無線電調制器 的英文怎麼說
中文拼音 [wúxiàndiàndiàozhìqì]
無線電調制器
英文
radio modulator- 無 : 無Ⅰ動詞(沒有) not have; there is not; be without Ⅱ名詞1 (沒有) nothing; nil 2 (姓氏) a surn...
- 線 : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 調 : Ⅰ動詞1 (配合得均勻合適) harmonize; suit well; fit in perfectly 2 (使配合得均勻合適) mix; adju...
- 制 : Ⅰ動詞1 (製造) make; manufacture 2 (擬訂; 規定) draw up; establish 3 (用強力約束; 限定; 管束...
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 無線電 : radio; wireless無線電愛好者 radio amateur; amateur radio; 無線電報警 radio warning; 無線電報務員 ...
- 無線 : wireless無線電報 wireless telegram; radiotelegram; 無線話筒 radio microphone ; 無線裝訂 unsewn binding
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Methods of measurement for radio equipment used in satellite earth stations - part 2 : measurements for sub - systems - section seven - frequency modulators - section eight - frequency demodulators
衛星通信地球站無線電設備測量方法第2部分:分系統測量第7節:頻率調制器第8節:頻率解調器The automatic identification of the modulation types has been applied to many fields such as source identification, interference identification, radio interception, - electronic countermeasures, etc. the modulation recognizer based on the decision - theoretic approach and the constellation diagram is proposed and the signal ' s kurtosis is used as the indicator to differentiate the analogue modulation from the digital modulation
通信信號調制類型的自動識別廣泛應用於信號確認、干擾辨識、無線電偵聽、電子對抗和信號監測等領域。本文提出基於決策論與星座圖的綜合調制識別器,使用信號的峰度區分調制類型是模擬調制還是數字調制。First, how to conduct sample and quantification of continuous time signal which is prior condition of sdr is explored in detail, and the comparison and analysis of some sample modes are given in which band pass signal sampling theorem is most important. second, multi - sample rate signal processing which is an important basis of sdr is studied. emphasis are put on decimation and interpolation those are the most fundamental process and the realization of decimation and interpolation filter
在基於中頻采樣的軟體無線電結構框架下,首先詳細探討了軟體無線電的前提條件,即如何對連續時間信號進行采樣量化,比較分析了幾種采樣的方式,其中最為重要的是帶通信號采樣定理;然後探討了軟體無線電的一個重要基礎,即多采樣率信號處理,重點討論其最基本的兩個過程抽取和內插以及抽取器和內插器的實現;接著介紹了結構簡單、適用於一級抽取的cic濾波器和適用於做2倍抽取的半帶濾波器;再次論文在總結了傳統的調制解調基礎上,結合軟體無線電器件的特點,系統的探討並實現了基於正交思想的am 、 fm 、 ask 、 fsk 、 bpsk 、 qpsk的正交調制解調演算法。Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service, multi - modulationmode and multi - processdatarate. first, related software defined radio theory is introduced ; later, channels of transmitter - receiver are designed with consideration of data format, modulation, fec, interwaving. and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding
本文首先介紹了相關的軟體無線電理論;然後完成了包括數據格式,調制方式,糾錯碼方式,交織器和擾碼器等部分的中頻數據機通道設計;接著著重介紹了系統中使用的音頻壓縮演算法cvsd (連續可變斜率增量調制)的原理和實現,以及作為前向糾錯碼的卷積碼編碼理論和編解碼的高效實現。Ofta s work in this aspect includes licensing and regulation of services ; setting equipment and network connection standards ; type - approving telecommunications equipment ; administering the numbering plan ; handling issues concerning access to land and provision of physical facilities for the installation of networks, including the co - ordination of access to buildings by operators and laying of ducts for telecommunication cables in public roads ; and handling and investigating consumer complaints pertaining to suspected breach of provisions in the telecommunications ordinance and licence conditions
包括規管電訊服務及簽發牌照、制定電訊器材及網路接駁的標準、檢定無線電器材類型、管理電訊服務號碼計劃、處理有關進入土地和提供有形設施作網路裝設用途的事宜,包括協調營辦商進入樓宇及在公用道路為通訊電纜鋪設管道,以及處理和調查與涉嫌違反《電訊條例》和發牌條款有關的消費者投訴。This article will be discussed a kind shortwave section spread spectrum modulator based on software radio which will be used in maritime naval vessel communication
本文將討論一種用於海上艦船通信的基於軟體無線電的短波段擴頻調制器。Aim at the development of the software radio in generalization, standardization and modularization, a waveform synthesis solution based on direct digital frequency synthesis is developed
針對國內外軟體無線電技術對通用、標準、模塊化的硬體平臺的需求,本文提出了一種基於直接數字頻率合成原理進行信號數字域調制的波形合成器設計方案。The basic characteristics, framework, principles of dominant parts and application of those are studied and illustrated. at the last chapter, by devising a short - wave radio station aforementioned fundamental theories are put into practice especially digital modulation, demodulation, ddc and dug etc. the implement framework and design method of sdr are discussed by data transmission of voice including dug modulation in transmit module and ddc demodulation in receive module. moreover, satisfied results are obtained by validation on the sb3410 platform in bluewave system
