bandwidth range 中文意思是什麼

bandwidth range 解釋
帶寬范圍
  • bandwidth : （帶寬）：電纜，鏈路或系統傳輸數據的能力。
  • range : vt 1 排列；整理（頭發等）。2 使歸類[班、行、隊]；把…分類。3 〈用被動形或反身形〉加入，站住…的一邊...
  1. Intermodulation suppression for fh ( frequency hopping ) receiver is designed by selecting the intermediate frequencies and changing group of filters, local oscillation ( lo ) frequency, bandwidth of lo frequency under the condition that receiver configuration, sensitivity, dynamic range, instantaneous bandwidth and precision of frequency measurement are fixed

    摘要針對跳頻接收機的體制和靈敏度、動態范圍、瞬時工作帶寬、測頻精度等設計參數，通過改變預選器組成、本振頻率和本振帶寬，分析接收通道的中頻選取原則，以實現跳頻接收機的互調抑制設計。
  2. We use the term bandwidth to represent such a frequency range.

    我們用頻帶寬度這個詞來代表這樣的頻率范圍。
  3. The special relationship among signal bandwidth, center frequency and imaging squint angle in the range - doppler imaging algorithm and other methods is also presented in the chapter 3

    本章通過分析提出了距離多普勒等成像方法中信號帶寬、工作頻率和成像斜角之間存在的特定關系。
  4. Isar transmits wide bandwidth signals to obtain high range resolution. the cross - range resolution is obtained by the doppler frequency information of the target ’ s rotation

    逆合成孔徑雷達通過發射大帶寬信號獲得好的距離解析度，利用目標相對于雷達的轉動產生多普勒頻率梯度來獲取好的方位向分辨力。
  5. The system has 6. 8mhz digitalizing bandwidth and 70db instantaneous dynamic range, which can be obtained by using rf / if converter vxi3570, high precision digitalizer e1437a and proper signal processing arithmetic

    系統數字化帶寬設計為6 . 8mhz ，選用rf if變換模塊vx13570 、高精度數字化儀e1437a和適當的信號處理演算法可獲得70db以上的瞬時動態范圍。
  6. Based on research and experiments, we effectively improved the s - band tt & c transponder for satellite in such dimensions : with sensitivity up to - 92dbm ; dynamic range wider than 55db ; capture bandwidth of the receiver wider than 500khz ; capture time reduced to 22ms

    通過論文工作，成功地改進了川于衛星的s波段測控通信一體機，跟蹤和捕獲接收靈敏度都能達到一92dbm ，動態范圍55db以上，接收機的捕捉帶寬大於500khz ，捕捉時問減小到22ms 。
  7. Pulse compression technique is widely used in modern radar systems. it solves the contradiction between the range and velocity resolution. large time - bandwidth product signals such as linear frequency modulation signals ( lfm ) are used in pulse compression technique to improve the resolution in range domain

    現代雷達系統廣泛採用脈沖壓縮技術，在確保雷達作用距離和速度分辨力的前提下，採用大時帶積脈沖壓縮信號:如線性調頻（ lfm ）信號提高距離分辨力。
  8. Chirp signal is a kind of pulse - compressed signal with large time - bandwidth products achieved through linear frequency modulation. it has high resolution in range because of its great bandwidth

    線性調頻信號是通過線性頻率調制獲得大的時寬帶寬積的一種脈沖壓縮信號，具有大的帶寬，因此有高的距離分辨力。
  9. Pulse internal phase coding and pulse external quasi random frequency agile signal is a kind of complex signal which can avoid interference frequency band, increase system bandwidth, consequently increase the range resolution

    本文所研究的脈內二相編碼脈間準隨機跳頻信號是復合信號的一種，可以避開干擾頻段，提高系統帶寬，從而提高了距離分辨力。
  10. Become a kind of new electronics circuit - current - mode circuit. it is replacing the traditional design method of the voltage - mode in the high frequency high - speed signal processing realm 。 this thesis mainly discussed the modified second - generation current conveyors based on the current - mode kinds of new cuicuit components, they are stronger modified standard current - mode parts in fuctions on this foundation. mainly including the modified differential difference current conveyor ( mddccii ) 、 the fully balanced second generation current conveyor ( fbccii ) 、 ( full balances ) four - terminal floating nullor ( fbftfn ) and the current differencing buffered amplifier ( cdba ), they are all function very strong standard current - mode parts, they all can provide some circuit functions of better than general operation amplifier, because they have the voltage importation and the current importation, therefore use it since can carry out the voltage - mode signal processing circuit expediently, can also carry out the current - mode signal processing circuit expediently, and have to increase the benefit bandwidth to accumulate more widely than the voltage - mode, but have their advantages more according to the current - mode filter of the modified current conveyor, because it constitutes in brief, the filter wave function is stronger and they are better than in general use operation amplifier of many advantages, be easy to composing for example 、 high speed 、 frequency bandwidth 、 the power supply voltage requests low 、 consume small, the impedance is different from etc. advantages, otherwise they have biggish dynamic range, and flexible circuit synthesize, so they are the best active parts

