orthogonal signal 中文意思是什麼

orthogonal signal 解釋
正交信號
  • orthogonal : adj. 1. 直角的，互相垂直的；正交的；直交的。2. （統計數字）互不相關的。
  • 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 profit signal and noise vectors are orthogonal to each other, so the variation vector is the hypotenuse in a right triangle

    有效信號適量和噪聲信號適量相互正交，所以變量矢量是直角三角形的斜邊。
  2. The balanced multiwavelet was studied. for low - pass matrix filter p ( ), the orthogonal matrix r was selected to ensure the constant signal as a characteristic signal of balanced low - pass matrix filter rtp ( ) r, the corresponding balanced high - pass matrix filter is q ( ) r or rtq ( ) ) r which maintain the orthogonality and symmetry or orthogonality only respectively. as an application, the optfr - multiwavelet constructed by jiang was balanced and applied to image denoising and fusion

    研究了多小波的平衡處理，對低通濾波器p （ ）一般選擇平衡器為正交矩陣r ，使得常數信號成為平衡后的低通濾波器r ~ tp （ ） r的特徵信號，若要保持矩陣濾波器的正交性和對稱性，可選擇平衡后的高通濾波器為q （ ） r ；若只保持多小波的正交性，可選擇高通濾波器為r ~ tq （ ） r 。
  3. However, the paralleling communication can meet the requirements of high speed and fidelity in underwater signal transmissions. ofdm is a kind of novel paralleling transmission technology. the principle of ofdm is that the whole bandwidth can be divided into some subchannels, the high - speed serial signal stream is modulated by some orthogonal subcarriers

    正交頻分復用（ ofdm ）是近年來數字通信中流行的一種并行傳輸新技術，其核心思想是將整個可用頻帶分割成多個正交子通道，將待傳輸的高速串列碼流并行的調制在這些子通道載波上。
  4. ( 4 ) since there is no perfect theoretical guide, the characteristics of orthogonal wavelet, semi - orthogonal wavelet and biorthogonal wavelet in signal decomposition and reconstruction are compared, and the conclusion of the study demonstrates that semi - orthogonal wavelet is a good wavelet for fault diagnosis in tilting control system of tilting train. a new approach is presented for deciding the fault threshold. ( 5 ) a generalized wavelet neural network is put forward by integrating wavelet analysis with neural network

    （ 4 ）針對小波基的選擇缺乏完善理論指導的實際情況，通過對常用的正交、半正交、雙正交小波基提取信號特性的比較，確定出了適合擺式列車傾擺控制系統故障診斷的小波基? ?半正交小波基，並提出了一種新的確定故障檢測閾值的方法，可以快速地檢測出故障發生時刻。
  5. This article shows a new method to construct symmetric compacted orthogonal wavelet packet basis ： the original compacted orthogonal wavelet basis and scaling function are decomposed into symmetric and anti - symmetric parts respectively ， then we prove that three of four parts is also wavelet basis and another is scale function. we find it simple to process 1 - d signal. finally, by these results above, all the results above are applied to dsp

    本文提出一種新的對稱化方法，把一大類緊支集實值的非對稱正交小波函數分解成對稱和反對稱兩部分，並證明了其相應的兩部分仍然構成對稱和反對稱的緊支正交小波基，而且我們發現尺度函數對稱和反對稱部分分別是某子空間的尺度函數和小波函數。
  6. The fundamental concepts and theories of array signal processing are discussed. the definition and presentation of the narrowband signal is introduced briefly, and the technology of orthogonal sample is illustrated. then the statistical model of array signal processing is presented

    系統概要地論述了陣列信號處理的基本概念和理論，分析了陣列處理中窄帶信號的定義和表示方法，闡明了正交采樣等采樣方法，給出了陣列信號處理的統計模型。
  7. A novel method of content - based image segmentation using deformable template matching is proposed. a two - dimensional ( 2 - d ) deformable template based on orthogonal curves is built by pre - computing extensions of the deformable template along orthogonal curves and sampling the curves uniformly. then the definitions of internal and external energy functions are given according to the image segmentation problem, and genetic algorithm is used to obtain globally optimal solutions. the proposed method uses a lower - dimensional search space than conventional methods and reduces the sensitivity of the algorithm to initial placement of the template. experiments on real - world images and in simulations at low signal - to - noise ratio show the robustness and good performance of the method

    本文提出一種採用可變形模板匹配技術進行基於內容的圖像分割演算法.通過預先計算出可變形模板沿著變形的正交曲線，並對模板曲線及正交曲線進行離散抽樣，建立一基於正交曲線的二維（ 2 - d ）可變形模板，針對圖像分割問題定義控制可變形模板進行變形的內、外部能量函數，本文採用遺傳演算法搜索能量函數最小的全局最優解.該新演算法比傳統的可變形模板匹配方法降低了搜索空間的維數，減少了演算法對模板初始位置的敏感.對實際圖像及模擬低信噪比圖像處理的結果表明，新演算法具有良好的分割精度及穩定性
  8. To overcome the signal effect, we renovate the auxiliary antenna in the conventional side lobe canceller system to two - orthogonal - channel polarization antenna

    為了克服目標效應，將常規旁瓣對消系統的輔助天線改為雙極化正交天線。
  9. Theoretical analysis and computer simulation prove that the scheme can overcome the signal effect and improve the anti - jamming ability of radar system. then as to the polarization radar, a scheme that deploys omnidirectional two - orthogonal - channel antenna array besides the main antenna is proposed

    理論分析與模擬均驗證了，與常規旁瓣對消系統相比，該思路可以有效抑制目標效應，改善雷達系統的抗干擾性能。
  10. Orthogonal signal correction ( osc ) is provided a novel spectral pre - processing method in recent years, which is based on the orthogonal projection

