broadband signal 中文意思是什麼

broadband signal 解釋
寬帶信號
  • broadband : 寬帶
  • signal : n 1 信號，暗號；信號器。2 動機，導火線 （for）。3 預兆，徵象。adj 1 暗號的，作信號用的。2 顯著的...
  1. The software radio consists of several parts as follow : analog front end, broadband a / d and d / a, digital upper / down converter, high - speed signal processor and so on

    它由以下幾個部分組成:模擬前端，寬帶a / d和d / a ，數字上/下變頻器，高速數字信號處理器等。
  2. Delay line oscillator is composed of broadband amprifer adjustable attenuator and saw sensor device. after output signal of delay line oscillator is smoothed, it mixes with 109mhz local oscillation signal. its differential frequency signal is smoothed by low - pass filter trimmed by shaping circuit and processed by digital processing circuit

    延遲線振蕩器由寬帶放大器、可調衰減器和聲表面波質量傳感器件構成。延遲線振蕩器輸出信號經濾波后與109mhz的本機晶體振蕩器輸出信號相混頻，通過低通濾波取其差頻，並經整形後由數字信號處理電路處理。
  3. With the established rf front - end system simulation platform, adding the digital modulated baseband signal, this paper simulated the multifold digital modulated signal ’ s transmission, such as 2ask, qpsk, and 16qam. then researches of power compression and phase noise of local oscillation influence the bit error ratio for different modulated system. the designing is satisfied multifold functions request with the high - powered and integrated broadband rf front - end

    隨后在建立的寬帶射頻前端通用模擬平臺上，加入基帶數字調制信號，對多種數字調制格式的信號在該通用平臺上的傳輸作了研究，模擬了2ask 、 qpsk和16qam等調制格式信號的發射與接收，研究了功率壓縮和本振相位噪聲對不同調制的誤碼率影響，實現了滿足多種功能要求的寬帶高性能綜合射頻前端的設計。
  4. Give some simulation result about noise cancelling, find the optimal delay, then estimation of doa with the narrowband signal and broadband signal at different snr. the results show that the method is feasible

    對本艦噪聲抵消過程進行了模擬，首先確定最佳延遲，然後在抵消的基礎上分別對窄帶和寬帶目標信號進行方位估計，驗證了該方法的正確性。
  5. The broadband signal is generated by high speed d / a, and the logical control of the system such as the interface timing control of ide or sdram is implemented by fpgas

    採用高速d / a實現輸出信號的高寬帶，採用多片fpga完成整個系統的時序邏輯控制，比如ide介面時序的實現， sdram的操作等。
  6. Multi - channel deconvolution, based on multi - channel signal analysis, is presented to recover receiver function from three - component teleseismic p waveforms clustered within certain backazimuth and epicenter distance, to increase the resolution of receiver function. wavelet inversion is also introduced to broadband receiver function, to solve for nonuniqueness cased by linear approximation of nonlinear problem, and broadband receiver function is decomposed into multi - resolution versions, and the inversion result for the low - resolution version is iteratively taken as the initial model for the high - resolution, and gradually obtain the inversion model for broadband receiver function

    為克服廣義線性反演對初始模型的依賴性，並保持其快速收斂的特點，本文首次將小波變換引入到接收函數波形反演，將接收函數分解到不同的分辨尺度上，分別進行廣義線性反演，並將低解析度的反演結果作為高解析度反演的初始模型，漸近地獲取寬頻帶接收函數的模型，克服了非線性問題線性化帶來的非唯一性。
  7. Subsequently, the primary knowledge of sound wave and the model of signal transmission are introduced. at last, the models of the narrowband and broadband array signal processing, the theory of the number of source signal estimation, the theory of invariable estimation and usage of high - order statistics in array signal processing are presented

    文中詳細介紹了聲波傳播的基本知識、信號傳輸模型；窄帶和寬帶信號的陣列處理模型；信號源個數估計理論；波達方向估計理論以及高階統計量在陣列信號處理中的應用。
  8. And validate of this method for broadband signal is also checked

    對目標信號為寬帶時進行了理論驗證。
  9. In the broadband incoherent beamspace high resolution method, the outputs of mvdr beamformers are used to suppress the interference from outside the beam coverage region in each subband. computer simulation results show good performance at low signal to noise ratio ( snr )

