direct digital synthesizer中文是什么意思

發(fā)音:

中文翻譯
造句

直接數(shù)字式頻率合成器

direct adj. 1.筆直的，一直線的；正面的。 2.直接的。 ...
digital adj. 1.手指的；指狀的。 2.數(shù)字的，數(shù)據(jù)的。 n ...
synthesizer n. 合成者，合成物；〔尤指〕【電學(xué)】合成器，綜合器。
dds direct digital synthesizer 直接數(shù)字合成器
direct digital frequency synthesizer 直接式數(shù)字頻率合成器
direct synthesizer 直接頻率合成器
dfs digital frequency synthesizer 數(shù)位頻率合成器; 數(shù)字頻率合成器
digital fm music synthesizer 數(shù)字調(diào)頻音樂(lè)合成器
digital frequency synthesizer 數(shù)字頻率合成器; 數(shù)字頻率綜合器; 數(shù)字式頻率合成器
indirect digital frequency synthesizer 間接式數(shù)字頻率合成器
direct frequency synthesizer 直接式頻率合成器
ddc direct digital control 直接數(shù)位控制; 直接數(shù)字控制2; 直接數(shù)字控制（系統(tǒng)）
dde direct digital encoder 直接數(shù)字編碼器
ddi direct digital interface 直接數(shù)字接口
ddr direct digital radiography 直接數(shù)字放射攝影術(shù)
dds direct digital satellite 直播數(shù)字衛(wèi)星
dds direct digital synthesis 直接數(shù)字合成
digital direct dialing 數(shù)字式直接撥號(hào); 數(shù)字直接撥號(hào)
digital type direct monitor 數(shù)字型直接監(jiān)視器
direct digital color proofing 直接數(shù)字彩色打樣
direct digital computer 直接數(shù)字計(jì)算機(jī)
direct digital control 直接數(shù)控; 直接數(shù)字控制
direct digital control computer 直接數(shù)字控制計(jì)算機(jī)
direct digital control ddc 直接數(shù)字控制
direct digital control station 直接數(shù)字控制站; 直流差動(dòng)變壓器

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例句與用法

Design of bessel low pass filter in direct digital synthesizer
直接數(shù)字合成器中貝塞爾低通濾波器設(shè)計(jì)
Through the research of direct digital synthesizer ( dds ) used as a divider in phase lock loop ( pll ) , a frequency synthesizer with small frequency resolution ratio and high purity frequency spectrum can be realized
摘要通過(guò)對(duì)直接數(shù)字合成器在鎖相環(huán)路中作為分頻器應(yīng)用的研究，使頻率合成器可以在實(shí)現(xiàn)超細(xì)頻率分辨率的同時(shí)達(dá)到高的頻譜純度。
This paper studies the system and hardware design of the arbitrary waveform generator based direct digital synthesizer in detail . and a theoretical analysis of the system performance is also given
本文主要研究了基于直接數(shù)字合成( directdigitalsynthesizer )技術(shù)的任意波形發(fā)生器( arbitrarywaveformgenerator )的整體方案和核心部分的硬件設(shè)計(jì)。
The developed module are the arbitrary waveform generator based on dos ( direct digital synthesizer ) technology as a signal source of testing system and the common testing device such as virtual spectrum analyzer - , virtual digital storage oscilloscopes virtual frequency counter etc
所開(kāi)發(fā)的模塊有，采用dds技術(shù)實(shí)現(xiàn)的任意波形發(fā)生器作為測(cè)試系統(tǒng)中的信號(hào)源，以及常見(jiàn)的信號(hào)測(cè)量設(shè)備，如虛擬頻譜分析儀，虛擬數(shù)字存儲(chǔ)示波器，虛擬頻率計(jì)數(shù)器等虛擬儀器。
This paper deals with fundamental principles and characters of direct digital synthesizer ( dds ) , analyzes the principle of dds in modulation , also presents various basic schemes to implement gmsic 4dqpsk and qam , and makes an initial analysis on their performances
本文介紹了直接數(shù)字頻率合成( directdigitalsynthesizer ， dds )的基本原理及特性，分析了dds用于調(diào)制的原理，并給出了實(shí)現(xiàn)gmsk 、 / 4dqpsk和qam等調(diào)制的多種方案，同時(shí)對(duì)其性能進(jìn)行初步分析。
The modulating signal is generated in the way of direct digital synthesizer technology . the signal has many characteristics such as ultra wide frequency bandwidth , ultra high frequency resolution and ultra good phasic continuity , etc . thus it can be achieved the high frequency and amplitude stability of the modulating signal
本文采用了數(shù)字頻率合成技術(shù)( dds )來(lái)產(chǎn)生調(diào)制信號(hào),它具有超寬的頻率帶寬、超高的頻率分辨率和相位連續(xù)性等特點(diǎn),可以實(shí)現(xiàn)聲光調(diào)制信號(hào)的頻率和振幅的高穩(wěn)定性。
The paper lays a strong emphasis on discussing the realization of the autocontrol of raster scanning of the scanner in x - y dimension , the " tapping " of the cantilever of the tappingmode afm by a direct digital synthesizer . then a method of parallel communication between dsp and pc in epp mode is given . finally , the author discussed the digital pid closed loop control of the scanner in z - direction , the automatic approaching of the tip using step - motor , and also some electro - magnetic interferences
論文首先簡(jiǎn)單介紹了掃描探針顯微鏡的發(fā)展、分類、工作原理及應(yīng)用；接著對(duì)ti公司的tms320vc5402dsp的特點(diǎn)及外圍擴(kuò)展作了簡(jiǎn)單介紹；然后分章節(jié)重點(diǎn)講述了利用vc5402dsp實(shí)現(xiàn)掃描探針顯微鏡的核心部件? ?壓電陶瓷管的x向和y向的光柵掃描控制；借助直接數(shù)字集成器( dds )實(shí)現(xiàn)輕敲式原子力顯微鏡的微懸臂的“輕敲” ； vc5402dsp的主機(jī)接口( hpi )與pc機(jī)在增強(qiáng)并行口( epp )模式下的通信；論文最后還介紹了掃描管z向的數(shù)字pid閉環(huán)控制，步進(jìn)電機(jī)的自動(dòng)進(jìn)針，并對(duì)實(shí)際出現(xiàn)的一些電磁干擾問(wèn)題作了討論。

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