無噪聲信號 的英文怎麼說

中文拼音 [wúzàoshēngxìnháo]
無噪聲信號 英文
noise-free signal
  • 無 : 無Ⅰ動詞（沒有） not have; there is not; be without Ⅱ名詞1 （沒有） nothing; nil 2 （姓氏） a surn...
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  1. Compared with traditional mechanical and optic gyros, hrg has such advantages as no high speed circumvolving or moving parts in structure, no warm - up time and short start - up time, wide signal band in frequency, low excursion noises, great endurance in over loading, nuclear radiation and short time power off, small bulk, light weight, low power cost and long life, which is suitable for space applications

    與傳統的機械陀螺和光學陀螺相比，半球諧振陀螺具有如下優勢:結構上無高速轉子、無活動部件;不需預熱，啟動時間短;信號頻帶寬，漂移噪聲低;能承受大的機動過載;抗核輻射，並可經受短時間電源中斷的影響;體積小，重量輕，功耗低，壽命長，非常適合空間應用。
  2. There is no water flow around the sample. you can work in a dry environment. annoying noises and blocked filters are things of the past

    無水測試環境，避免了因水帶來的信號噪聲，而且不會堵塞過慮裝置。
  3. According to the characteristics of pipeline leak signals that the influence degrees of burst interference noises are various in each local area, this paper optimizes the uniform quantization to be adaptable, and proposes an adaptive quantization

    根據管道泄漏信號局部區域受到突發干擾噪聲影響程度的不同，本文進一步優化均勻量化器，將其改進為自適應量化器，提出了基於突發干擾噪聲的自適應量化近無損壓縮演算法。
  4. Because of the using of interpolation, noise shaping and switching amplification in the digital audio amplifier technology, the power supply modulator is not only much efficient but also behaving good in envelope amplification, this advantage is hard to implemented with conventional technology

    數字音頻功放技術是近年發展起來的高效率音頻放大技術，該放大技術採用了過取樣、噪聲整形等數字音頻處理演算法和開關功率放大。採用該技術實現的電源調制器不但具備很高的效率，而且能高指標地放大包絡信號，是常規的電源調制技術無法實現的。
  5. Frequency response, quantization noise, reconstruction error and its sensitivity to mismatch among adcs are studied at length in prqmf banks adc system, and the theoretic results include : ( 1 ) the distortion / aliasing functions of hybrid filter banks adc system is similar with that of switch capacitor filter banks adc system ; ( 2 ) for wide or narrow band input signal, the effective resolution of the two adc systems is 0. 51og2m bits higher than their adc ; ( 3 ) reconstruction error ' s sensitivity to mismatch among adcs of the two adc systems is reduced effectively than time interleaved adc system

    2對prqmf濾波器組adc系統的頻響、量化噪聲特性、重建誤差特性以及重建誤差對adc間的失配敏感性進行了理論分析研究，所得到的理論結果為： （ 1 ）混合濾波器組adc系統與開關電容濾波器組adc系統的失真/混迭函數一致； （ 2 ）無論輸入寬帶還是窄帶信號，這兩種adc系統的有效解析度均比其adc提高了0 . 5log _ 2m比特； （ 3 ）這兩種adc系統的重建誤差對其adc間的失配敏感性均明顯低於時間交織adc系統。
  6. In this paper a multi - passage controlling tactic composed of infinity impulse filter is presented to solve the problem in theory, but actual effect must be verified by experiment in future

    文章嘗試採用由無限脈沖濾波器組成的多通道控制策略，從理論上解決源噪聲信號採集問題，其實質效果還有待於後續實驗驗證。
  7. In order to measure the characteristics of such semiconductor optical amplifier, we adopted a set of measurement system. this measurement system can be used to measure the characteristics of all kinds of active or inactive optical passive components. such device presents good polarization insensitivity ( < 0. 9db ), wide 3db bandwidth ( > 33nm ) at 0 - 200ma and different input signal light wavelength and power, the maximum fiber - to - fiber gain of 10db, lossless operation current of 50 - 75ma for different input signal light wavelength and power, large extinction ratio ( > 50db ) and lower noise figure ( nf ) ( < 8db )

    與張瑞英博士一起，首次利用該種有源區結構制備出偏振不靈敏半導體光放大器，並在0 - 200ma注入電流范圍內獲得33nm的3db帶寬，在不同信號波長，不同信號功率0 - 200ma的注入電流范圍內，偏振相關損耗均《 0 . 9db ，在耦合差損為7db / facet的條件下，最大fiber - to - fiher增益達10db ，無損操作電流為50 - 70ma ，消光比達50db以上，而噪聲指數則低於8db ，最小可達4 . 6db 。
  8. Method psychophysical experiments were carried out using both single stimulus method based on random - gradient method and one - interval - forced - choice method

    方法實驗中選擇人的手指光滑無毛處作為感受部位，並且對此部位施加慢變的方波電信號和一定范圍的電噪聲。
  9. The signal / data obtained by measurement or observation usually contain two parts : one part is useful which has a direct or indirect relation to the research object, called information. and the other part is interferential has no relation to the research object, called noise

