hybrid modulation 中文意思是什麼

hybrid modulation 解釋
混合調制
  • hybrid : n 1 【生物學】雜種，雜交種；混血兒。2 （由兩種來源的東西組成的）混合物；受過兩種不同文化傳統教育...
  • modulation : n 調整，調節；（聲調的）抑揚，變化；【音樂】轉調，變調；【無線電】調制。 amplitude modulation 振...
  1. Research on topology and modulation for hybrid cascade multilevel converters

    混合級聯多電平變換器拓撲與調制策略研究
  2. The hybrid method can simulate accurately both the imaging and polarization - dependent diffraction characteristics of a concave grating. to meet the growing need for flattened passband in a practical wdmsystem, three design methods, namely, the tapered output waveguide structure with air - slots, the three - focal - point method and the analytical method of spatial phase modulation, are introduced to achieve a passband - flattened diffraction grating device

    針對實際光通信應用中對通帶帶寬的需求，本文提出了「結合空氣槽的漸變輸出波導結構方法」 、 「三焦點方法」及「顯式公式空間相位調製法」三種使平面集成型衍射光柵波分復用器件獲得平頂型頻譜響應的優化設計方法。
  3. Secondly, this dissertation analyses the method of waveform designing and processing for three hybrid pulse compression signals. the combined signals are improved on the characteristic than the single modulation mode

    其次，本文分析了三種組合脈沖壓縮信號的設計和處理方法，合成信號的性能較以前的單一信號有很大改善。
  4. Using dsp of ti inc. - - - - - - - tms320f240 this thesis develops a general ac variable - speed system, and then carries out the research on various new control strategies for induction motor based on it. this paper explains sine pulse width modulation ( spwm ), space - vector pulse width modulation ( svpwm ), and new pulse width modulation method - hybrid space vector pulse width modulation ( hsvpwm ) aiming at a inherent problem of dead time in the common pulse width modulation

    本文闡述了正弦脈寬調制（ spwm ）控制技術；電壓空間矢量（ svpwm ）控制技術；以及針對常用脈寬調制方法中存在的一個固有問題? ?逆變器開關器件死區時間的影響，提出了一種新的脈寬調制方法：混合空間矢量脈寬調制控制技術。
  5. In this thesis the author made a study of asynchronous motor model, designed a hybrid simulation system of dtc and analyzed the characteristics of the dtc system and the existing problems detailedly. due to the large torque ripple of induction motor in dtc system, especially in low speed, this thesis proposed a discrete time space vector modulation and designed a sliding - mode torque and flux controllers based on sliding - mode theory to overcome this drawback

    由於直接轉矩控制存在的不足之處主要在於轉矩脈動，特別是在低速運行時這種情況更加突出，針對該問題，本文提出了一種離散時間空間矢量合成法來改善轉矩脈動，並且引入滑模理論，設計了一種滑模轉矩和磁鏈控制器來克服這一缺點。
  6. By adopting qam ( quadrature amplitude modulation ) modulation, we have researched and implemented a high - speed data broadcasting system compatible with dvb ( digital video broadcasting ) standard in the past years, and integrated and applicated the system into sdh / hfc ( synchronous digital hierarchy / hybrid fiber coax ) network for the first time in china

    經過多年的研究，開發出了符合dvb標準、採用qam調制方式的陽光網高速數據廣播系統，同時在國內首次實現了基於sdh hfc網路的高速數據廣播系統集成應用。
  7. The processing of these hybrid signals is different from the single modulation signal, that is pulse compression twice. with respect to the hybrid signals including sf, the high range resolution is analysis, and the method for reducing sidelobe level is

