snr 中文意思是什麼

snr 解釋
SNR ＝supernova remnant 【天文學】超新星遺跡。

  1. The realization of quick acquest under very low snr and big frequency shift is one of the key problems of lpi radar. we designed a new receiver which needs less computation spend without any decline of the performance of the radar

    如何在較低輸入信噪比和較大頻偏的條件下實現擴頻碼快速捕獲是碼同步的難點，本文在不損失系統性能的基礎上，設計了一種結構簡單的接收機實現方案。
  2. The method is given to solve the problem in adaptive demodulation that adjudgement will worsen when the snr is low. by using the error signals to reduce the demodulated signals, the bit error rate will be improved

    模擬中，針對dpsk信號的自適應解調中小信噪比下門限失效的問題，提出了利用誤差改進門限判決的方法，將誤碼性能提高了1 2db 。
  3. Wright snr told bbc sport : " i am just so chuffed. it ' s been two - and - a - half years of trying to keep him going

    老賴特告訴《 bbc體育》 ： 「我太開心了。為了讓他繼續待在英格蘭國家隊，我們努力了2年半。 」
  4. The concept of irradiance signal - to - noise ratio ( snr ) on the target plane and the minimum of the irradiance that can be detected by the detector was taken as the beginning, combined with a thorough analysis of the spectrum radiating feature of the target and the sky background, the atmosphere conditions, spectral filtering and the influence that the various components in the system have on the target irradiance on the detector ' s target plane and the background irradiance snr, the equation of the flying bomb ' s effect range affected by the point of burst measuring system is made, and all related factors that have an impact on the effect range are analyzed as well

    從探測器靶面上輻照度信噪比的概念、探測器的可探測輻照度最小值出發，在詳細分析目標、天空背景的光譜輻射特性、大氣條件、光譜濾波技術以及系統各環節對探測器靶面上目標與背景輻照度信噪比的影響的基礎上，推導了炸點測量系統對爆炸的飛行彈體的作用距離方程，分析了影響作用距離的諸因素。
  5. The specific research methods are listed : 1. matched filter taking the max ouput snr as the best rule correlates nonstop divided signal and divided echo to detect low snr target signal. then all one dimension divided correlation outs and done fft in portrait to leach interferential signal such as static or low rate mussy meaves, many pathway echo and so on and to take target ' s time difference and doppler frequency that combine parameters that target ' s direction taken from antenna and so on to implement target ' s orientation and tracking

    具體研究方法如下： 1 、採用以輸出信噪比最大為準則的最佳匹配濾波器來對分段的參考和目標信號作相關處理來檢測低信噪比目標信號，然後對一維分段相關輸出組作縱向傅立葉變換來濾除靜態或低速的雜波、多徑回波等干擾信號，並提取目標的時差和多普勒頻率，再結合由天線獲得的目標方向等參數，就可以實現目標的定位和跟蹤。
  6. For micro - cavity semiconductor laser, station model is proposed in this paper and its steady - state and instantaneous characteristics when the coupling efficiency of spontaneous emission into a lasing mode is equal to 1 are analysised. for current noise, sp noise, noise, p noise, as well as current modulation, sp modulation, modulation and p modulation, using small - signal approximation, we derive the laser ' s corresponding transfer functions. and we calculate their signal - to - noise ratio ( snr ) gain in various parameters through frequency domain analysis in the premiss of large input snr

    本文對于微腔半導體激光器，提出站模型，能夠較直觀簡潔地分析微腔半導體激光器的穩態和瞬態特性，利用此模型對具有重要實用價值的= 1的微腔半導體激光器進行了討論；對于電流i噪聲、自發發射壽命_ （ sp ）噪聲、自發發射因子噪聲、光子壽命_ p噪聲，以及電流調制、 _ （ sp ）調制、調制、 _ p調制，在小信號近似下，得到了相應的激光器的傳遞函數；在大信噪比的前提下，對激光器進行了頻域分析，分別計算了它們在不同參數下的信噪比增益，分析了其抗噪聲性能。
  7. For applicants with highest edu. level of snr. high - school only

    最高學歷為高中畢業的申請人填寫！
  8. It has a signal - to - noise ratio ( snr ) of at least 75 db

    它有一個信號雜訊比（信噪比）的至少有75分貝。
  9. The measurement principle and methods about snr are emphasized

    著重介紹了信噪比的測試原理及測試方法。
  10. The software will display the snr, fwhm and rms values found

    軟體將顯示它們的信噪比，點擴展函數和均方差值。
  11. Study of simulation method to produce noisy signals with high snr accuracy

    一種生成高精度信噪比加噪信號的模擬方法研究
  12. Snr signal to noise ratio

    信號噪聲比
  13. Signal - to - noise ration ( snr ) is an important parameter of the image intensifier

    信噪比是像增強器的一個重要性能參數指標。
  14. When asked about the link with bayern munich, robben snr said : " nonsense

    當被問及與拜仁慕尼黑有聯系時，老魯本說： 「一派胡言。
  15. Snr estimation scheme and its application in doppler shift estimation in mobile communication systems

    寬帶移動衛星通信通道的研究
  16. Design of symmetric time - domain equalizers based on maximum shortening snr algorithm

    基於最大縮簡訊噪比演算法的對稱時域均衡器的設計
  17. It is an unfathomed and difficult problem that weak and small targets are detected in complicated background and low snr

    摘要復雜背景下低信噪比弱小目標的自動檢測是當今目標自動探測研究尚未解決的一個難題。
  18. Experimental results in different noises and snr indicated that this vad algorithm can divide speech segments from non - speech segments accurately and reduce voiced - unvoiced error obviously. ( 2 ) an improved dct - hn speech decomposition algorithm based on the harmonic - noise model is presented

    不同噪聲、信噪比下的實驗結果表明，該演算法可以準確區分語音段與非語音段，明顯降低了基音檢測中清濁誤判現象的發生; （ 2 ）基於「諧波-噪聲」模型提出了一種改進的dct - hn語音分解演算法。
  19. First, the energy would diffuse after multiple frames accumulation and bring agglomeration effect. second, the amount of calculation and storage level are huge when the snr is low, especially the number of accumulated frames is large. to solve the problems, two methods have been resorted

    但由於其本身存在著不足，一是多幀積累后能量擴散，產生團聚效應;二是在信噪比較低時，需要積累的軌跡很多，存儲量和計算量都較大，尤其是當積累幀數較多時。
  20. Based on an amplified spontaneous emission ( ase ) source, a ring - cavity fiber laser, in which sensor element acted as the reflector of the cavity, was achieved with high - signal noise ratio ( snr ) and high - power. it was demonstrated that the output power was maximum, when output coupler ratio of the coupler was seventy percent

    實驗證實耦合器的輸出耦合比選為某一個最佳值70 ，當980nm泵光工作電流為50ma時，其輸出功率達3 . 5mw ，且輸出激光波長與作為反射鏡的光纖光柵中心波長相同。
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