signal spectrum 中文意思是什麼

signal spectrum 解釋
信號頻譜
  • 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...
  • spectrum : n. （pl. -tra ）1. 【物理學】譜，光譜；波譜；能譜，質譜。2. 【無線電】射頻頻譜；無線電（信號）頻譜。3. 【心理學】（眼睛的）余像；殘像。4. 〈轉義〉范圍，幅度；（連續的）系列。
  1. Ar power spectrum of vector vibration signal and its application

    功率譜分析及應用
  2. By using the processing method of sliding time window, the problem of the periodicity range ambiguity is solved. meanwhile, the problem of range ambiguity which is produced because the range of target is biger than the maximum range of radar is also solved by using this method. then, the pulse width parameter which is the most important in the parameters of fmicw is analyzed. the stricter restrict is given to ensure the range spectrum has only one beat frequency after signal processing. at last this thesis introduces the different signal processing methods of fmpcw and fmicw

    同時利用該方法解決了fmpcw信號的由於目標距離超過雷達的最大單值測距范圍而引起的距離模糊問題。然後對fmicw波形參數中最為重要的脈沖寬度進行了分析，給出了更為嚴格的約束條件，保證了信號處理后距離譜峰值的唯一性。最後，分別介紹了fmpcw和fmicw信號的不同處理方式，並對兩者不同的時域濾波性能進行了比較，並對二者的差異進行了分析。
  3. Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground

    針對存在的缺點，本文提出了一種應用於激光多普勒測速的高精度信號處理技術，即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜，搜索其譜峰值頻率，接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析，再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析，從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來，充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率，通過goertzel演算法獲得分析頻帶的高解析度頻譜，然後通過能量重心校正演算法對細化后的頻譜進行高精度校正，這樣不僅保證了演算法的高效性，而且大大提高了分析的精度。
  4. In this dissertation, the analog - digital channelized receiver is studied. the optimized system, spectrum reconstructing and accuracy signal frequency estimation algorithms are researched

    本文研究了模數混合通道化接收方案，著重研究其優化結構和關鍵技術以及線性調頻信號參數估計演算法。
  5. The concept of irradiance signal - to - noise ratio ( snr ) on the target plane and the minimum of the irradiance that can be detected by the detector was taken as the beginning, combined with a thorough analysis of the spectrum radiating feature of the target and the sky background, the atmosphere conditions, spectral filtering and the influence that the various components in the system have on the target irradiance on the detector ' s target plane and the background irradiance snr, the equation of the flying bomb ' s effect range affected by the point of burst measuring system is made, and all related factors that have an impact on the effect range are analyzed as well

    從探測器靶面上輻照度信噪比的概念、探測器的可探測輻照度最小值出發，在詳細分析目標、天空背景的光譜輻射特性、大氣條件、光譜濾波技術以及系統各環節對探測器靶面上目標與背景輻照度信噪比的影響的基礎上，推導了炸點測量系統對爆炸的飛行彈體的作用距離方程，分析了影響作用距離的諸因素。
  6. Moreover in speech enhancement, especially in reducing the pulse noise, morphological algorithm has its unique advantage. particularly morphological filter may maintain the preferable accurate of the speech signal in speech waveform, and which produces little impairment to the formant of speech. so the spectrum structure of the speech is retained well, and the quality of the speech will not be reduced

    特別是，在時域波形分析中，形態學濾波增強較小波去噪更好地保持語音信號的細節；在頻域分析中，形態學濾波對語音信號的基音頻率、頻譜斜率、共振峰等語音特徵的影響很小，因而能夠較好的保留語音信號的頻譜結構，使語音品質不致降低。
  7. This thesis tries to update the cmdsr system to achieve the characters below : real - time, better robust, higher recognition rate, non - special - man. considering the disadvantages of traditional improved spectrum subtraction speech enhancement, this thesis proposes the theory of fuzzy spectrum subtraction based on the fuzzy theory and improved spectrum subtraction speech enhancement ; as for the difficulties of detecting the endpoint of speech signal, the thesis gives the table of initial and the improved parameters, with which we can confirm the endpoints of mandarin digit speech ; the thesis puts forward two - level digit real - time speech recognition system, the first level is based on discrete hidden markov model which is linear predictive coding cepstrum ( lpcc ) and difference linear predictive coding cepstrum ( dlpcc ), the second level is based on formant parameters ; as for the realization of hardware, the thesis depicts the realization of every part of cmdsr based on the tms320vc5402 in detail ; as for the development of software, the thesis gives the software design flow chart of cmdsr, simulates the basic theory with matlab language and gives the simulation results

    針對傳統的「改進譜相減法語音增強」參數設定單一、環境適應能力差的缺點，提出了一種利用模糊理論和「改進的譜相減法」結合的「模糊譜相減法語音增強」 ;針對語音信號端點檢測困難的特點，通過matlab模擬試驗，給出了能夠準確確定數碼語音端點的初始和改進參數表;提出了利用基於線性預測編碼倒譜參數和差分線性預測編碼倒譜參數相結合的離散隱含馬爾可夫模型進行第一級識別、利用共振峰參數進行第二級識別的兩級漢語數碼語音識別系統，在保證系統實時性的同時，實現連接漢語數碼語音識別系統識別率的提高;在硬體實現上，詳細闡述了基於tms320vc5402的連接漢語數碼語音識別系統各部分硬體設計;在軟體開發上，給出了連接漢語數碼語音識別的軟體設計各部分的流程圖，並對各部分進行了matlab模擬，並給出了模擬結果。
  8. Lfmcw radar adopts the receiver with the structure of “ homodyne - fourier ”, and acquires the range spectrum after its if signal is sampled, and then processed by ftt

