調頻合成 的英文怎麼說

中文拼音 [diàobīngěchéng]
調頻合成 英文
fms frequency modulation synthesis
  • 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...
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
  • 成 : Ⅰ動詞1 （完成; 成功） accomplish; succeed 2 （成為; 變為） become; turn into 3 （成全） help comp...
  • 調頻 : frequency modulation （fm）; frequency adjustment調頻磁帶錄音機 f m magnetic tape recorder; 調頻...
  1. Effect of beat frequency on the measured phase of laser - diode heterodyne interferometry

    斜波調頻合成外差干涉相位檢測非線性分析
  2. Internally synthesized fm, am and phase modulation

    內部合成調頻，調幅與調相
  3. Presents the model proposed for analyzing the vibration characteristics of shrouded blades and their calculation method by employing a wave propagation theory and modal synthesis technology coupled with a finite element method from the view point it is possible not only to conduct frequency modulation of the shrouded blades of a gas turbine, but also to utilize the friction effects between them to dissipate energy, thereby attaining the aim of vibration alleviation, as shrouded blades have been widely used in the design of high - speed turbomachinery, such as modern gas turbines and steam turbines, and with the shrouded blades forming an integral whole in a centrifugal force field, the vibration characteristics of the whole ring of blades are different from those of a single isolated blade, and this makes it essential to take into account the integral effect of blade shrouds, concludes from the calculation examples and engineering application that the above approach is valid and correct along with the possibility of considerably reducing the scale of calculation and analysis, and points out it is necessary to take into consideration the coupled effect of the whole ring of blades while the dynamic characteristics of shrouded blades is being analysed

    帶冠葉片不但能調頻，還可以利用葉冠之間的摩擦效應來耗散能量，達到減振的目的.帶冠葉片在離心力場中形成一整體，其整圈葉片振動特性不同於單個孤立葉片，需考慮葉冠的整體效應.利用帶冠葉片系統的循環對稱性，提出了採用波傳播理論和模態綜合技術，結合有限元方法研究燃氣輪機帶冠葉片振動特性的分析模型和計算方法.算例和工程應用證明了該方法是效性的、正確的，並可以大大降低計算分析規模.研究表明帶冠葉片動力特性分析時必須考慮整圈葉片的耦合效應
  4. Fpga and dvb standard are introduced firstly, dvb - c standard and composition of its system are analyzed completely, development of modulator structure and dvb - c digital modulator composition are presented, more over, analysis of respective modular are given. then, principle of dvb - c digital modulator system are presented, they are error control technique 、 mqam 、 nyquist rule and root raised cosine filter 、 window design method for fir filter 、 multi - rate signal processing ( integer interpolating, conversion of fractional sampling, equal conversion of net structure, polyphase structure for filter, poly - phase structure for interpolator, multi - stage implementation of samplying conversion ) 、 distrubited algorithm 、 cic filter 、 dds 、 cordic algorithm

    接著，專門利用一個章節闡述了dvb - c前端調制系統原理，他們了差錯控制技術、多進制調制（ mqam ） 、 nyquist準則與平方根升餘弦濾波器、有限沖擊響應濾波器的窗函數設計法、多抽樣率信號處理包括（整數倍內插原理、分數倍抽樣率轉換、網路結構的等效結構、濾波器的多相表示、內插器的多相表示、抽樣率轉換的多級實現） 、分散式演算法、 cic濾波器、直接數字頻率合成（ dds ） 、 cordic演算法。
  5. The circulation function therapeutic instrument of brain based on direct digital synthesis ( dds ) technology uses the domestic newest scientific findings and others in foreign countries. adopting the dds technology directly, it produces the safe, valid treatment. through pasting heart electric electrode on body surface, it introduces electric current to cerebral fastigial nucleus ( fn ) without damage in order to improve the state of brain blood supply and nerve conducted and something of lacking proper care to lose the symptom of coordinating with a net, increase cerebral blood flow, reduce downright bad neuron figure, district of penumbra, lighten brain perinemotoma

    基於直接數字頻率合成技術的智能腦電治療儀應用國內國際上最新科研成果，採用直接數字頻率合成技術，實現安全、有效的治療，通過粘貼于體表的電極，無創引入小腦頂核，從而改善腦供血狀態和神經傳導失調失絡癥狀，增加大腦血流量，減少半影區壞死神經元數目，減輕腦水腫，最終達到改善腦循環功能的作用。
  6. By making full use of favourable narrow - band tracing filter character of pll and by combining the merits of dds such as super fine frequency resolution 、 high frequency accuracy 、 very fast frequency hoping with it, the pll / pll + dds frequency synthesizer presents wide band high quality source and super small frequency hoping step. while the electronically tuned filter abates the image interference and notably improves the selectivity. the theorem of frequency synthesizer and center - frequency - fixed filter is simply but adequately introduced first in this paper

    課題中所採用的pll或dds pll鎖相頻率合成方法充分發揮鎖相環良好的窄帶跟蹤濾波特性，並結合dds的高頻率解析度、高頻率精確度和高速頻率捷變等優點，分別實現了系統所要求的高質量寬帶本振源和小步長頻率捷變；採用電調諧選頻技術，則大大改善了接收機的選擇性和抗干擾能力。
  7. In the part of modulation and demodulation, we analyzed the principles of harmonic mixer, detectors, power dividers / combiners and branch - line couplers

    對調制/解調器射頻電路部分，包括亞諧波混頻器、檢波器、功率分配/合成器和分支線耦合器基本原理進行了分析。
  8. The programme logic controller is utilized to control the inverter ' s output frequency which accomplishes controlling the velocity of speed - controlling asynchronous moter. the velocity between main asynchronous moter and speed - controlling asynchronous moter is composed by way of the differential planetary gear train, the tranmission system is made to regulate velocity stepless in large scope which succeed in controlling starting progress of load