    該方法克服了基於預成恆定束寬波束輸出的寬帶相干高分辨處理方法不能有效抑制波束區域之外強于擾的不足，模擬結果表明該方法在低信噪比具有良好的性能c
  10. Secondly, basing on the theory of on - off gain of small signal, the raman gain coefficient for frequency shift between 0. 5 and 20 thz of standard sigle mode optical fiber is measured by pump - probe method through a super luminescent diode ( sld ) as a broadband small signal probe source. thirdly, numerical simulation analysis of gain characteristic of raman fiber amplifier for c band wdm signal light is made according to the raman gain coefficient of the fiber measured before through target and four rank runge - kutta method. at the invariability of wavelength and maximum power of each of two pumps, schematic of powers of two pumps for best flatness on c band wdm optical gain was found out, at the same time, the factors of resulting in gain saturation is analyzed, too

    本文首先應用經典的電磁理論對拉曼光纖放大器的工作機制進行了分析，然後，根據小信號理論推導出的開關增益求出了光纖拉曼增益系數的表達式，採用泵浦-探測波的方法，利用超輻射激光二極體（ superluminescentdiode簡稱sld ）作為探測光源，測量了所用標準單模光纖頻移為0 . 5 - 20thz的拉曼增益系數，之後根據所測得的光纖的拉曼增益系數譜對應用該類光纖構成的放大c波段wdm光信號的拉曼光纖放大器的增益特性採用打靶法和四階龍格- - -庫塔進行了數值計算，在給定了兩個泵浦光源的波長和最大功率后，找出了反向泵浦情況下使c波段wdm光源增益最平坦的兩個泵浦的各自最佳功率，同時也分析了導致信號光飽和的原因。
  11. Some modulation parameters, such as the carrier frequency and the symbol rate, can be estimated prior to the recognition of modulation types. such other parameters as the modulation index, the modulation frequency deviation, and the signal broadband can be further estimated after recognition

    部分調制參數如載波頻率、符號速率在識別之前獲得，在識別完成之後可以進一步估計調制指數、調制頻偏、信號帶寬等其餘參數。
  12. We take the relation of grating - lobe between frequency, arrays commutation and concentric ring array into consideration, and select the proper elements for different frequency successfully. finally, adaptive digital beam forming of broadband signal in circular array are investigated

    分析了在寬帶信號情況下，如何從共形陣陣元中選擇合適的陣元用作數字波束形成，並針對一應用實例進行了陣元選擇設計。
  13. On detecting broadband signal in distortive channels

    畸變通道中寬帶信號檢測性能的研究
  14. If the broadband signal is dealt with the narrow beam former, the serious disorder of the signal will be occurred

    如果簡單的用窄帶波束形成器處理寬帶信號，會使信號產生嚴重的畸變，這就提出了寬帶波束形成的問題。
  15. Broadband array signal processing is a main direction of underwater acoustic signal processing, but the broadband signal processing is more complex than that of narrowband

    寬帶陣列信號處理是水聲信號處理的一個主要研究方向，但是寬帶水聲信號的處理遠比窄帶信號復雜的多。
  16. Get the approximate and the accurate correlation equations of pressure and velocity for narrowband signal, and the approximate correlation equation for broadband signal. 4. introduce the method of the genetic algorithms, and perform an improvement

    在窄帶信號下，得出了近似條件下和精確條件下的相關方程，而在寬帶條件下，得出近似條件下的表達式，從理論上推導出了聲壓和質點振速之間的相關方程組。
  17. A broadband matching network is designed for the broadband signal antenna, using one of the broadband matching technologies - real frequency theory. secondly, the relative theory, design and emulate of the power amplifier are presented, and a power amplifier of high output power and high efficiency is designed, according to the standards of the responder system

    2 ，討論了功率放大器的相關理論、設計、模擬及實現，主要包括:功率放大器的穩定性分析、負載線法分析以及功率放大器工作類別分析;根據應答器系統指標，完成了系統中大功率高效率的能量載波功率放大器的設計。
  18. This dissertation is devoted to the study of several aspects of the broadband signal processing, concerning broadband coherent interference suppression, design of broadband array and doa ( direction of arrival ) estimation of broadband source

    本文將致力於研究寬帶陣列信號處理中關于寬帶相干干擾的抵消、寬帶基陣設計和寬帶方位估計等問題。
  19. Broadband signal and environment generators

    帶信號測試儀器
  20. In addition, broadband signal is used in radar and communication more and more

    在通信方面也越來越多地用到寬帶信號。
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