信噪比改善 的英文怎麼說

中文拼音 [xìnzàobǐgǎishàn]
信噪比改善 英文
signal-noise enhancement
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 改 : Ⅰ動詞1 （改變） change; transform 2 （修改） revise; alter; modify 3 （改正） rectify; correct 4 ...
  • 善 : Ⅰ形容詞1 （善良; 慈善） good 2 （良好） satisfactory; good 3 （友好; 和好） kind ; friendly 4 （...
  • 改善 : improve; ameliorate; perfect; better; mend; modify; improvement; perfection; melioration
  1. The use of suppression - conductometry showed the special features of lowering the background of the eluent, increasing the conductance of the detected ions and improving the s / n ratio

    採用抑制電導可以降低淋洗液的背景電導，又可以增加被測離子的電導值，改善信噪比。
  2. From the result we get the following conclusion : for narrow - band signal, the effect of the method based on fft is best. for wide - band signal, when snr is up to certain degree ( higher than - 7db or so ), the curves of square error of modified methods are more obvious and closer to crb. for an echo composed of more than one frequency or direction, space - frequency distribution could show more direct information of frequency and direction, which is more advantaged to make precise judge and estimation for doa of echo

    從估計結果發現，對于窄帶回波信號，基於fft的方法估計性能大大優于其他方法；對于寬帶回波信號，在信噪比達到一定程度（高於約- 7db ）時，補償后的幾種估計法的性能改善均比較明顯，誤差曲線越來越接近crb曲線；對于回波中存在多頻率多方位的情況，空間?頻率分布圖能提供較為直觀的頻率及方位信息，因此應用空間?頻率估計法來進行方位估計，更有利於進一步對回波的具體方位進行準確判斷和估計。
  3. Simulation experiments show that the pitch extracting results of the algorithm are superior to that of the conventional algorithms, overcoming the random errors and multiple or half frequency errors, especially robust at low snr

    模擬實驗表明，該演算法與傳統方法相比其基音檢測結果有明顯的改善，克服了隨機錯誤及倍頻、半頻錯誤，並且在低信噪比下魯棒性較好。
  4. This paper deduces the optimum threshold expression under certain cost rule and relationship between the number of pulse accumulation and the increased ratio of echo ' s snr

    本文推導了最佳門限電平的表達式和脈沖積累對回波信號信噪比的改善能力。
  5. The clues and techniques to improve the resolution of data processing are 1 ) removing the affection of near surface factors on data acquisition, including static correction and noise eliminating technique etc, 2 ) broadening the frequency band of pre - stack seismic data, including amplitude compensation and pre - stack deconvolution etc, 3 ) improving s / n ratio of high frequency and weak reflection signals through multiple coverage with high precision velocity analysis, residual static correction and high - order nmo, raising " dead line of high frequency reflection ", and 4 ) identifying post stack effective reflection frequency band, enhancing dominant frequency and so on

    主要包括：消除近地表因素對資料採集的影響，包括靜校正和噪音壓制技術等；疊前拓寬地震資料領帶，包括振幅補償和疊前反褶積技術等；藉助高精度速度分析、剩餘靜校正和高次項nmo技術，通過多次覆蓋疊加，消除資料中隨機噪聲干擾、提高資料信噪比，尤其是高頻端反射信息的信噪比，改善高頻反射和弱反射信號信噪比，提高「高頻反射死亡線」 ；疊後有限反射頗帶識別、抬高優勢頻率等。
  6. The key technique of telemetry digital diversity receiver is diversity technique, which combines independent multi - path signal or extremely irrelevant multi - path signal at less, and improves instant snr and average snr in receiver and enhances communication quality. there are many irrelevant multi - path signal in wireless

    遙測數字分集接收機一個重要關鍵是分集技術，分集技術是對獨立的或至少是高度不相關的多徑信號進行相加，從而改善接收端信號的瞬時信噪比和平均信噪比，提高通信質量。
  7. Under the condition of " comparatively weak correlation between the two noises involved, coherence function is used as a frequency domain amplification factor for improving snr of the output signal to the filter and the speech enhancement effect. meanwhile, a real - time recursive algorithm is put forward in substitute for current algorithms based on short time fourier transform. the new algorithm will simplify computations and will be suited for real - time implementation together with the adaptive systems

    接著針對上述nanc系統兩路輸入信號噪聲相關性弱的情況，用相干函數作頻域增益因子來提高輸出信噪比與改善語音增強效果，同時，通過一種實時迭代演算法解決了短時傅氏變換計算量大的問題，簡化了計算，便於實時處理與實際應用。
  8. The angular resolution is improved by a factor of 2 when signal - to - noise ratio equals to 15db. 3

    試驗結果表明，在15db的信噪比下，方位解析度的改善因子可以達到2 。
  9. It is used in conventional real aperture radar for improving angle resolution. numerical and experimental results show that by using awsm. the angular resolution is improved by a factor of 1. 8 when signal - to - noise ratio equals to 15db

