頻率計演算法 的英文怎麼說

中文拼音 [bīnlǜjìyǎnsuànfǎ]
頻率計演算法 英文
frequency-respones approach
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 計 : Ⅰ動詞1 （計算） count; compute; calculate; number 2 （設想; 打算） plan; plot Ⅱ名詞1 （測量或計算...
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 頻率 : frequency; rate
  1. And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results

    接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。
  2. The approximate computation method is used in float point computation of system ' s control algorithms on fixed - point dsp after comparing several methods in respect of running time and program space involved, which attains quick computation besides high precision and implements output voltaic with low harmonic and high control precision of frequency

    通過從運行時間和佔用空間等方面比較在定點dsp上實現浮點數運算的幾種方法，並選擇了近似計演算法作為系統控制演算法浮點數運算的方法，在保證足夠計算精度的前提下達到計算的快速性，實現低諧波和頻率控制精度高的輸出電壓。
  3. A novel joint estimation algorithm for ranges, frequencies and doas of multiple near - field narrowband sources is proposed in the near field is proposed

    摘要提出了一種新的多個近場窄帶信源距離、頻率及到達角三維參數的聯合估計演算法。
  4. It can dynamically determine the structure information need to index according to real query loads and opti mization of index. second, to consider the effects of structural information on result relevance ranking, this dissertation proposes a ranking algorithm that consider both the frequency distribution and structural distribution of keywords in the result, and a dynamic element - oriented method to compute the weight of keywords

    第二，為考慮xml數據中的結構信息對查詢結果相關度值的影響，本文提出了一種綜合考慮關鍵字頻率分佈特徵和結構分佈特徵的查詢結果相關度演算法，以及一種基於節點的關鍵字權重計演算法，取得了更優的檢索性能。
  5. Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service, multi - modulationmode and multi - processdatarate. first, related software defined radio theory is introduced ; later, channels of transmitter - receiver are designed with consideration of data format, modulation, fec, interwaving. and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding

    本文首先介紹了相關的軟體無線電理論；然後完成了包括數據格式，調制方式，糾錯碼方式，交織器和擾碼器等部分的中頻數據機通道設計；接著著重介紹了系統中使用的音頻壓縮演算法cvsd （連續可變斜率增量調制）的原理和實現，以及作為前向糾錯碼的卷積碼編碼理論和編解碼的高效實現。
  6. The project uses for reference the algorithm thought of sbc ( subband coding ) to measure off the audio to the corresponding frequency width and encode it by the different sensitivity of human hearing, which results in the lower coding rate and bearable voice quality. the algorithm processing low bit - rate audio is designed to be self - adaptive by the situation of network. the component developped by that algorithm and project has already been used in the realtime interactive educational system

    該方案借鑒sbc （ subbandcoding ）子帶編碼演算法思想，將音頻按對人聽覺敏感程度不同劃分為相應的頻帶並進行相應的編碼，從而得到較低的編碼率和較好的語音質量，設計了可根據網路狀況進行自適應的低帶寬音頻處理演算法。
  7. Therefore, the paper mainly discusses the pluses and minuses of the multifarious frequency estimation algorithms, and develops an adaptive method of evaluation on dft for power system frequency, which is based on the equal - angle sampling principle

    因此，本文著重論述了歷史上各種頻率測量演算法的優缺點，並在自適應調整采樣率的等角度采樣原則的基礎上，提出了一種基於dft的電網頻率測量的自適應估計演算法。
  8. The approximate computation method is used in float point computation of system ' s control algorithms after comparing several methods in respect of running time and program space involved, which attains quick computation besides high precision and implements excitation voltage with low harmonic and high control precision of frequency

    通過從運行時間和佔用空間等方面比較實現浮點數運算的幾種方法，並選擇了近似計演算法作為系統控制演算法浮點數運算的方法，在保證足夠計算精度的前提下達到計算的快速性，實現低諧波和頻率控制精度高的勵磁電壓。
  9. Aiming at the lower performance and floor effect of the traditional orthogonal frequency division multiplexing channel estimation, the ofdm channel estimation algorithm based on wavelet recursive least square support vector machine ( wrls - svm ) is proposed

    摘要針對傳統多徑衰落下的ofdm導頻通道估計性能低下，地板效應的缺陷，提出了基於導頻的小波遞歸最小二乘支持向量機（ wrls - svm ）時變通道頻率估計演算法。
  10. The thesis mainly introduces the system monitoring software of digital storage oscilloscope based on the arm platform, combining with the sample of 100m digital storage oscilloscope developed by our research group. the article contains : 1. analysis of the project requirement of “ 100m digital storage oscilloscope ” ; 2