    基於正交信號投影分解的正交信號校正（ osc ）方法，是近年來在化學計量學領域中提出的一種全新數據預處理方法。
  11. ( 5 ) based on subspace orthogonal algorithm, a method for estimating the parameters of wide - band chirp signal is studied. it is shown that accurate estimation can be obtained for wide - band chirp signal even under low signal - to - noise ratio ( snr )

    （ 6 ）基於dft原理和fft技術，提出了適用於非高斯噪聲環境的線性調頻參數估計的快速離散chirp傅立葉變換（ dcft ）演算法。
  12. Except, the error model of orthogonal modulation and double frequency technology were studied. third, the design and implementation of ultra wide band lfm generator were studied. an ultra wide band lfm pulse compression signal generator with 400mhz carrier and 300mhz absolute bandwidth was developed successful

    ?第三部分在理論分析的基礎上對超寬帶lfm信號源系統的設計和實現技術進行研究，成功研製出了中心頻率為400mhz ，帶寬為300mhz ，重復頻率為1khz ，脈寬為20 s的線性調頻信號。
  13. In term of the orthogonal property of alamouti scheme and the character of the ofdm system equivalent model expression of receiver signal for stbc - ofdm system was obtained by flexible transform method so that the inverse of matrix was avoided using direct - decision mode and the complexity of computation and receiver was decreased. the simulation results show the validity and efficiency of the proposed receiver. ( 6 ) an adaptive equalization algorithm used in space - time block coded ofdm ( stbc - ofdm ) system with alamou

    該演算法充分利用了alamouti編碼的正交特性和多發射天線ofdm系統特點，通過靈活的變換對接收信號進行等價的表示；通過對11矩陣求逆的研究，將塊最小二乘遞推演算法（ brl ）中的zkxzk的矩陣求逆分解為k個2x2矩陣的求逆，從而降低了自適應演算法的運算量和接收機的復雜度。
  14. Errors resulting from discrete sampling of zernike orthogonal ( space ) matrix is correct by error correction table. the edge detection precision is higher than 0. 1 pixels though signal to noise ratio up to 20db

    改進了zernike正交矩（空間矩）亞像素邊緣檢測演算法，用誤差修正表對離散采樣引起的誤差進行修正，使信噪比達到20db時，邊緣檢測精度仍然優於0 . 1像素。
  15. On the other hand, recent advances in communication and modulation methodologice, as well as in adaptive digital signal processing and error detection and correction, have opened the way for the development of effective medium access control and physical layer protocols that support power line communications ( plc ) networks operating at speeds comparable to those obtained from specially wired and more recent wireless local area network in mid - 2001, an industrial standards organization called the homeplug powerline alliance, originally founded by 13 companies including cisco, motorola, intel, panasonic, and texas instruments, announced the completion of the homeplugl. o specification for a l. 0mb / s class in - home power line networking technology based on orthogonal frequency - division multiplexing ( ofdm )

    但是，近年來通信和調制技術的發展，特別是自適應數字信號處理和錯誤檢測及糾正技術，使電力線通信技術出現新的mac層和物理層協議，其性能可以和一些專用有線網路以及最近十年流行的無線局域網技術想媲美。在2001年，一個由13個公司（包括cisco ， motorola ， intel ， panasonic ， andtexasinstruments ）組成的組成的標準組織? ? homeplugpowerline聯盟，頒布了完整的homeplug1 . 0規范，改規范使基於正交頻分復用技術，主要針對10mb s室內電力線網路技術。
  16. With the rotational complex empirical orthogonal function rceof, we analyzed the spatio - temporal evolvement of the latest fifty years ssta of pacific ocean. came to a result that there are two strong signal center : one at middle and east pacific ocean near equator, the other at 40n. it will take several months to half a year for the signal to reach west pacific ocean from east coast of pacific ocean near equator correspond to enso

    運用轉動復自然正交展開rceof分析近50年太平洋海溫場的時空結構，得出在赤道中東太平洋和40n附近有兩個海溫異常強信號中心赤道東海岸太平洋海溫異常信號對應enso信號在幾個月到半年左右傳播到赤道西太平洋海溫主要周期大部分落在310d的范圍內，還存在年和準兩年變化。
  17. First, the thesis introduced conception and characters of software radio ; second, the thesis analyzed architectures of software radio ; third, the thesis discussed critical technologies of software radio and applications of dsp in software radio, moreover, realized arithmetic of crc coding, convolution code, orthogonal digital frequency conversion and multi - speeds signal process ; finally, the thesis prospected foreground of software radio

    本文首先介紹了軟體無線電的概念和特徵，接著分析了軟體無線電體系結構，論述了軟體無線電的關鍵技術及dsp在軟體無線電中的應用，在tms320c54x上實現了crc編碼、卷積碼，完成了正交數字變頻和多速率信號處理的dsp演算法，最後展望了軟體無線電的應用前景。
  18. This paper gives an overview on the development of wireless communication and the orthogonal frequency division multiplexing ( ofdm ) technique. basic characters of wireless channel, transmission principles and signal frame structure design of ofdm are introduced. main non synchronization factors between ofdm transceivers are pointed out

    本文介紹了無線通信與多載波正交頻分復用（ ofdm ）技術的發展概況，闡述了無線通道的基本特性、 ofdm的調制解調原理與信號幀結構的設計，指出了導致ofdm收發信機間不同步的主要因素。
  19. A signal reconstruction theorem under complete set of orthogonal integral transform

    完備正交積分變換下的信號重構
  20. In practice, it is difficult to keep orthogonal signal constellation between different users. so there always exists mai in ds / cdma system, which limits system capacity

    但實際中，很難保證到達接收端的各用戶信號的完全正交性，由此而產生的多址干擾極大的限制了系統容量。
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