    從第二代電流傳輸器ccii入手，重點研究了以下幾種改進型的第二代電流傳輸器:改進的差動差分電流傳輸器mddccii 、全平衡第二代電流傳輸器fbccii 、多輸出四端浮地零器ftfn 、全平衡四端浮地零器fbftfn 、電流差分緩沖放大器cdba的電路結構及其模型。然後在此基礎上系統地研究了基於這幾種改進型的第二代電流傳輸器的濾波器的設計方法，主要方法和結果如下:利用mddccii設計了差分式連續時間電流模式低通、帶通濾波器;電流模式跳耦結構考爾低通濾波器;利用fbccii設計了帶通二階節濾波器及電流模式雙二階通用濾波器;設計了基於多輸出端ftfn的電流模式二階通用濾波器電路;通過數字化開關選擇的基於fbftfn的電流模式通用濾波器;設計了基於最少個數電流緩沖放大器（兩個cdba ）的多功能通用電流模式濾波器及其在非理想因素情況下分析。設計濾波器的主要方法是採用級聯設計、運算模擬（信號流圖法）和反饋設計（跳耦法） 。
  11. The radar based on this system can go beyond the limit of continuous silent frequency band. if there are some extent non - continuous silent frequency band in certain range, and its sum can fulfill the demand of the signal bandwidth, the radar will be work well

    這種體制的雷達可以突破連續寂靜頻帶的限制，只要在一定范圍內存在一定數量的非連續寂靜窄頻帶，其總和滿足信號帶寬要求，就可以使雷達正常工作。
  12. But even with this advantage, wireless devices offer a vast range of capabilities in terms of memory, processing power, battery life, display size, and network bandwidth

    但即使有這個優點，各種無線設備在內存、處理能力、電池壽命、顯示屏大小和網路帶寬等方面的能力差異還是相當大的。
  13. Many existing co dsl modems may only support a relatively narrow receive frequency range, which will increase the difficulty of estimating the much wider bandwidth far - end loop noise

    許多已有的co （中心局） dsl數據機可以只支持相對較窄的接收頻率范圍，這會增加估計寬的多的遠端環路噪聲的難度。
  14. High g micromachined piezoresistive accelerometers usually need wider bandwidth than the low range piezoresistive accelerometers, for example, the highest load acceleration of these sensors can arrive at the 100, 000g, the sensitivity is 0. 2 0. 4 v / gv, and the installation frequency can reach the magnitude of mhz

    高量程加速度傳感器往往需要很寬的頻帶，例如高量程加速度傳感器量程可以達到100 ， 000g ，靈敏度0 . 2 0 . 4 v / gv ，安裝固有頻率可以達到mhz量級。
  15. The simulated results show that we can improve the sensitivity by setting the optical bias at / 2, reducing the gap of electrode, increasing the overlap integral factor, reducing the insert lose, adopting suitable segmentation number, increasing the electrode length, increasing the optical power, reducing the wavelength and the relative intensity noise and reducing the receive bandwidth ; obtain the wider bandwidth utilizing reducing the electrode length and the capacitance of modulator, segmentation the electrode ; increase the dynamic range using lowering noise, increasing the optical power at the detector and lower optical bias