    主要內容為: 1 .分析「 100mhz數字存儲示波器」的項目的監控軟體需要; 2 .介紹數字存儲示波器系統監控軟體的總體設計; 3 .分析系統監控軟體的波形參數測量的演算法等，包括周期和頻率的演算法以及演算法模擬結果的比較; 4 .系統監控軟體對于鍵盤輸入的響應與處理（人機交互） ; 5 .系統監控軟體的文件存儲管理以及與硬體配合的部分軟體設計。
  11. This paper discusses several questions about imaging algorithms of sar. mainly it discusses three imaging algorithms - range - doppler algorithm, wavenumber domain algorithm and chirp scaling algorithm. still it discusses the assistant processing algorithms of imaging algorithms - doppler centroid estimation algorithms and autofocus algorithms

    本文論述了合成孔徑雷達（ sar ）成像演算法方面的一些問題，主要討論了三種成像演算法? ? - range - doppler演算法，波數域演算法及chirpscaling演算法，並討論了成像演算法的輔助處理演算法? ?中心頻率估計演算法及自聚焦演算法。
  12. A fast and accurate algorithm to estimate the frequency of a coherent pulse sinusoid is presented in chapter 3. it is based on the autocorrelation iterative method, and the simulation results show that for the lower snr, this algorithm can accord with the request of the soplat ’ s precision and less computational complexity. therefore, it ’ s a promising algorithm for practical application

    在對正弦脈沖信號的頻率估計中，第三章在總結、比較前人演算法的基礎上，選擇了基於自相關迭代的頻率精確估計演算法，並進行模擬分析，結果表明，該演算法在較低信噪比時，可以達到單站無源定位所要求的估計精度，且運算量小，具有廣闊的應用前景。
  13. The method, which only needs three real dft coefficients, is at low computation and of high precision and fast frequency estimation

    （ 4 ）基於dft理論和自相關理論，提出了結合fft和自相關的雙信號頻率估計演算法。
  14. An algorithm about calculating frequency of motor vehicle brake oil pressure

    一種計算汽車制動油壓波動頻率的演算法
  15. An algorithm for jointly estimating range, doa and frequency of near field source

    頻率及到達角聯合估計演算法
  16. Based on the analysis of solving ambiguity, the thesis presents several algorithms for estimating doa and an algorithm for estimating frequency by using methods of subspace parameter estimation under sub - nyquist spatio - temporal sampling condition

    論文在分析解模糊思想的基礎上，給出空時欠采樣下運用子空間類參數估計方法估計波達方向的幾種演算法和一種頻率估計演算法，並從性能上進行了比較和分析。
  17. Based on fourth - order cumulant, a computationally efficient method for joint estimating both directions of arrival and ranges of near field sources with known carrier frequency is firstly presented. the proposed algorithm need not any spectral peak searching and the 2 - d parameters are automatically paired. lt is suitable for arbitrary additive gaussian noise environment. in the following section, a 3 - d esprit method for jointly estimating of frequencies, doa ' s and ranges of multiple near - field sources with unknown carrier frequencies is proposed. the parameters estimation are given by the eigenvalues of different matrices. furthermore, its performances are confirmed by several computer simulations

    利用四階累積量，第五章首先給出了一種載頻已知的情況下基於近場源的距離和波達方向聯合估計演算法，通過構造的陣列輸出信號四階累量矩陣使空間信號到達方向和距離估計無需譜峰搜索，且參數自動配對，適合於任意高斯噪聲環境。進一步在第三節提出了一種載頻未知的情況下的多個近場窄帶信號源doa 、距離和頻率聯合估計的3 - desprit演算法。
  18. And key technologies of mc - cdma, channel estimations and diversity combinations, are mainly studied for the application of mc - cdma. the channel estimation based on pilot carriers is analyzed, and an improved method with wiener filtering is presented. simulations of the method are carried in time - varying multi - path channel

    本文分析了基於導頻的通道估計演算法，提出了採用維納濾波平滑的改進估計演算法，並在多徑時變通道下進行了計算機模擬，對系統各參數分別對通道估計誤差和誤碼率性能的影響做了詳細分析和比較，從而證明了演算法和改進的有效性。
  19. A algorithm of frequency estimation for tdm channel of inmarsat system

    通道中心頻率估計演算法
  20. And the implementations in fpga of each composition are also completed. the rapidly frequency estimation algorism in the short data condition are implemented in fpga to get the band position. pipeline has been used in this dissertation to advance the performance

    結合多相濾波下變頻結構、演算法對測頻精度及速度的要求，提出了短數據快速測頻演算法的具體實現，使用流水線的設計方法，提高了系統的數據吞吐率，在盡可能短的時間內提供多相濾波下變頻所需的載頻位置信息。
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