signal autocorrelation 中文意思是什麼

signal autocorrelation 解釋
信號自相關
  • 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...
  • autocorrelation : n. 【自動化】自相關。
  1. Two detection methods of chirp signals are presented in the dissertation : the cyclic autocorrelation detection method and the correlation detection method of cyclic autocorrelation function. it is shown that the two methods both have an excellent performance of blind detection. the performance analyses of the two detection methods are both carried out for additive noise or multiplicative noise, and the output signal - to - noise ratio ( snr ) expressions of the two methods are also derived

    通過研究提出了兩種線性調頻信號的檢測方法?基於循環自相關函數包絡的檢測方法和基於循環自相關函數的相關函數包絡的檢測方法，兩種方法均可實現信號的盲檢測，有良好的檢測性能，文中還分析了加性噪聲及存在乘性和加性噪聲情況下兩種檢測方法的性能，推導出了輸出信噪比公式。
  2. Because the adaptive algorithm of conventional adaptive noise canceller is the least mean squares ( lms ), and the convergence rate of lms is heavily dependent on the eigenvalue distribution of the autocorrelation matrix of the input signal, thus lms converges at unacceptably low rates when the input signal is colored noise or speech

    由於傳統自適應噪聲抵消系統（ anc ）自適應演算法主要採用lms演算法，而lms演算法收斂速度依賴于輸入信號自相關矩陣特徵值的分散程度。因此，當輸入信號是語音或有色噪聲時， lms的收斂速度很慢。
  3. In wcdma system which uses direct sequence to spread spectrum, the spread spectrum code ( pn code ) phase of the receiver must be synchronized with that of the received signal precisely to despread and demodulate the signal correctly. multipath channel exists in the mobile communication environment for the radio signal reflection by obstacles between transmitters and receivers. by using the autocorrelation of the spread sprectrum code, rake receiver can process received signals and therefore multipath components can be resolvable

    在wcdma系統中，為正確解擴解調接收到的擴頻信號，接收機本地產生的擴頻碼（ pn碼）相位必須和接收信號中的擴頻碼相位完全同步;同時移動通信環境中的傳輸信號由於接收機和發射機之間的直達路徑有可能被建築物或其他障礙物所阻礙，總是經過折射或反射的多條路徑后才到達接收機，從而產生多徑通道。
  4. A scheme to identify the stochastic signal and its modes by computer is introduced and using the method of the autocorrelation functions for recognizing the stochastic audio signal fleet has been applied

    摘要分析了利用自相關函數法實現快速識別隨機音頻信號，介紹一種用計算機實現隨機音頻信號處理與模式識別的硬體結構和程序設計。
  5. The basic principle of variable step - size algorithm is analysed, as the facter of variable step - size algorithm mse, the non - linear function of error signal, autocorrelation of error signal and the kurtosis of error signal is proposed, and four new variable step - size cma is achieved. 3. the kurtosis of equalizer output as a new variable step - size facter is propose, which provide an alternative method of variable step - size, and a new variable step - size cma by putting it into cma is achieved

    3 、分析了將輸出信號的峰度用於步長控制的可行性，為變步長演算法步長的控制參量提供了新的選擇，並將其應用於恆模演算法的步長控制，得到一種新的恆模改進演算法，並通過計算機模擬實驗驗證了改進演算法優良的收斂性能。
  6. The work of this dissertation is focused on research of some key technics in signal design and processing of mcpc signal. the main content of the dissertation is summarized as follows : it gives a detailed description of the form of the mcpc waveform and its mathematical model, and analyses the formation and properties of phase coded sequence. it discusses the effect of signal parameters on autocorrelation, power spectra and ambiguity function in forms of single pulse and pulse train and compares different kinds of single pulse signals and pulse train signals