    通過測量或觀測所獲得信號或數據通常包含兩個部分：其一是與所研究的對象存在直接或間接關系的有用部分，稱為信息；另一部分是與所研究的對象無關的干撓部分，稱為噪聲。
  10. The problem of doa ' s estimation of multiple source signals incident on a arbitrary array in the presence of both unknown spatially correlated noise and sensor errors is firstly considered. a modified ml estimation of doa ' s and sensor gain errors is presented. unlike previous work, the proposed method does not impose any structure constraints or parameterization of the signal and noise covariances. the algorithm can be carried out via the alternating projection approach. finally, the performance of the proposed method is shown with computer simulations as well as real array data

    在空間相關色噪聲環境及存在陣列模型誤差情況下，首先給出了基於最大似然的doa及陣列幅相誤差聯合估計演算法，該演算法對信號和噪聲無任何約束，且適用於任意陣列結構。演算法可以利用交替投影迭代搜索實現，計算機模擬實驗和外場實測數據表明，本章演算法能給出比傳統的最大似然方法更高的估計性能。
  11. Research on cmos implementation of wlan transceiver rf front - end is done in this thesis. the transceiver uses the most used super - heterodyne architecture, its rf front - end consists of low noise amplifier, down - converter, up - converter, preamplifier, lo buffer and pll frequency synthesizer

    本論文研究無線局域網收發機射頻前端的cmos實現，該收發機採用超外差式的拓撲結構，其射頻前端主要由低噪聲放大器、下變頻器、上變頻器、末前級、本地振蕩信號緩沖器和鎖相環型頻率合成器等模塊組成。
  12. The radio surveillance digital system can identify the modulation format and parameters by data acquisition and signal processing in the complicated signal environments with noise

    無線電監測調制識別系統能夠在復雜環境和噪聲干擾情況下對信號採集和處理確定信號各種參數，解調信號，從中獲取信息。
  13. This error - based detecting method is improved, that is, predicting the chaotic noise is changed to estimating the chaotic noise. a predicting method is improved to an estimating method to estimate the chaotic noise. then the time used to train the parameters is saved, and no invalid detection will be gotten even if signals come into

    4 、改進了誤差檢測方法，即，將預測混沌噪聲改為估計混沌噪聲，並改進了一種非線性預測演算法，將其用於估計混沌噪聲，省去了參數訓練的時間，避免了參數尚未訓練好時就有信號進入背景噪聲中，而使檢測無效的情況。
  14. In the absence of signals, there is a transition phenomenon hi the firing rate which is only occurred under condition of the coupling between each neuron units, and there are two regions in the transition diagram of noise intensity and coupling strength plane : one is the non - sensitive to both noise intensity and coupling strength region, the other is the sensitive one

    發現了由於耦合的存在，增大噪聲強度會導致相變。同時進一步研究了在無信號輸人的情況下，神經系統的激發率隨噪聲強度和耦合強度的變化，發現了在一定的噪聲強度的作用下，神經系統的激發率到達一個峰值，即存在「同步共振」的現象。
  15. To solve the problems of that real aanc systems ca n ' t get the good reference signals in some situation and the acoustic feedback problems. in this m. s. thesis, adaptive feedback is explored theatrically and experimentally

    為解決實際有源噪聲控制系統常常無法獲得參考信號，以及次級聲反饋的問題，有源反饋控制系統研究是非常急需和重要的。
  16. We study holevo capacity of a single mode squeezed channel, derive the main formulus for computing the capacity. the result suggests that in many case the capacity is achived when the input is a squeezed state

    對熱噪聲通道，表明了容量在輸入信號為熱噪聲信號時達到，壓縮態無助於達到通道容量；而對于壓縮通道，容量一般在輸入壓縮態時達到。
  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. Abstract : the threshold algorithm of the target detection is often used to detect target echo signals. its performance is based on signals - noise ratio. when signals - noise ratio is great than 6. 7, the target can be detected. in order to increase the signals - noise ratio, matching filter is often used. if the system is narrow band system, the noise is color noise and matching filter cannot be used. therefore, the signals - noise ratio cannot be increased. however, the geometrical characteristic of the laser echo signal is different with the noise. this paper advises the algorithm that detects the target by the geometrical characteristic. when signals - noise ratio is great than 2, this algorithm can detect target. this algorithm has been used in practice

    文摘:目標檢測的閾值法經常用於檢測目標的回波信號.它的性能取決于信噪比，當信噪比大於6 . 7時，能夠檢測出目標.為了提高信噪比，經常採用匹配濾波器.如果系統是窄帶系統，噪聲為色噪聲，無法使用匹配濾波器，不能提高信噪比.激光回波信號的幾何特徵不同於噪聲.提出了一種利用這種幾何特徵檢測目標的演算法.當信噪比大於2時，該演算法能夠檢測出目標.該演算法已經實際應用
  19. The signal - to - noise ratio of the nondestructive testing system employing optical heterodyne and ultrasonic techniques is analyzed and calculated from two aspects including phase matching of optical heterodyne measurement in nondestructive testing and the effects of beam incidence on the intensity of heterodyne signal and signal beam

    對光外差超聲無損探傷系統的信噪比從兩個方面入手進行了計算分析:第一，光外差測量在無損探傷中的相位匹配;第二，光束入射角對信號光光強和外差信號強度的影響。
  20. The a / d transformation function of pc sound card is used to gather noise signal. wavelet packet filtering algorithm is used to eliminate the noise that is independent of the frequency of rotating and pick up the real vibration

    利用計算機聲卡的a / d轉換功能來採集電動機的噪聲信號，應用小波包濾波方法消除與回轉頻率無關的噪聲干擾，提取與轉速直接相關的振動信號。
分享友人
分享到 Line

分享到臉書