接收數字分析 的英文怎麼說

中文拼音 [jiēshōushǔzìfēnxī]
接收數字分析 英文
analysis received digit
  • 接 : Ⅰ動詞1 （靠近;接觸） come into contact with; come close to 2 （連接; 使連接） connect; join; put ...
  • 收 : Ⅰ動詞1 （把攤開的或分散的事物聚集、合攏） put away; take in 2 （收取） collect 3 （收割） harvest...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 字 : Ⅰ名詞1 （文字） character; word 2 （字音） pronunciation 3 （字體） form of a written or printed ...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 析 : Ⅰ動詞1. （分開; 散開） divide; separate 2. （分析） analyse; dissect; resolve Ⅱ名詞（姓氏） a surname
  • 接收 : 1 （收受） receive; reception; accept; [電學] receipt; receiving 2 （接管） take over; expropriat...
  • 數字 : 1. （表示數目的文字; 表示數目的符號） figure; digit; numeral; character; numeric character 2. （數量） quantity; amount
  1. And we carry on carefully the theoretical research and systematic analysis of channelized receiver with poly - phase filters. in addition, we carry on simulations for channelization processing module

    針對基於多相濾波的數字通道化接收機，進行了仔細的理論研究和系統分析，並在此基礎上，對通道化處理部分進行了模擬實現。
  2. The second, the main work in the paper is discussed. they are include : the theory and character of electromagnetic leaking from a computer ; the theory of accumulation mean filter and pectination filter ; the analysis of synchronous signal precision, at 10 - 12 second level, for stably intercepting ; the technology requirement of receiver and data acquisition board for clearly displaying the images recovered from the intercepted data

    本文從計算機視頻電磁泄漏和數字濾波器兩方面的基本理論出發，詳細論述了計算機視頻信息電磁泄漏的原理及特點，指出視頻泄漏信息的頻譜是以行頻為周期的譜線；分析了重加濾波器和梳狀濾波器的性能；分析了視頻泄漏信息截獲的條件；推導出穩定截獲視頻泄漏信息需要對同步信號的精度控制在皮秒級；論述了清晰再現對接收機和數據採集卡的技術要求。
  3. The hardware mainly consists of three parts : signal pre - amplifying and conditioning circuit is used to amplifying the microseismic signals which have detected, signal processing and target identifying circuit based on singlechip is used to convert the analog signals which have been amplified to digital signals and go through signal analysis, processing to identify the moving target, the sending and receiving setting is used to send the identifying result to the decision - making and he can take relevant action according to the result

    硬體主要由三部分組成：信號調理電路對檢測到的微弱地震動信號進行放大；基於單片機的信號分析與目標識別電路將放大后的模擬信號進行a d轉換，進一步將得出的數字信號分析、處理，實現目標識別；識別結果發射與接收裝置將識別結果發射給決策者，由其根據接收結果採取相應的措施。
  4. In chapter 6 a digital interception system is designed and its operating principle is introduced. plenty of experimental results are provided here. in chapter 7 a mathematic model of electron beams in crt of computer vdu is given and entropy preservation performance of tempest transceiving system is discussed, a soft - tempest measure is suggested accordingly

    其中第六章設計了數字偵收系統，介紹了其工作原理，並提供了豐富的實驗結果；第七章給出了計算機陰極射線管顯示器電子束的數學模型，據此討論了tempest通信系統的保熵性，接著分析了數字偵收系統的抗噪聲性能。
  5. 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。
  6. The signal format of gps is analyzed, the principle models and mathematical models are established, the ber performance is analyzed in a channel interfered with wide - bandwidth awgn, narrow - bandwidth awgn, transmitted signal, single - tone signal respectively. based on the results above interference methods are discussed and simulated. then the performance of code acquisition and code trace of a digital gps receiver are discussed. the modem of linkl 1 and link4a are modeled and their ber performances are analyzed and simulated in channel s interfered with awgn, single - tone signal and multi - tone signal respectively