    對于與頻率步進信號復合的組合脈壓信號，分析了它們的合成高距離分辨效果，並對其距離旁瓣的抑制方法進行了探討。
  8. Firstly, the current testing localization in the detection of electric bow is analyzed and the new system ' s whole construction developed in this thesis is introduced ; in the 2rd chapter, the embedded 110v dc power supply is analyzed and constructed, and with experiments, some dissonant results such as the fluctuation of output pwm ( pulse width modulation ) pulses, the power noise added to output voltage, and the drop of output voltage have been analyzed and the problems have been broken down one by one ; in chapter 3, stepping motor ' s drive has been systematically dissertated, and combing stepping motor ' s subdivided drive technology, the author develops an intelligent mini - step driving circuit using a main - sub microprocessor structure, which is validated in the hybrid stepper based system ; in the 4th chapter, liquid crystal driving and displaying technology is specified in detail, with one sort of lcd modules ( tlm12864h ), the author develops an feasible circuit for the new testing system, designs a menu mode based program struc ture and brings here some programming codes using franklin c51 programming language ; in chapter 5, the above built system is used in the electric bow ' s practical detection, and the differentiating rate of this system is analyzed

    論文首先分析了目前機車受電弓檢修方式存在的局限並概述了本論文研製的受電弓測試系統的體系架構；第二章對系統內置110v直流控制電源進行了分析和設計，結合試驗對輸出pwm振蕩、輸出電源噪聲大、輸出電壓下跌等現象進行了分析並提出解決措施；第三章論述了步進電機的驅動，結合步進電機微步驅動技術研製了基於上下位單片機組的混合式步進電機智能驅動電路，並在試驗中得以驗證；第四章詳述了液晶驅動及顯示技術，利用一款液晶顯示模塊tlm12864h研製出本系統用液晶顯示電路，設計了菜單式的程序結構並以franklinc51編程方式給出部分子程序代碼；第五章則將以上構建的整個系統應用在機車受電弓的實測中，並對測試解析度進行了分析。
  9. Some methods and algorithms were studied for fsk / psk radar signal sidelobe suppression in this paper. the hybrid signals are the combined signals with multi - modulation mode

    復合調制信號指的是採用兩種或者兩種以上調制方式對信號進行調制得到的組合信號。
  10. Hfc ( hybrid of fiber and coax ) network is a competitive means to support wide varieties of video, voice and data services. the thesis describes and analyzes the system framework, frequency assignment and signal modulation schemes of hfc. recently hfc and adsl are aggressive among broadband access technologies

    本文對hfc網的系統結構、網路拓撲、頻譜分配方案和業務信號的調制方式等進行了詳細的闡述和分析，並且全面地比較了hfc和adsl的優缺點，總結出hfc具有較高的性價比，是我國寬帶接入網的優選方案。
  11. Secondly, the ipos is introduced on the whole, including network architecture, protocol reference mode, and two key technologies : the hybrid arq error control and adaptive coding modulation. meanwhile, the qos standard specifically used in the dissertation is presented

    之後從總體上對ipos協議進行介紹，分析了其網路結構，協議模型，混合arq控制機制、自適應編碼調制這兩項ipos協議的主要技術組成等內容，並提出了本課題採用的qos指標。
  12. Hybrid concatenated convolutional coded modulation ( hctcm ) is studied. performance bound and design criteria of hctcm are given

    研究了混合級聯卷積編碼調制，得到了它的性能限和設計準則。
  13. Some new technologies are introduced in hsdpa, including a shorter transimission time interval ( tti ) 、 adaptive modulation and coding ( amc ) scheme and a fast physical layer hybrid arq mechanism

    在該系統中採用了以下技術:更短的傳輸時間間隔，物理層的混合自動重傳，自適應編碼調制等。
  14. Secondly, the paper perform a review of the most common modulation methods used in such systems, including ook, ppm, overlapping - ppm, a hybrid modulation scheme called appm

    其次，本文對常用的幾種調制解調方式進行了研究。包括ook 、 ppm 、交疊調制oppm 、混和調制方案appm ，得到了關于符號誤碼率和通道容量的表達式。
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