    使用可編程式控制制器對變頻器的輸出頻率進行控制，實現對調速電機轉速的控制。調速電機與主電機的轉速經差動行星輪系的速度合成，可使傳動系統在很大范圍內無級調速，實現對負載的可控起動。
  9. For digital audio encoding and decoding modules, delta - sigma modulation is introduced and audio data, preambles with accessorial data are multiplexed according to the digital audio interface standard ; for carrier wave, pll frequency synthesizer is used ; for frequency modulation, voltage control oscillator is taken ; for demodulation, pll frequency discrimination is adopted

    調制方式，並按照數字音頻介面標準對音頻數據、同步字和附加信息進行通道復用;對于載波信號，採取鎖相環頻率合成技術手段;對于頻率調制，採用壓控振蕩器;對于解調電路，採取鎖相環鑒頻電路。
  10. Then this paper deals with the design and realization of the smart - antenna receiver system architecture. and the receiver is divided into four modules, including rf front - end module |, if demodulation module, analog to digital conversion module and frequency synthesis module

    隨后在此基礎上，對應用於w - cdma系統智能天線接收機進行了系統設計分析，並給出了實現方案，主要包括射頻前端電路模塊、中頻解調電路模塊，參考頻率合成電路模塊和數模、模數轉換電路模塊四部分的設計與實現。
  11. The radar which is embedded on platform sidelooking, but the platform will be disturbed by airflow inevitably. so, the radar will have a small sloping angle, thereby, the doppler centroid that is not zero and doppler frequency rate need to be estimated from the raw echo data in order to focus in azimuth commendably

    場景成像的合成孔徑雷達一般是正側視放置，但是載機不可避免的要受到各種擾動影響，雷達會有一定的斜視角，從而導致了多普勒中心頻率不為零，多普勒調頻斜率也隨著雷達斜視角改變。
  12. But i think the central part of joy - fm is the cooperation between jade ( wang lu ) and myself and responses we get from our audience, our joy family

    但我想做好"歡樂調頻"的關鍵是我與王璐的合作，以及我們從聽眾- - "歡樂家庭"的成員- -那裡得到的回應。
  13. With the phase - noise model of the phase loked loop ( pll ) and the analysis of spur characteristic of fractional - n frequency synthesizer using - ? modulating technology, the scheme of pll with mixer + quadrupler is confirmed as a result

    文中，通過建立鎖相環路的相位噪聲模型，並分析了使用- ?調制技術的分數頻率綜合器的雜散性能，以此二者為理論依據完成了毫米波頻率源合成器的基本方案? ?鎖相混頻環+倍頻器方案。
  14. Research on the linearity requirement of lfm in sar

    合成孔徑雷達線性調頻信號的線性度約束研究
  15. Linear frequency modulated continuous wave ( lfmcw ) radar has many characteristics of simple structure, small volume, light weight, low cost, low transmitter peak power, short wavelength, thus it is especially suitable to be used in radar image, research of target characteristic, end control and guide, battlefield spy, scene watch etc. and more people in the world interested in it, it will have a wide prospect

    線性調頻雷達具有結構簡單、體積小、重量輕、造價低、發射峰值功率低、波長短等一系列優點，特別適合於雷達成像、目標特性研究、末制導、戰場偵察和場面監視等領域，目前已受到國內外的廣泛重視與研究，應用前景十分誘人。
  16. This method offers more precise geometry for spaceborne sar system design and simulation. 3. in the analyzing on the radar doppler properties, under the ellipsoid earth model and ellipse orbit model, considering the earth rotation, the radar doppler properties with different orbit eccentricity are compared, and the fact that orbit eccentricity affects doppler frequency rate is found

    在雷達多普勒特性分析中，論文採用橢球地球模型和橢圓軌道模型，結合地球的自轉，通過不同偏心率下雷達多普勒特性的比較，研究了軌道偏心率對合成孔徑雷達系統設計與模擬軟體研究雷達多普勒調頻斜率的影響。
  17. The injection - locking technology, characterized by the frequency stabilization, amplification, modulation and etc, has been widely used in the small - signal recovery, frequency synchronization, power synthesis, phase modulation and etc in the microwave, millimeter wave and higher frequency range communication and phased - array systems

    注入鎖定技術具有穩頻、放大、調制等特性，已被廣泛應用於微波毫米波以及更高頻段通信和相控陣系統中的小信號恢復、頻率同步、功率合成、相位調制等。
  18. The thesis used a fully digital method that employed the principle of direct digital frequency synthesis to realize the modulation based on dsp

    本文採用了完全數字化的方法，是利用直接數字頻率合成技術的原理，並基於dsp的系統實現msk調制。
  19. The simplicity of its architecture and its capability to produce a great variety of different timbres made fm synthesis more attractive than other techniques available at the time of its invention

    調頻結構體系簡單且能產生大量不同的音色，這使得在調頻音發明之初，調頻合成受到了很多人的歡迎。
  20. This paper focuses on the analysis of sigma delta modulation theories such as mathematics models, noise shaping characteristics, etc. combined with traditional pll fractional - n synthesizers structures, a project of sigma delta modulator is proposed, and the algorithmic analysis is implemented by fpga

    本文在闡述-調制理論，分析其數學模型，噪聲整形特性基礎上，結合傳統小數分頻合成器，提出了-調制小數分頻鎖相環頻率合成器實現方案，及其在fpga里的調制器演算法。
分享友人
分享到 Line

分享到臉書