band limited 中文意思是什麼

band limited 解釋
頻帶限制
  • 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；...
  • limited : adj 1 有限的，有限制的；【政治學】（君主權力）受憲法限制的。2 〈美國〉乘客名額有限制的，速度快的...
  1. Taking a view of pure time field, this paper presents dissolvable signals and basic concepts of sampling ; and also gives the very condition of discrete of signal ; this paper uses linear algebra to analysis this kind of signal and then gives some results and relevant deductions ; based on these results, 1 made a further step to analysis some typical band - limited signals in order to proof the coherence of my theory of dissolvable signal to the typical sampling theory ; i made some preliminary study about the feasibility of sampling and recovering of this kind of signal

    本文從純時域角度出發，給出了可分解信號及其采樣的基本概念；也指出了信號可離散化的條件；利用線性代數理論給出了對這類信號進行采樣的分析理論及相應的推論；並用這些結論對典型的帶限信號進行了分析，證明可分解信號采樣定理與經典采樣理論的一致性；初步探討了對這類信號的實行采樣與恢復的工程實現問題。
  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. Band - limited seismogram

    限帶地震記錄
  4. Chapter 3 treats the algorithm implementation of demodulator in the receiving asic of dvb - s. in detail, demodulation includes carrier recovery and symbol synchronization. together with the transmission characterization of band - limited input signals the chapter proposes a scheme for implementing carrier recovery loop

    解調具體分為載波恢復、時鐘同步兩大部分，本章著重論述了載波恢復的原理並結合dvb - s輸入信號傳輸特性，提出了相應的實現方案，對部分電路進行了性能分析。
  5. In order to achieve high data rates on the severely band - limited underwater acoustic ( uwa ) channels, bandwidth - efficient modulation techniques must be employed, together with some sophisticated signal processing algorithms, such as adaptive equalization technique for the intersymbol interference caused by channel multipath propagation

    在帶寬嚴重受限的水聲通道中實現高數據率通信，必須使用高帶寬利用率調制技術，並結合自適應均衡等技術以有效地克服通道多途傳播產生的符號間干擾。
  6. Such as a function is known as a band-limited function.

    這樣的函數通稱為有限頻帶函數
  7. Because most images contain sharp edges, they are not strictly band - limited

    因為絕大多數圖像包含陡沿（ sharpedge ） ，它們沒有嚴格的帶限。
  8. By theory and practice simulation, the several types of constant envelope modulation techniques are analyzed and compared, including theirs modulation principle, phase path, the modulated wave envelope, power spectrums, error bit rate and the influence of its power spectrums of the band - limited and non - linear, etc. especially we have researched the ijf - oqpsk modulation technique, and the performance of its inter - symbol interference and time jitter free, and its strongly resisting of spectral spreading

    結合理論和實驗模擬結果，分析討論了衛星通信中的各種恆包絡調制技術，對它們的調制原理，相位路徑，已調波包絡，功率譜密度，誤碼性能，以及帶限非線性通道對其功率譜的影響等方面都作了研究和比較。特別研究了ijf ? oqpsk在消除碼間干擾和定時抖動方面的性能及其優良的旁瓣特性和抑制頻譜擴展特性。
  9. This paper mainly discusses the design principles and chief techniques of a digital accessing system for power - line communication net ( plcn ). the technology of low bit rate speech compression high - speed modem based on plcn adaptive equalization to the channel anti - jamming and anti - fading are applied in this system. so speech tele - control data and tele - protection signals can be transmitted high quality in the band - limited channel

    該系統綜合應用了低比特率語音信號壓縮編碼技術、基於電力通信網的高速調制解調技術、信號傳輸的通道自適應均衡技術和抗干擾、抗衰減技術，可在帶限通道中高質量的傳輸語音、遠動數據和遠方保護等信號，具有較高的整體性能。
  10. From the research of ijf - oqpsk, we draw the conclusion that, compared with bpsk, qpsk and msk modems, in the band - limited and non - linear channel, it has nearly constant envelope, less spectral spreading, better pe performance and the less interference of the adjacent channel, et. so, it is more suitable for the satellite communication channel

    通過對ijf ? oqpsk的分析研究可知，它相對于傳統的bpsk和qpsk調制方式，在帶限非線性通道下，具有包絡近似恆定，頻譜擴展小， eb no惡化小，對鄰道產生干擾弱等優點，因而它更適合於衛星通道。
  11. Nowadays, high data rate communication through band - limited underwater acoustic channel ( uwac ) is of general interest in the field of underwater communication

    通過帶寬有限的水聲通道獲得高速數據傳輸，是目前水聲通信領域的研究熱點。
  12. Basing on the result of former research, this paper synthetically analysis character of common window function and interpolation, author has conclude a few of basic principle during choosing windows function and interpolation in the process of ct image reconstruction in the terms of windows, among of the introduced windows, band - limited window, triangle window and cosine window must be the ideals choose

    基於前人的研究成果，本文綜合分析了常見窗函數與內插函數的特性。理論分析和實驗結果得出可供選擇的選擇窗函數與內插函數以及如何根據實際檢測目的來選擇較好參函數所遵循的原則。
  13. Sampling theorem for band - limited low - pass signal with disturbance from a sine signal

    正弦信號干擾下低通帶限型頻譜信號的采樣
  14. But the increase of data rate is limited by band - limited transmission system, and higher the data rate is, more the limitation is

    但是帶寬有限的傳輸系統限制了數據率的迅速增長，而且這種限製作用隨著數據率的增加而變得越來越嚴重。
  15. Band - limited signal

    限帶信號
  16. Band limited communication

    限帶通信
  17. The channel of satellite communication is described to be the typical band - limited and non - linear channel. based on its special characteristic, we have the principles to select a type of modulation techniques for satellite communication systems

    本文對帶限和非線性的衛星通道作了描述，在此基礎上得出衛星通信中選擇調制技術的準則和依據。
  18. Band limited frequency spectrum

    限帶頻譜
  19. Band - limited function

    限帶函數
  20. Band - limited spectrum

    帶限頻譜
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