    建立了jtids的收發終端的數學模型，分析它在噪聲干擾、相關干擾、互相關干擾下的誤碼性能，提出較佳的干擾方法和干擾碼型，並進行模擬模擬；分析了gps的信號格式，建立了gps的原理框圖模型、信號數學模型，並對其在寬帶噪聲干擾、窄帶噪聲干擾、轉發干擾、單頻干擾等情形下的誤碼性能進行了分析比較，提出相對較佳的干擾方法，並做了計算機模擬，針對一數字式gps接收機中擴頻碼捕獲與跟蹤環的特性進行分析；建立了link11和link4a數據鏈調制解調數學模型，對它們在噪聲干擾、單音干擾、多音干擾等下的誤碼性能進行分析，最後對干擾情況進行了模擬模擬。
  7. This paper discusses some important technologies closed to dtv receiving system deeply, base on scn and cctv. it includes mpeg - 2 system level, dvb service information, conditional acceptance. it also describes how to realize epg, ca, upgrade on line etc based on the dtv service information technology at lengtho now, the production of this design is applied to the digital tv products of cctv and sichuan tv net

    本論文結合數字電視在四川廣電網和cctv的具體應用情況，深入研究探討了與數字電視接收系統緊密相關的部分關鍵技術，包括mpeg - 2系統層結構分析、 mpeg - 2和dvb業務信息分析、數字電視條件接收基本原理和加解擾及加解密技術，並詳細敘述了如何運用數字電視業務信息技術實現了電子節目指南、條件接收、在線升級等基本業務。
  8. This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller

    本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。
  9. The one - dimension effective fpk equation of colored noise serves as our starting point to evaluate the effect of noise color on communication system design. the theory of ber versus input snr per bit is developed and a new procedure to determine the system parameters that influence the minimum ber is proposed. it is shown that the communication system ' s performance is related to the turnable system parameters as well as the noise correlation time

    在指數相關高期色噪聲情況下，本文以一維有效色噪聲fpk方程作為研究的出發點，理論分析了限帶高斯色噪聲通道中脈沖幅值調制數字信號傳輸的誤碼性能，給出了非線性接收器的接收性能曲線，充分體現了噪聲相關時間的影響。
  10. In this paper, microwave t / r front - end for short distance wireless communication is realized in miniature based on low cost mcm - l technology. the main jobs are as follows : 1. the performances of i / q modulation and direct converter receiver are analyzed to set down the system scheme

    主要工作包括以下幾個方面: 1 .基於目前流行的數字中頻接收技術，分析了i / q調制和直接變頻接收機的性能，提出超外差變頻的總體系統方案。
  11. The pn analyzer of the paper includes radio frequency receiver and digital baseband processor and gps receiver

    論文設計的pn分析儀包括射頻接收部分、數字基帶部分、 gps接收機部分等。
  12. In the second chapter, the theory of vsb is described. following that, the theory and algorithms of the main functional receiving components for our transmission draft are described in detail and analyzed deeply. these algorithms are applied in the chip successfully

    第二章，首先講述vsb的調制原理，然後針對我們提出的數字電視傳輸方案下的有線通道接收晶元的各個主要功能模塊的實現原理和採用的演算法進行了較詳細的敘述和較深入的分析，這些演算法在本晶元中得到了成功的應用。
  13. And pays emphasis on analyzing the system structure and system flow, the core techniques, the channel characteristic and parameters of dvb - t system. the system adopts some core techniques such as cofdm, a lot of tps ( transmission parameter signalling ) insert and guard interval, and so on. so it can withstand high - level ( up to odb ), long delay static and dynamic multipath distortion

    論文首先描述了數字電視地面廣播的需求條件，技術難點和目前存在的問題，並重點分析了dvb - t系統結構流程，核心技術及系統通道特性和參數，該系統採用了cofdm （編碼正交頻分多路復用） ，大量導頻信號插入和保護間隔技術等核心技術，使之能抵抗高電平（ 0db ） ，長延時的靜態和動態多徑失真，有利於數字和模擬電視的混合傳輸，它的多載波調制模式功能和性能在移動和便攜接收、同頻網等方面具有獨特的優勢。
  14. This paper discusses the smart card decryption scheme which is used for conditional access ( ca ) system. the main contents of this paper are as follows : chapter 1 gives an overview of the worldwide studies of the smart card technology and ca technology, and put forward the direction of this dissertation

