，分析並模擬了接收面上的接收波形。
  12. The spot responder system which is the necessary part of ctcs is analyzed in the dissertation and three key technologies of the channel in the responder system are researched. firstly, a new kind of rectangular plate magnetic inductive loop antenna is designed to transmit the power frequency. researching the near field inter - inductive characters, the relationship among the inductive efficiency, the perimeter and the conductor width of the antenna is found out

    本文在對ctcs中的點式應答器系統原理及組成進行分析和消化的基礎上，對系統中通道的幾個關鍵技術進行了詳盡的研究，主要分為三個方面: 1 ，提出並研製了新型的片式環形磁感應天線，並對傳輸能量載波的天線的近場互感特性進行了分析，得到互感效率隨天線的周長大小以及導帶寬度的變化規律，並通過計算機模擬和試驗對天線的近場波瓣圖進行了研究;通過分析寬帶匹配技術中的實頻法理論，設計了信號載波天線的寬帶匹配網路。
  13. The system can resolve the noise and impedance on the power line and obviously improve the abilities of anti - disturbance and successful rate of communication. at the same time, the software realy method and arithmetic is also introduced to settle the problem of attenuation and increase the distance of carrier communication, it can satisfy the need of remote reading meter system

    該系統有效地克服了電力線噪聲和阻抗變化等干擾因素，提高了抗干擾能力和通信成功率，同時提出軟體中繼的思想和演算法並加以實現，進一步抑制了線路衰減快的問題，使載波通信的距離增加，滿足了遠程抄表系統的要求。
  14. The forming of signals, such as those employed in telegraph transmission, by the interruption of a direct current or modulation of a carrier between discrete values of some characteristics

    斷開或接通直流電路或者在具有某些特點的離散值之間對載波進行調制而形成信號的過程和方法。如電報傳輸中使用的就是鍵控法。
  15. Other than traditionally theory analyze and discussion of digital correlator which is laid after demodulator, a scheme based on non - interrelated correlative dll will be discussed in this paper after referencing the theory and the result of simulation. the demodulated data and the information of carrier are not need in this plan. we sample the result of correlation between local sequences and the received signal, then realizing the code synchronization by software

    不同於一般的理論分析以及解調后數字相關器的討論，本文通過理論分析與模擬結果，選用了非相干相關同步的基本結構，並加以改進，不需要解調和載波的信息，將本地序列與接受信號直接相關后進行采樣，通過軟體的方法，實現同步。
  16. The performance test virtual system of power line carrier based on lonworks locale control technology. the syetem is structure of modularity, it can be used to test all kinds of parameters of network performance according to your different requirements. in the lonmaker operation system and distributed database management system, the software of the system adopts object oriented programme. it can be run in windows 2000 system credibly

    電力線載波通信網路性能虛擬測試儀基於lonworks現場總線控制技術，它採用了模塊化結構，可根據不同的測試需求，構成不同的測試系統。本虛擬測試儀的上位機軟體是在lonmaker操作系統和分散式數據庫管理系統microsoftsqlserver下採用的面向對象的編程方法開發完成的，可以在windows2000操作系統下可靠運行。
  17. The method was correlate search and fft carrier detection, which could solve the problem of the capture of the spread spectrum code under the condition of low snr and big frequency offset. we also put forward a method, shift receiving window and correlate with local sequence, which not only could solve the problem of symbol synchronization but also could acquire the statistics of the multipath. then we utilized the results of the channel estimation and the technology of rake receiver to decode the received spread spectrum sequence and acquire rude information

    方案中提出了：相關搜索、 fft檢測信號載波的方法，解決了低信噪比、大頻差條件下擴頻碼的同步捕獲難題；滑動相關完成位同步的方法，解決了低信噪比下的同步問題；在時域利用相關進行通道估計，然後利用rake接收技術完成相關解擴的方法，一定程度上解決了多徑衰落影響解擴性能的問題。
  18. Then test the time delay bandwidth and probability of error - code of power line carrier conmmunication network by plca - 22 protocol analyse apparatus to testify the validity of the system. at last i compare the results tested by the performance test virtual system and plca - 22 apparatus respectively, and analysis the virtue and shortage of the performance test virtual system, then bring forward the means to improve

    然後使用plca - 22協議分析儀對此電力線載波網路的延時、帶寬、誤碼率進行測試，以驗證本電力線載波通信性能虛擬測試儀設計的正確性。最後對比電力線載波通信網路性能虛擬測試儀和plca - 22測試出的結果，分析電力線載波通信網路性能虛擬測試儀的優點和不足，提出了改進的方法。
  19. The performance test is to find out the factor of effecting the networks performance. performance analyse is the base and precondition of how to optimize the network performance. in the power line carrier network, it ’ s very far - ranging to test network performance by power line communication analysis apparatus plca - 22, protocol analysis apparatus lonmanager and lonscanner. but they are very expensive and can ’ t be popularized. so because of it, i design a performance test virtual system of power line carrier communication network

    性能測試的目的在於找出影響網路性能的因素，從而得到提高網路性能的方法，因此性能測試是網路性能優化的基礎和前提。在電力線載波網路中，最為廣泛的方法是使用電力線通信分析儀plca - 22 ， lonmanager協議分析儀和lonscanner協議分析儀對網路的性能進行測試。但是它們都非常的昂貴，不能普及，本文針對此，設計了電力線載波通信網路的網路性能虛擬測試儀。
  20. We use the spread spectrum carrier method to improve the ability of anti - disturbing and reliability of the transmission of the data, the theory of the spread spectrum communication and its realization in the power line carrier is discussed in detail

    提出一種使用擴頻載波的方法，以求達到較高的抗干擾能力和數據傳輸可靠性，文中詳細論述了擴頻通信的原理及其在電力線載波中的實現。
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