    本文圍繞著多載波相位編碼信號在信號設計與信號處理的若干關鍵問題進行了研究，主要做了以下工作:描述了多載波相位編碼信號（ multicarrierphasecoded ，簡稱mcpc ）的信號形式，給出了其數學模型，對其中相位編碼序列的構成方式與特性進行了分析;從單脈沖和脈沖串兩種信號形式入手，對多載頻相位編碼信號的參數在自相關函數、功率譜密度和模糊方程上的影響作了詳細地討論，對不同調制方式的單脈沖和脈沖串信號進行了比較。
  7. For fh signals, we proposed two algorithms too, one is a signal detection algorithm based multiple - hop autocorrelation ( mhac ) of fh signals, and the other is a parameter estimation algorithm based on time - frequency analysis

    對跳頻（ fh ）信號，本文提出了基於多跳自相關的信號檢測方法和基於時頻分析的跳頻參數估計方法。
  8. It is useful for selecting reasonable system parameters through it. for the data process in dial system, we discussed the combined effects of temporal autocorrelation and lasers cross correlation and signal averaging

    對于dial系統中的數據處理，本文著重討論了信號平均技術和激光器回波信號時域自相關以及激光器互相關對co2dial系統測量靈敏度的影響。
  9. However, multipath components can be resolvable due to the autocorrelation of the spread spectrum signal, thus the optimal receiver equals coherent rake reception, i. e. maximum ratio combining the independent components which endure flat fading or frequency non - selective fading. synchronization of pn code and separation of resolvable multipath components need to estimate the exact time delay among the multipath components

    但是利用擴頻信號的自相關特性，可分辨多徑可以被有效分離，最優接收機等效為對多個具有獨立平坦衰落通道（或頻率非選擇性通道）特性的多徑信號進行最大比合併，即相干rake接收。
  10. Analyze window shows the microphone signal, autocorrelation data and absolute value of autocorrelation data. beginning of the yellow data curve are post processing data

    分析窗口展示相關數據的話筒信號、自相關數據和絕對值。黃色數據曲線的起點是標桿處理數據。
  11. The power spectrum and autocorrelation can be concluded to the second - order statistics. as an extension, the high - order statistics of the dsss / bpsk signal is

    本文分析了dsss / bpsk信號的倒譜和周期譜，並在此基礎上對其進行檢測。
  12. The pseudorandom codes have a good autocorrelation of double - values. in recent years, to solve the problems of anti - interference and the ambiguity of range and velocity, a lot of countries do much research to change the waveform of radar signal. the most important improve is to use symmetrical pulses to interrupt frequency modulated continuous wave ( fmpcw )

    早期的fmicw採用偽碼序列截斷，偽隨機碼具有良好的雙值自相關特性，其中最常用的是m序列截斷的fmicw 。近年來，為了解決抗干擾和測距、測速模糊問題，許多國家已對雷達信號波形的改進進行了研究。
  13. One is using the autocorrelation function to detect the speech terminal, the other is using the coefficients based on the one - sided autocorrelation sequence to replace the original speech signal and then extract the speech feature to recognize. isolated word recognition experiment based on dtw shows : it can reduce the disturbance of noise effectively and get the high recognition rate. it is of great advantage to apply when snr signal to noise rate is low

    對含噪語音在自相關域上進行處理，以其自相關函數值為參數進行端點檢測，以基於單邊自相關序列的lpc倒譜系數作為語音的特徵參數進行語音識別，實驗表明：這種方法較好地消除了噪聲對語音信號的干擾，並獲得了較高的識別率。
  14. A new variable step - size cma blind equalization algorithm is introduced to conquer the defects of cma, in which the step size is controlled by the estimation of error signal ' s autocorrelation

    摘要提出了一種自適應變步長恆模盲均衡演算法，利用剩餘誤差信號的自相關函數估計值作為控制步長的因子來自適應改變步長的大小，克服了恆模演算法存在的固有缺陷。
  15. Chapter 4 gives out the blind detection algorithm of unknown fh signal using multi - hop autocorrelation technique and blind signal separation algorithm using joint approximate diagonalisation of eigen - matrices ( jade ) technique. some elementary simulation results are also presented here

    第四章對用多跳自相關技術做跳頻信號盲檢測以及用特徵矩陣聯合對角化技術（ jade ）做跳頻信號盲分離的演算法做了研究和模擬。
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