    第二章，結合課題需要，系統地研究了智能卡的基本原理及其相關國際標準，分析了有條件接收（ conditionalaccess ， ca ）技術的基本原理和數字視頻廣播（ digitalvideobroadcasing ， dvb ）中的ca關鍵技術，對系統涉及的des及rsa密碼演算法進行了概述。
  15. In this dissertation, the pivotal points relating to conditional access system, including the framework of mpeg - 2 system layers, the de - multiplexing of mpeg - 2 system, the service information table of mpeg - 2 and dvb, the encryption and decryption method for digital tv conditional access system, are fully discussed according to the market requisition. there is also a probe into the feasibility and security aspect of the coherent descramble algorithm

    本論文結合市場需要，詳細研究探討了與數字電視有條件接收系統緊密相關的部分關鍵技術，包括mpeg - 2系統層結構分析、 mpeg - 2系統復接技術、 mpeg - 2與dvb中業務信息表分析、數字電視有條件接收加解擾技術
  16. First, the implementation project of the if digital receiver of tdrss user transponder by the fpga and dsp cooperation design method is proposed in this thesis. then, the software simulation system for the if digital receiver is built up, definite word - length effect is analyzed, and some useful conclusions are derived, which provides reference for the following hardware design and debug

    本文首先採用fpga與dsp協同設計的方法實現該接收機的方案，然後建立了該中頻數字接收機的軟體模擬系統，對有限字長效應進行分析，得到了一些重要結論，為下一步的硬體設計和調試提供了參考。
  17. Before the connectting between moden and other equipments, it works at the cammand mode, the cammand that is send to moden is used to set or manipulate the mode, after the connectting between moden and other equipments, it works at connectting mode, at that time, the cammand send from the computer is send to another computer which will pass the moden and telephone line. the moden control cammand is called " at " cammand, all the control manipulation is realized by sending the ascii character to moden, after the moden received the " at " cammand, it firstly judges the cammand, secondly, it analyses and executes the cammand, finnally, it executes a response by sending back a ascii character, during the deseign of below - computer, we introduce in detail the deseign of system hardware and system software, below - computer system hardware and system software, below - computer is made up of microchip collecting and controlling system, which finish the strobe and water level data collection, display and disposal, deal with the communication with the above - computer, the microchip is the centre of data dealing with, the peripheral equipments are made up of data collecttion module, control cammand input module, display module, execute output module, and long - distance communication module

    在moden控制軟體的設計中，詳細敘述了moden正常工作時的幾個重要函數：初始化函數、撥號處理函數、應答處理函數、掛機處理函數，設計並調試了四個函數的通信程序，數據機工作時存在兩種模式，命令模式與連線模式，命令模式是針對功能設置的模式，連線模式是數據傳輸的模式。當數據機未與其他設備連接時，其處于命令模式，這時候下達給數據機的指令是作為數據機本身設置或操作用的；當數據機已經與其他設備連接時，其處于連線模式，所有在此時由計算機送至數據機的信息都將經由電話線傳送到另一部計算機上。專門使用於控制數據機的指令集被稱為「 at指令集」 ，對moden的所有操作（如撥號、應答、掛機等）都可以通過給moden發送ascii字元串來實現， moden在收到at命令后，先對命令進行判斷，接著分析和執行命令緩沖區中的命令，最後以自身的ascii字元對命令作出響應。
  18. The reflected wave will be received by the receive antenna and transferred to digital data. we can analyze the data that saved by the computer of gpr to deduce the medium ' s property, situation, location and so on. being a kind of nondestructive, untouched method, it has many advantages such as nondestructive, rapidness, simpleness and high precision, so it will have wide applications in the ways of examination, control and maintenance to road quality, especially for highway

    路用探地雷達是近幾年發展起來的、應用於公路無損檢測的一項新技術，它利用超寬帶脈沖電磁波對路面結構層進行探測，當雷達發射天線發射的電磁波在路面結構層中傳播時會在介電特性突變處產生反射和透射，反射回來的波經由接收天線接收並轉化為數字信號儲存起來，通過分析探地雷達回波信號來估計路面結構層的性質、狀態和位置等特徵。
  19. 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。
  20. In order to receive the data correctly and store it in computer for analysis and process, a kind of space tracking data recording system based on pci bus is designed and realized in this dissertation, which enhance the space tracking system ’ s integrality

    本課題正是在這種應用背景下，通過設計基於pci總線的數據錄取系統，對航天測控系統地面站綜合基帶設備數字接收機所接收的中頻采樣信號和解調后的數據進行接收和存儲，將其送到監控計算機中進行調制方案驗證和數據分析，從而進一步完善了航天測控系統的設計。
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