    通過計算得知，使傳感器相位偏置為/ 2 ，減小電極間距，提高電光重疊因子，減小器件插入損耗，採用合適的分段數，增加電極長度，增大光功率，降低激光的波長，減小相對強度噪聲，減小接收帶寬，對提高靈敏度的效果是非常明顯的。而減小天線長度，降低調制器電容，電極分段，都可以獲取較大的帶寬。降低系統噪聲;增加到達探測器的光功率，採用較低的光學偏置，都可以增大線性動態范圍。
  16. According to the definitions of bottleneck bandwidth, available bandwidth and bulk transfer capacity, we analyzed the algorithms which named vps ( variable packet size ), pptd ( packet pair / train dispersion ), slops ( self - loading periodic streams ) and topp ( trains of packet pairs ) ; based on the principle of sub - path bottleneck measurement, we developed the bottleneck measurement algorithm using heterogenous packet - pair train ; after designing the three child algorithms ( demarcating bandwidth range, approaching bandwidth value and predicting the trendency of available bandwidth fluctuation ), we performed the algorithm called self - loading binary search ; applying the multi - home properties of sctp ( stream controltransmission protocol ) and measurement algorithm of available bandwidth, we presented a scheme to adjust the sctp transport path when there are network congestions or faults ; by the library of winsock and winpcap, we developed a measurement program to look for bottleneck bandwidth. in ns2 experiments, the algorithm based on heterogenous packet - pair train fitted well, and the algorithm of self - loading binary search worked quickly, and the sctp scheme improved the throughput effectively

    本文根據瓶頸帶寬、可用帶寬和btc （ bulktransfercapacity ）三類網路帶寬定義，分析了vps （ variablepacketsize ）和pptd （ packetpair / traindispersion ）瓶頸帶寬測試演算法， slops （ self - loadingperiodicstreams ）和topp （ trainsofpacketpairs ）可用帶寬測試演算法;基於子路徑瓶頸測試原理，設計了異構包對序列的瓶頸測試演算法;並結合三個子演算法（界定帶寬范圍演算法、接近帶寬值演算法和帶寬變化趨勢判定演算法） ，設計了自載流折半查找的可用帶寬測試演算法;把上面的演算法應用到sctp （ streamcontroltransmissionprotocal ）的多宿性和可用帶寬測試，提出了一個網路擁塞或故障時調整sctp傳輸路徑的方案;結合winsock和winpcap兩套網路開發工具，設計了一個瓶頸帶寬測試程序;通過ns2模擬實驗，驗證了基於異構包對序列瓶頸測試演算法的準確性、自載流折半查找演算法的快速性，和sctp改進方案的有效性。
  17. The paper firstly introduces the various calculation methods of injection - locking bandwidth, compares their merits and demerits and from the perspective of the model analysis illustrates the differences of the bandwidths calculated by these methods. on such a basis, the injection - locking range improvement technology is discussed and the features of various locking range improvement technologies are elaborated

    文章首先介紹了注入鎖定同步帶寬計算的不同方法，進行了優缺點的比較，並從分析模型的角度闡釋了這些方法計算出的同步帶寬的不同之處;然後對注入鎖定同步帶寬展寬技術展開了討論，闡述了不同展寬技術的特點。
  18. In addition, for a dispersive high frequency system, because of the requirement of the phase in - step between the beam and electromagnetic wave, the bandwidth are expected to be located in a narrow range

    另外，對干填充等離子體的色散高頻系統，由干電子注和電磁波互作用的同步要求，系統帶寬必然分佈在某一有限范圍內。
  19. And the lodb bandwidth was about 3. 11 ghz. through the magnetic texture treatment, its 1 odb bandwidth was increased to cover the measuring frequency range of 7. 30 - 11. 30ghz

    通過磁織構化處理，提高了其10db帶寬，使其吸收量在7 . 30 ? 11 . 30ghz內均高於10db 。
  20. The goal of this subject is to sum up and exploit our technique how to produce low phase noise wideband vcos, through investigating and studying the basic theory and recent research fruits, combining national condition, and produce our low phase noise wideband vcos. using high q components, such as : coaxial resonator, dielectric resonator, makes bandwidth of vco become narrower, so that recently common wideband vcos generally make inductor and capacitor ( lc ) as resonators, combining varactors with wide range tunable capacitance, and achieve the wideband

    本課題旨在通過對低相噪寬帶vco的基本原理、國內外在這方面的進展，結合國內的實際情況進行研究，總結和開發出自己的方法，形成自己的理論。並把它運用於實踐，以製造出低相噪的寬帶vco 。由於加入高q元件，如：同軸諧振器、介質諧振器等，會導致振蕩器帶寬比較窄，目前的寬帶vco一般採用電感電容（ lc ）作為諧振元件，輔之以大變容範圍的變容二極體，達到寬帶的目的。
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