    實驗結果表明，在15db的信噪比下，採用角度權重方位超分辨技術可以使方位解析度的改善因子達到1 . 8以上。
  10. Improved error and throughout performances of the proposed scheme can be achieved at low signal - to - noise ratios

    以一定復雜度的代價，換取該體制在低信噪比時通過率的改善。
  11. Some issues associated with the algorithm such as wavelet function selection, analysis level, and boundary treatment and so forth have been discussed. the stein self - adapting threshold denoising method is used to the signal pretreatment, thus the snr and resolution are improved

    採用基於stein無偏似然估計自適應閾值選擇原理的實用消噪方法對故障信號進行預處理，在改善信噪比的同時，又提高了對突變信息的解析度。
  12. Combined with the adaptive modulation and coding technology, this algorithm reallocates the residual power by effectively utilizing the discrete modulation orders according to the different priorities of sub - channels under the limitation of quality of service over the block fading channel

    在滿足服務質量要求的前提下充分利用星座圖尺寸的離散性，將殘余功率按照各子通道的不同優先級進行二次分配，並結合自適應調制編碼技術改善低信噪比時的系統吞吐量。
  13. Based on ica post processing matched filter multi - user detection lets the output of traditional matched filter to initialize the ica iterations, not only the known spread information of interesting user is used to overcome the uncertainness of ica, but also the character of statistical independence is used. the simulation results show that it advances the ability of traditional detector when the signal - noise - ratio is large. keywords code division multiple access ; independent component analysis ; channel estimation ; matched filter ; blind multi - user detection

    基於ica后處理的匹配濾波多用戶檢測是用傳統的檢測器的輸出來初始化ica的迭代，它不但充分利用多用戶信號的已知信息，克服了ica的不確定性問題，同時也充分利用了多用戶信號的統計獨立性，模擬實驗結果證明這種多用戶檢測演算法在高信噪的情況下，誤碼性能改善隨著信噪比的提高不斷增加。
  14. Secondly, we simulate the transmission process in computer, calculate the optical - signal - to - noise - ratio ( osnr ) of output signal with the same input signal filtered by the ofbg, matched filter and f - p filter, analyze the improvement of the osnr after filtered by them. we find it also has advantage over f - p filter. taking the two reasons into account, we believe that the weak ofbg is superior to the widely used f - p filter

    另外用計算機模擬計算了光信噪比的改善情況，研究發現：一個相同的噪聲信號經弱ofbg后的光信噪比較經過f - p濾波器后的光信噪比高，由此認為， ofbg用作光濾波器對接收端前置光放大器的噪聲進行濾波，比常用f - p光濾波器具有更大的優越性。
  15. The scientific method design and strict field construction make better exploration effects in 3d seismic data gathering of dongying city area, and it is shown that the resolution of mid - shallow layer data and the s / n in mid - deep layer data have been greatly improved from the single shot records and first stack profile

    通過科學的方法設計和嚴格的野外施工，使東營城區的三維採集取得了較好的勘探效果，從單炮資料和初疊加剖面來看，中淺層的解析度和中深層的信噪比都有了較大的改善。
  16. Simulation results show that both objective gains measured in psnr ( peak signal - to - noise ratio ) and visual improvements of reconstructed video can be achieved by utilizing introduced methods. chapter 5 gives the implementation of jvt - based nwarq technique

    實驗結果表明，各改進演算法能不同程度地提高和改善重建圖像的峰值信噪比（ psnr ）和主觀質量；第五章研究、實現並測試了基於jvt視頻編碼標準的無等待arq技術。
  17. The taboo - search algorithm and the ordinary genetic algorithm are combined in this paper and the new algorithm is named taboo - genetic algorithm. the new algorithm is applied into the matching search of domain and range in fractal image coding. the result shows that the coding time is decreased greatly when the compression ration and the peak signal and noise ration do not decline

    后來把禁忌搜索演算法與簡單遺傳演算法相結合，提出了一種新的禁忌搜索遺傳演算法，並應用於分形圖像壓縮編碼的定義域、值域匹配搜索，從而在不降低峰值信噪比和壓縮比的情況下極大地改善了分形圖像壓縮編碼的速度。
  18. A new method is presented in this thesis by which accumulates the energy to improve the signal - to - nosie ratio of input - signals, consequently improve the detection performance

    本文介紹一種通過積累能量新方法來改善輸入信號的信噪比從而改善檢測性能。
  19. Lifting scheme is being used to decomposition - reconstruction signal, noise is removed and the precise position of impact signal is keeped. the signal - noise rate is improved, the loss is low. the method is very easy, many fields can apply it

    用提升格式的小波分解重構演算法，對振動測試信號進行去噪處理，去除屬于噪聲的小波系數，保留屬于信號的部分，改善測試信號的信噪比，減少信號損失。
  20. The key point of the research is that, although the detection performance of sonar signal processing subsystem has been optimized, there is still a space of improvement which can be achieved by the means of display and post - processing

    本文的設計思想是在聲納信號處理系統的基礎上，通過聲納顯示技術和亮度調制信號的檢測技術，進一步提高信噪比，改善聲納檢測性能。
分享友人
分享到 Line

分享到臉書