針對論文設計中用到的兩個比較重要的器件hsp50214b下變頻器和hsp50215上變頻器,作了較為深入的研究並給出了詳細的描述,包括基本特徵、框架結構、各主要部分原理及在設計中的應用;在最後一章,通過設計一個短波無線電臺,將前面的基礎理論尤其是數字調制、解調及數字上、下變頻等應用於實踐中,通過實例討論話音數據傳輸的軟體無線電實現結構及設計方法,包括發射模塊中的上變頻調制和接收模塊中下變頻解調等,並在bluewave系統的sb3410平臺上運行驗證,取得了較為滿意的結果。With the recent developments in multi - media services, computer networks and wireless access, the need for external modulation in optical fiber transmission systems has been firmly established
隨著多媒體技術、計算機網路和無線業務的發展,使得高速電光調制器的需求大大增加。On the basis of the third kind structure ( the modulator in simulative field ), the paper gave out a method to realize the software radio digital hardware modulator which can perform the function of ask, psk, dpsk, mask, qpsk, dqpsk, qam, oqpsk modulations, using the apparatus of dsp and cpld. the test showed that the modulator can meet the request of system design
並以第三種結構的數學模型(模擬域的正交調制模型)為基礎,以dsp和cpld器件為核心,進行了硬體電路設計,實現了基於軟擴頻系統的軟體無線電數字硬體調制平臺,實現了多種數字調制方式,其中包括ask , psk , dpsk , mask , qpsk , dqpsk , qam , oqpsk調制方式。It is not only the satisfactory substrate used for the epitaxy growth of infrared detector material hgcdte, but also attractive candidates for the manufacture of high quality x - ray or y - ray detectors, photoelectronic modulator, solar cell, and laser windows etc. no matter what the crystal is used as detectors or epitaxy substrate, it is of vital importanteto obtain high quality cdznte crystals with perfect surface
它不僅是生長紅外探測器材料hgcdte最理想的外延襯底,而且還被廣泛用於制備高性能x射線或射線探測器、光電調制器、太陽能電池和激光窗口等。獲得高性能、高質量的czt晶體是至關重要的。無論是作探測器還是作外延襯底等都要求它的表面質量要非常高,因為表面質量會直接影響到器件的性能。As a high band - efficiency digital modulation scheme, dvbc ( digital video broadcasting of cable ) qam ( quadrature amplitude modulation ) modulator is widely adopted in the wide - band communication area, such as hdtv broadcasting, cable modem, microwave communication, satellite communication and so on
正交幅度調制器( qammodulator )作為一種高頻譜利用率的數字調制方式,在高清晰度電視( hdtv )廣播、 cablemodem 、固定寬帶無線接入、衛星通信、數字微波傳輸等寬帶通信領域得到了廣泛應用。This paper discusses the hardware system architecture of broadband software radio experiment platform, designs hardware circuit system, studies the basic theory of software radio deeply, establishes the mathematical model. the platform is made up of a / d ( ad6640 12bit 65 msps ), orthogonality transform, digital filtering and dsp, etc. the platform can demodulate pcm - am / fm / pm / ask / fsk / psk / qpsk, pcm - cdma - psk, pcm - qpsk signal
本文論述了寬帶軟體無線電接收實驗平臺硬體系統的體系結構,設計了硬體電路系統,深入研究了軟體無線電的基本理論,建立了接收實驗平臺的數學模型。該平臺由高速a d變換器( ad664012位65msps ) 、正交變換、數字濾波器、 dsp等部分構成。實現了pcm - am fm pm ask fsk psk qpsk , pcm - cdma - psk qpsk調制方式的解調功能。In view of project practice, alterable digital modulation in telecontrol system has been achieved with the help of chip fpga by means of software radio. it is also compared with the hardware method
結合工程需要,採用軟體無線電的設計思想,在可重配置fpga器件的支持下實現遙控系統中可變數字調制並與基於dds的硬體實現方案進行了比較。Methods of measurement for equipment used in digital microwave radio transmission systems - measurements on terrestrial radio - relay systems - transmitter receiver including modulator demodulator
數字微波無線電發射系統使用設備測量方法.地面無線電中繼系統測量.發射機接收機包括調制器解調器Methods of measurement for equipment used in digital microwave radio transmission systems - part 2 - 4 : measurements on terrestrial radio - relay systems ; transmitter receiver including modulator demodulator
數字微波無線電傳輸系統使用設備的測量方法.第2 - 4部分:地面無線電中繼系統的測量.包括調制器解調器的發射機接收機Methods of measurement for equipment used in digital microwave radio transmission systems ; part 2 : measurements on terrestrial radio - relay systems ; section 4 : transmitter receiver including modulator demodulator
數字微波無線電發射系統使用設備的測量方法.第2部分:地面無線電中繼系統的測量.第4節:發射機接收包括調制器解調器Methods of measurement for equipment used in digital microwave radio transmission systems - part 2 : measurements on terrestrial radio - relay systems - section 4 : transmitter receiver including modulator demodulator ; amendment 1
數字微波無線電發射系統使用設備的測量方法.第2部分:地面無線電中繼系統的測量.第4節:發射機接收包括調制器解調器.修改件1Methods of measurement for radio equipment used in satellite earth sations. part 2 : measurements for sub - systems. section five : frequency modulators
衛星地面站用無線電設備的測量方法.第2部分:分系統的測量.第5節:頻率調制器Chapter 1 sketches bandwidth wireless data transmission system, puts forward full digital modulation and demodulation and construction of software wireless and fpga. to design the burst mode 64 qam demodulator in the special applications
第一章簡述了寬帶無線數據傳輸系統,提出了全數字調制與解調的方案,可以採用軟體無線電和fpga實現,在特殊應用環境里對64qam突發模式解調器進行fpga硬體設計。分享友人