band system 中文意思是什麼

band system 解釋
限幅制度
  • band : n 1 帶，繩；帶形物；箍；箍條；嵌條；鑲邊；鋸條； 〈pl 〉 （法官等的）寬領帶。2 束縛，羈絆；義務；...
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. Fares per trip per person are hk $ 220 and hk $ 250 ( for details, please refer to the attached fare table ), including one set of snack and drink per person, a tourism guidebook, cash coupons amounting over hk $ 150 worth of value, one set of three versions cruise vessels 3d souvenir card, complimentary use of the 4 - language tourist information system and a variety of performance on board, for example chinese traditional performance like mask changing, chinese acrobatism, magic and live band show. chartering service is also available

    船票收費每位每程港幣220至250元不等（有關航線詳情，請參考附頁） ，包括小食及飲品一份、香港旅遊小冊子乙本、總值超過港幣150元的精選現金優惠? 、一套三款的精美觀光船立體摺卡、免費享用四語言自助導游設施及每程不同的船上表演節目，例如中國傳統變臉藝術、雜耍，還有魔術及現場樂隊表演。
  2. Ais system is composed with communication processing module, base band processing module, radio module and interface module

    Ais系統由通信處理模塊、基帶處理模塊、射頻模塊和介面模塊組成。
  3. Broad band salary : a new sight of salary system

    寬帶薪酬的基本理論及初步設計
  4. Mobile communication system with broad band wireless ip

    移動通信系統中的無線定位技術及其應用
  5. In the next place, by studying the change of the resonant frequency of the whole system, this paper designs the circuit to track the resonant frequency of the system by cd4046 mainly. at the same time, in order to improve the efficiency and get better dynamic capability of the converter, we choose pll and fuzzy control after comparing the pll circuit, fuzzy circuit and pll ? fuzzy control circuit. in the end, this paper brings forward the control blue print to realize the drive control circuit of the high frequency converter, using the dsp chip as the key part to realize four routes of pwm drive pulses with dead band of the control system

    其次，通過對整個系統諧振頻率變化的分析和研究，設計了以鎖相環cd4046為核心的鎖相環控制電路，同時，在綜合比較鎖相環控制、模糊控制以及模糊控制和鎖相環復合控制三種控制演算法的基礎上，進行了系統模擬，得出採用復合控制可使跟蹤電路既具有鎖相環路較好的穩態性能，又擁有模糊控制較好的動態性能，系統魯棒性能好，同時也提高了逆變器的效率。
  6. The drive band and retainer feature a hex - drive system to distribute drive loading evenly and eliminate overstressing of the flexible elastomer bellows

    傳動環和護圈配置一個六角傳動系統，均勻的分配傳動負載，消除柔軟的彈性波紋管上的過度應力。
  7. The third band : the third band, or ring, consists of exteriorized beings who know they have passed through physical death, and still retain a " belief system " relativeto " what to expect " after physical death

    第三環帶：第三環帶，由知道他們已經歷了肉身死亡的形象化存在所組成，他們在肉身死亡后還保持著與「期待會發生什麼」有關的「信念系統」 。
  8. Because of huge data quantum and high demand of channel bit error rate for video transmission, and fallibility, time variability and limited band of wires channel, wireless video system is faced with lots of problems

    由於視頻業務的數據量大、對誤比特率要求高，無線通道又具有易錯、時變和帶限的特點，因此通道的誤比特率要比有線環境大得多，且隨著基站和終端位置、方向的改變而變化很大。
  9. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  10. In the non - coaxial bwo of l - band, the radius of the slow - wave structure is very large, and the volume and weight of the guiding - magnetic system are also very large. thus, the non - coaxial bwo of l - band is bulky and lumbersome and is inconvenient for real application

    若採用非同軸相對論返波振蕩器實現l波段的微波輸出，則要求慢波結構的平均半徑很大，導引磁場系統的體積和重量會變得較大，這給器件的小型化帶來了很大的困難。
  11. This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions

    首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。
  12. Due to the hardware characteristic ' s limitation, such as the poor speed of a / d, d / a conversion and dsp process, the most part of sr system adopt middle course. that is to say, by using the special digital converter or running relevant arithmetic, it converts the radio signal to intermediate frequency signal and completes the base - band signal process that is n ' t the veriest sr and is named " software defined radio ( sdr ) "

    由於受到硬體性能如a d 、 d a及dsp晶元處理速度的限制，目前的軟體無線電系統多採用折中的實現方案，增加專用的數字變頻器或者運行數字變頻演算法，將射頻信號變頻到中頻，然後再進行基帶信號處理，這樣的軟體無線電系統又被稱之為「軟體定義無線電」 ，它並不是真正意義上的軟體無線電。
  13. Range zero values analysis of ship - based unified s band system

    距離零值標校數據分析
  14. Time compressed single side band system

    時間壓縮式單邊帶系統
  15. Chapter four briefly researches the principle of range migration algorithm. the relation and difference between frequency scaling algorithm and range migration algorithm are studied carefully. through the point simulation under ultra wide - band system parameters, we compare their imaging performances

    第四章簡要介紹了距離徙動演算法原理，著重分析了頻率scaling演算法和距離徙動演算法之間的聯系及區別，並通過超寬帶（ uwb ）系統參數下的點目標模擬比較了它們的性能。
  16. Serial imitation of distributed parallel algorithm with row action method for band system

    帶狀方程組行處理法分散式演算法的串列模擬
  17. In the w - band, because the power amplifiers are under research, the development of w - band system is limited

    在w波段中，由於單片功率放大器尚屬于研究階段，使得w波段系統發展受限。
  18. In this paper, the driver of wcdma base band system is developed, debugging finished and the expected result achieved. a solid foundation is laid for successfully turning the product to market

    所開發的wcdma基帶系統驅動，目前已經完成了調試，並達到了預期的設計目標，將為該產品成功推向市場奠定堅實的基礎。
  19. The high - resolution spatio - temporal two - dimensional ( 2 - d ) spectra estimation of wide - band signal acts an important role in modern array signal processing. though abundant results acquired in theory, there are a lot of difficulties in the real time application of wide - band system

    寬頻段高解析度時-空二維譜估計是當前陣列信號處理研究的一個重要方向，雖然在眾多學者的努力下已取得了豐富的理論成果，但是一直以來寬頻段陣列系統的工程實現存在很多困難。
  20. Abstract : the threshold algorithm of the target detection is often used to detect target echo signals. its performance is based on signals - noise ratio. when signals - noise ratio is great than 6. 7, the target can be detected. in order to increase the signals - noise ratio, matching filter is often used. if the system is narrow band system, the noise is color noise and matching filter cannot be used. therefore, the signals - noise ratio cannot be increased. however, the geometrical characteristic of the laser echo signal is different with the noise. this paper advises the algorithm that detects the target by the geometrical characteristic. when signals - noise ratio is great than 2, this algorithm can detect target. this algorithm has been used in practice

    文摘:目標檢測的閾值法經常用於檢測目標的回波信號.它的性能取決于信噪比，當信噪比大於6 . 7時，能夠檢測出目標.為了提高信噪比，經常採用匹配濾波器.如果系統是窄帶系統，噪聲為色噪聲，無法使用匹配濾波器，不能提高信噪比.激光回波信號的幾何特徵不同於噪聲.提出了一種利用這種幾何特徵檢測目標的演算法.當信噪比大於2時，該演算法能夠檢測出目標.該演算法已經實際應用
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