    Lfmcw雷達採用了「差拍-傅立葉」接收機結構，其回波中頻信號經數字採集后進行fft處理，從而獲得雷達的距離譜。
  9. The program includes the infrasonic signal data acquisition of three channels, 3 - d dynamic spectrum analysis, correlation analysis of 3 channel infrasonic signals, the calculation of wave direction, the wave speed, the spectrum analysis at any length and a real - time infrasonic gravity wave pressure - time ( p - t ) curve

    本程序支持3路次聲波傳感器信號的數據採集、動態譜分析及次聲信號的相關分析、能計算波源的方位角、波速以及任意時間段的譜分析，並實時給出次聲重力波的壓力?時間曲線（即p ? t曲線） 。
  10. Hi this thesis, the technique of detector array is used to obtain the location of anomalous infrasound, it is the basic of the study of prediction of earthquake. to derive useful information by using spectrum analysis on infrasonic signal. then combing with other methods a forecast could be made

    本課題主要是利用數字技術，採用用傳感器陣列計算異常次聲波波源的方位，這是今後預測震中位置研究的前提；並對次聲信號進行頻譜分析，提取有用的關于臨震次聲方面的信息，再結合其他的預報方法，作出準確的地震預報。
  11. The bandwidth ( megahertz ) and spectrum position of the signal arising from television scanning

    電視掃描信號所佔的頻譜位置和帶寬（以兆赫計） 。
  12. A method, which uses the spectrum of output signals and response of digital filters to restrict the lfm signal spectrum, is studied

    （ 4 ）研究了通道融合方法。基於濾波器特徵，研究了頻域加窗的通道拼接方法。
  13. Based on the results, the structure of the receiver is optimized to obtain better performance of parameter estimation. ( 4 ) the methods of signal spectrum reconstructing are discussed

    在常規線性調頻信號參數估計演算法基礎上，研究了通道化方案的通道參數對參數估計的影響。
  14. The method using the part imitate extract the continuous spectrum of the signal spectrum, than extract line - spectrum from the relatively flat line - spectrum by subtract it from the former spectrum

    該方法利用分段擬合方法擬合出信號功率譜的連續部分，從原始功率譜中減去連續譜得到拉平的線譜分佈，然後進行線譜特徵提取。
  15. As a result, the low - frequency contents increase as the centroid of signal spectrum experiences a downshift, in case that frequency is independent on quality factor, the offset of the centroid frequency is proportional to the integral of attenuation factor along wavepath, thus can he used to reconstruct the attenuation distribution

    假設介質的品質因子與頻率無關，地震波主頻的偏移量與吸收系數對傳播路徑的積分成比例，則通過它們之間的關系可以估測介質的吸收系數。
  16. According to the carrier wave leakage and mirror wave interference in the signal generation, this paper analyzes the source of waveform distortion and its influence to signal spectrum and pulse compression result

    針對生成信號中存在的載漏和鏡像等失真，本文對波形失真來源及其對信號頻譜及脈壓結果的影響進行了全面分析與模擬。
  17. Abstract : speech signal spectrum analysis is the time - varied spectrum analysis. fft technique on speech signal spectrum analysis are discussed in detail in this paper

    文摘:針對語音信號頻譜分析實際上是時變頻譜分析的特性，詳細地討論了用fft技術對語音進行頻譜分析過程中的方法問題。
  18. It will become the basic technology of those domains. in accordance to the characteristics of satellite communication system, it is necessary to limit the bandwidth of the signal spectrum and to decrease the isi

    針對衛星通信通道的特點，為了節約頻譜資源，需要對發射信號進行帶限；為使傳輸誤碼率足夠小，必須最大限度減小碼間干擾。
  19. This article discusses the vehicular short - wave single - channel direction finding system and gives a new direction finding algorithm based on signal spectrum correlation, to improve the system ' s performance to when coping with single side band signals

    文中針對車載短波單通道測向系統，提出了一種新的基於信號譜相關的測向演算法，改善了系統對單邊帶信號的測向性能。
  20. According to the characteristic of digital adaptive heterodyne filter and the conception of interference counteraction, the paper presents a new structure to enable the filter track the interference signal precisely and control the width and depth of notch. through simulation, it is demonstrated that the new structure can suppress one or more interference signals and the filtering operation has little influence on signal spectrum

    論文利用數字自適應外差濾波器的特點，運用干擾抵消的概念，提出了一種新的結構，能使濾波器精確跟蹤干擾信號，並能控制陷波的寬度和深度，經模擬驗證，該結構的濾波器能較好的抑制一個和多個干擾，同時濾除干擾后對信號頻譜的損害較小。
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