peak signal 中文意思是什麼

peak signal 解釋
峰值信號
  • peak : vi 1 瘦弱；消瘦，憔悴。2 減少，縮小 （out）。n 1 山峰，山頂；孤山。2 （胡須等的）尖兒；尖端。3 最...
  • 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. Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground

    針對存在的缺點，本文提出了一種應用於激光多普勒測速的高精度信號處理技術，即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜，搜索其譜峰值頻率，接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析，再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析，從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來，充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率，通過goertzel演算法獲得分析頻帶的高解析度頻譜，然後通過能量重心校正演算法對細化后的頻譜進行高精度校正，這樣不僅保證了演算法的高效性，而且大大提高了分析的精度。
  2. The columns and rows are constrained by each other. the simulations over binary symmetric channe ( lbsc ) and gilbert - elliott channel ( gec ) shows the performance is great improved, especially over burst error channel peak signal to noise ratio ( psnr ) is improved more. it is tried to be used in wireless communication system

    模擬結果表明，採用行列交替約束的約束維特比譯碼以後，性能得到較大的提升，尤其在突發錯誤通道中，傳輸的圖像經乘積編碼進行通道編碼與譯碼后峰值信噪比有明顯的提高。
  3. When the input noise is the single - peak gaussian noise, the noise can improve the signal correlation only for the sub - threshold signal, i. e. subthreshold stochastic resonance ( sr ) exists

    當輸入噪聲為單峰高斯噪聲時，輸入信號在閾下時噪聲才能改善信號的相關性，即隨機諧振現象存在。
  4. However, when the input noise is the double - peak gaussian mixture noise, the noise can improve the signal correlation for the subthreshold signal and the suprathreshold signal, i. e., both sr and suprathreshold stochastic resonance ( ssr ) often occurs

    而當輸入噪聲為雙峰高斯混合噪聲時，不僅輸入信號在閾下時隨機諧振現象有時存在，而且輸入信號在閾上時噪聲往往也能改善信號的相關性，即閾上隨機諧振現象存在。
  5. The retention tune of each of the three main peaks of the antibiotic fr - 008 is entirety identical to candicidin, except for one peak ( fr - 008d ), which can also be seen as a very weak signal on the hplc profile of candicidin with the same rt

    因此可以推測，這兩個菌株在表型上的差別有可能與鏈黴菌fr - 008中的線性質粒有直接的關系，但也不能排除染色體基因之間的差異。
  6. The controllable ability of valve timing, duration, and lift in the haecvvs has been proved. the map of common rail pressure, duration of control signal and the peak lift, the map of common rail pressure, duration of control signal and valve event duration, the map of the combination ability of valve event duration and valve peak lift etc. have been obtained from the experiment

    在研究了電控可變氣門系統氣門正時、氣門開啟持續期、氣門升程的可控性的基礎上，整理了共軌壓力、控制信號持續時間與氣門峰值升程的map圖，共軌壓力、控制信號與氣門開啟持續期的map圖，氣門升程與氣門開啟持續期配合范圍map圖。
  7. The system, based on 89c51, has two stages of sampling and holding circuits, which can discriminates positive - going edge and negative - going edge of signals, providing signal peak information

    如果以橫坐標為信號道址、縱坐標為道址對應的計數率，可以得到一條核輻射譜線。
  8. The impressive presence of table mountain （ over 1000 meters ）, flanked by the towering lions head, legendary devil ' s peak and historical signal hill, stands proudly above the city

    風景迤儷的桌山海拔一千多米，傲視著整個城市，它旁邊便是巍峨的獅子頭、神奇的魔鬼峰和歷史悠久的信號山。
  9. On the basis of relationship of the peak phases of the genes rhythms in different light regimes, it can be concluded that : ( 1 ) circadian expression of the clock gene varied with the appearence of light, namely the light signal, but not the light regime

    通過比較中樞與外周、全黑暗與不同光照-黑暗交替制中基因表達的峰值相位，發現： clock的晝夜節律性表達特徵與光照是否存在（即光信號）相關，但不受ld光制影響。
  10. Simulation results show that the ringing artifacts around the image are reduced, the main information is preserved, and the peak signal to noise ratio ( psnr ) is higher than the known methods

    模擬計算表明，該方法可有效抑制圖像邊界的振鈴效應並保護了圖像的重要信息，並且比現有的方法具有更高的峰值信噪比。
  11. Peak signal to noise ratio, psnr

    通過比較降噪前後的峰值信噪比
  12. Experiments are performed on monochrome and color image sequences, and performance is measured by the peak signal to noise ratio ( psnr )

    最後分別對單色和彩色圖像序列進行了實驗，利用峰值信噪比（ psnr ）來度量演算法的性能。
  13. Experiment results show that in low bit rate environment, the new image compression scheme performs better than jpeg in the aspects of perception and psnr ( peak signal noise ratio )

    實驗結果表明該演算法在低碼率下，相比jpeg ，獲得了在視覺效果和峰值信噪比方面更好的恢復圖像質量。
  14. On the other hand, image quality measures haven ’ t been improved correspondingly. the most popular image quality assessment ( iqa ) is still traditional methods whose representative is psnr ( peak signal - to - noise ratio )

    在對圖像質量要求愈來愈高的今天，傳統的圖像質量評價演算法已無法提供令人滿意的結果，成為圖像處理技術的薄弱環節。
  15. Based on adaptive quad - tree fractal image encoding scheme, the concept and algorithm of peak signal noise ratio ( psnr ) based on the fractal codes is put forward, and is used to match the similarities between images

    本文以自適應四叉樹分割的分形圖像編碼為基礎，提出了圖像的分形碼峰值信噪比的概念和演算法，在無須解碼的情況下，直接對分形碼來量化圖像間的相似性。
  16. In the final, we evaluated and analyzed the quality of a series of compressed images with the fuzzy image and psnr ( peak signal - to - noise ratio ) measurement. we have also made some other experiments such as add noise to the images and so on

    然後用峰值信噪比和本文提出的模糊圖像度量分別對一系列壓縮后的圖像質量進行評價，並且分析了它們的評價結果，最後還進行了對圖像添加各種噪聲等實驗。
  17. 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。
  18. In order to assess the performance of the proposed methods, we propose three types of image measures to quantify the performance compared to some other methods. the first type evaluates the fidelity of the reconstructed image by computing the peak signal - to - noise ratio and euclidean distance in cielab color space between the original and reconstructed image in smooth and edge regions respectively. the second type accounts for a major artifact ? zipper effect

    為了評估演算法質量，本文採用了三類評估手段:一是分別計算原始圖像與重構圖像在平滑區域與邊界區域的峰值信噪比與cielab顏色空間的歐氏距離來分析重構圖像的保真度;二是利用數學手段對重構圖像的一類主要失真現象? ? zipper效應進行定量評估;三是對硬體實現的成本與實際可行性進行了分析。
  19. 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。
  20. According to this, we propose a new way to renew the traditional method of subjective image quality evaluation, different to only use mse ( mean square error ) and psnr ( peak signal - to - noise ratio ) to evaluate merely on radiation distortion, and complemented quantitative description on compressed image distortion o it is significant to choose the format of video transferation and measuring precision calculation of tracking and measuring systems based on images

    中國科學院長春光機與物理研究所博士學位論文據此提出了不同於傳統的僅用均方誤差（ mse ）和峰值信噪比（ psnr ）來評價圖像灰度輻射畸變的新思路，補充了對壓縮圖像幾何畸變的定量描述。這對于基於圖像的測量跟蹤系統中數字圖像傳輸方式的選擇，以及評價壓縮解壓演算法對測量精度的影響有重要意義。
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