等帶寬 的英文怎麼說

中文拼音 [děngdàikuān]
等帶寬 英文
equiband
  • 等 : Ⅰ量詞1 （等級） class; grade; rank 2 （種; 類） kind; sort; type Ⅱ形容詞（程度或數量上相同） equa...
  1. Digital speech technology has been widely used in many fields of communications in recent years, but it is just at beginning to use acoustical wave to implement underwater digital speech communications, which mainly results from the bandwidth - limited underwater acoustic communications channel and its high temporal and spatial variability

    目前，數字語音技術已廣泛應用於許多通信領域，但是在水下利用聲波進行數字語音通信卻是剛剛起步的新技術，這主要是由於水聲通道有限的通信帶寬及其時變、空變等特性所決定的。
  2. The signal we named it fundamental wave ; according to the fundamental wave, coefficients of the fundamental wave can be lined in a sequence. when the unique of the dissolve of the fundamental wave can be confirmed, the sequence of the coefficients can be regarded as one of representation forms of the signal itself ; theory of dissolvable signal shows that when order of the matrix of fundamental wave sampling equals to number of fundamental waves, the sequence of the sampling values from sampling points must be matched one by one with the sequence of the coefficients of fundamental waves. the sampling composed by sequences of the sampling values must be full sampling ; the relevant deductions of the theory of dissolvable signal shows that when sampling the signal, sampling frequency must be lager than the ratio of the number of fundamental waves to the occupation time of the fundamental waves ; to band - limited signals, when the fundamental wave is a sine signal, the results from the relevant deductions of theory of dissolvable signal is coherent to the classic sampling theory

    本文通過分析認為，當信號集中的任一信號可表示為一系列已知信號的線性代數和時，信號集便構成可分解信號集，已知信號稱為基波信號；對可分解信號而言，基波系數構成一序列，當對指定的基波信號集分解唯一確定時，系數序列本身便是信號的一個表示；可分解信號采樣定理指出當基波樣值矩陣的秩等於基波數時，則由采樣點處的采樣樣構成的樣值序列必與基波系數序列一一對應，從而由該樣值序列構成的采樣必為完全采樣；可分解信號采樣定理中的推論指出，對信號集進行采樣，采樣頻率必須大於其信號分解的基波數與其對應時長之比；對有限帶寬信號，若基波信號為正弦信號時，由可分解信號采樣定理推論給出的結論與經典采樣定理一致。
  3. In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab

    針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。
  4. For the reason of the restriction of the indefiniteness of network topology and the limitation of wireless medium bandwidth, the research in router protocols in manet is important and significant

    由於網路拓撲結構的不確定性、無線介質帶寬有限等因素的制約， manet中的路由協議是其研究的一個熱點和難點。
  5. 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。
  6. Neb noise equivalent bandwidth

    噪聲等效帶寬
  7. The factors limiting the frequency band of the wide - band amplifier are introduced. through analyzing the effects of the intrinsic parameters and parasitical on the frequency characteristics, a method of improving fr of mosfet by using short channel device and making mosfet work at the saturation region through raising vgs is put forward ; the effects of different kinds of circuit configurations on the frequency characteristics and the junction voltage on the voltage pattern circuit, current pattern circuit and frequency characteristics are analyzed. according to the linear theory of transconductance which is applied in the bit circuit, the current pattern amplifier circuit, current transfer circuit and output circuit which consist of mosfet and the wide - band amplifier composed of them are put forward

    介紹了限制寬帶放大器頻帶寬度的因素，通過分析mosfet的本徵參數、寄生參數對頻率特性的影響，提出了採用短溝器件、使mosfet工作在飽和區、抬高柵源電壓等提高mosfet特徵頻率的方法；分析了不同電路組態對放大器頻率特性的影響、節點電壓對電壓模電路、電流模電路頻率特性的不同影響，根據應用於雙極晶體管電路的跨導線性原理，提出了採用mosfet構成的電流模放大電路、電流傳輸電路、輸出電路以及由它們所組成的寬帶放大器，獲得了良好的頻率響應。
  8. This matrix is symmetric and banded, the band being equal to four.

    這個矩陣是對稱的且是帶狀的，帶寬等於四。
  9. The former includes vod, remote medicine, virtual shop, electronic shopping, etc. currently, it is possible to provide broadband multimedia service from the perspective of technology. however, there will be some time to go before it becomes popular, for subscriber access needs a relatively large bandwidth and the rent of circuits is relatively high

    寬帶多媒體業務如vod （視頻點播） 、遠程醫療、虛擬商店、電子購物等。從技術角度來看，提供寬帶多媒體業務，目前雖已具備現實可能，但尚難普及。究其原因是用戶接入要有比較大的帶寬，而電路租費比較高。
  10. The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering

    本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。
  11. 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。
  12. The theoretical part mainly refers to studies of optical parametric chirped pulse amplification. we analyze some basic theories of opcpa, such as phase matching, parametric bandwidth, walk - off in space and time, gain property and so on, and compare the basic properties of bbo, lbo and kdp

    理論部分主要是對新興的光參量啁啾脈沖放大技術的相位匹配、參量范圍、時空走離、增益及帶寬特性等基礎理論進行了分析，並對常用的bbo 、 lbo和kdp基礎特性進行了比較分析，這對于光參量啁啾脈沖放大系統的設計具有一定的實際意義。
  13. With the emergence of the 3g technology, the next - generation mobile network will support data bandwidth rates up to 2mb / s, which is opening up new possibilities for applications in the areas of online games, multimedia, location - based service, information searching services, mobile banking and so on

    隨著3g技術的飛速發展，未來移動通信網路將能夠提供高達2mb / s的數據帶寬，為j2me應用進入更多全新的領域提供了可能，如在線游戲、多媒體應用、定位服務、信息查詢以及移動銀行等。
  14. Users of bt ' s video on demand service, due to start next summer, will be able to choose from a library of thousands of films and tv shows. they will also be able to replay instantly programmes from the previous week ' s digital television schedules including eastenders, coronation street and desperate housewives. bt believes the service could revolutionise the way people watch television

    據英國每日電訊10月27日報道，英國電信公司稱，屆時通過與網際網路2兆帶寬相連的機頂盒，用戶可以在電視上收看到上萬部電影和電視劇集，甚至還可以點播上一周剛播出的加冕街瘋狂主婦等熱門肥皂劇。
  15. Compare to the normal rectangular waveguide, ridge waveguide has the character of broader bandwidth, smaller dimension, lower equivalent characteristic impedance, etc. because of these merits, it is used more and more widely, such as broadband ridge waveguide filter, broadband direct coupler, diplexer, frequency converter, phase shifter, ridge waveguide slot antenna array, and so on

    與普通矩形波導相比，脊波導具有工作頻帶寬、尺寸小、等效特性阻抗低等特點。由於脊波導本身的特點，使其得到了越來越多的應用，例如寬帶脊波導濾波器、寬帶定向耦合器、雙工器、變頻器、移相器、脊波導縫隙天線陣等等。
  16. Zno film is a novel - direct compound semiconductor with wide band gap energy of 3. 37ev and a exciton binding energy 60mev at room temperature. due to its the prerequisite for visible or ultraviolet light emission at room temperature, it has the tremendous potential applications for ultraviolet detectors, leds, lds. zno thin film is used widely and effectively in the fields of surface acoustic wave devices, solar cell, gas sensors, varistors and so on because of its excellent piezoelectrical performance

    室溫下禁帶寬度為3 . 37ev ，激子束縛能為60mev ，具備了室溫下發射紫外光的必要條件，在紫外探測器、 led 、 ld等領域有著巨大的發展潛力； zno薄膜以其優良的壓電性能、透明導電性能等使其在太陽能電池、壓電器件、表面聲波器件、氣敏元件等諸多領域得到廣泛應用。
  17. Based on the solutions for both constant and variable bandwidth storages, their relationship is derived

    在基於等帶寬存儲的求解法與基於變帶寬存儲的求解法的基礎上推導出它們的關系。
  18. Frequency - domain equalization. at the same time discusses some key problems in ofdm : high ratio of peak - to - average power of output signals, problem of synchronization, channel estimation, adaptive bit, power and subcarrier allocation. emphasize on channel estimation, and present a new algorithm which can filtering more interpolation errors and noise. for the sake of improve the performance of resist narrowband noise and make efficient use of the spectrum apply malvar wavelet division

    同時就ofdm系統中的一些關鍵問題如峰值平均功率比（ papr ）太高，同步問題，通道估計，通道、比特與功率必須動態分配進行了研究，著重研究了通道估計問題並提出一種改進的方法，能濾除更多的噪聲分量和插值誤差，提高系統的性能；為了提高抗窄帶噪聲的性能和提高通道利用率，用malvar小波變換實現了不等帶寬分配。
  19. The interleaver with channel spacing of 50ghz is designed and prototype device is achieved. we test experimentally the interleaved spectrum in the c - band which is rectangle with ripple of less than 0. 1 db. and through measuring its time delay, we obtain the character of its dispersion. a novel architecture of 50ghz mfpi interleaver with different passband widths is put forward at first

    2 、設計了通道間隔為50ghz的mgti型interleaver濾波器，獲得了該濾波器的原型器件；實驗得到了該器件在c波段兩組交錯分波的矩形化光譜，其紋波小於0 . 1db ，通過對器件時延的測量，間接獲得了其色散特性；首次提出mfpi型不等帶寬50ghz的interleaver濾波器技術方案。
  20. Design of different bandwidth interleaver

    不等帶寬奇偶交錯濾波器設計
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