high signal-noise ratio 中文意思是什麼

high signal-noise ratio 解釋
高信號噪聲比
  • high : adj 1 高的〈指物，形容人的身高用 tall〉；高處的；高地的。2 高級的，高等的，高位的，重要的。3 高尚...
  • 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...
  • noise : n 1 聲音，聲響。2 叫喊；嘈雜聲，噪音；喧鬧聲；吵鬧，騷動，騷擾。3 〈古語〉謠言，風聲。4 〈美國〉...
  • ratio : n. （pl. ratios）1. 比，比率，比值；比例；系數。2. 【經濟學】復本位制中金銀的法定比價。vt. 1. 用比例方式表達；求出…的比值；使…成比例。2. 將（相片）按比例放大或縮小。
  1. Area electronic buoys system is a large - scale underwater sound equipment of tracking and locating moving objects such as submarines, torpedoes and ships. with advanced vector sensors as detective devices, it has excellent antinoise performance, and its signal noise ratio is high

    區域電子浮標系統是一套大型的水聲跟蹤定位設備，其主要任務是準確跟蹤和定位海上多個運動目標（如潛艇、魚雷、船隻等）的運動軌跡。
  2. 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。
  3. The experiment result shows that the coding and decoding rates are high, and the signal to noise ratio, compression rate and visual quality are quite good

    實驗結果表明該方法編（解）碼速度快，並有較好的信噪比、壓縮比及視覺效果。
  4. One of which is based on the maximum signal - to - noise ratio ( msnr ) criterion, it can improve the performance of the array system only when the processing gain of the given cdma system is high enough such that the desired signal can become dominant after dispreading. the other is based on the maximum signal - to - interference - plus - noise ratio ( msinr ) criterion, and it has well performance when strong interferers occur

    一種是基於最大信噪比準則的演算法，該演算法適用於cdma系統的處理增益比較大，即解擴以後期望用戶信號遠大於干擾信號的情況；另一種是基於最大信干噪比準則的演算法，該演算法在強干擾存在的情況依然有較好的性能。
  5. All analysis and conclusions build on monopulse radar and high signal - to - noise ratio hypothesis

    所有結論及分析都是在高信噪比假設下針對單脈沖測角體制而言的。
  6. State of the art fiber optic components deliver high signal to noise ratio and long - term stability

    光纜聯接的光路保證了系統的柔和性以及高信噪比和長時間工作穩定性。
  7. This paper addresses the issue of detecting and tracking small moving targets in infrared ( ir ) image sequences, which is a hard work due to the high variability of target types and low signal - to - noise ratio

    現代海戰中，低空、超低空掠海導彈對艦船構成主要威脅。因此，對其實施有效防禦已成為各國海軍密切關注的重大課題。紅外目標的檢測跟蹤是艦船和岸基警戒系統的關鍵組成部分。
  8. To this paper we were carried tentatively on spectrum whitening in prestack, and each section after division scale is processed with spectrum whitening, particularly the composition of high frequency is raised apparently, the signal - noise ratio of high frequency raise. the resolution of whole section is better than stack

    本文還嘗試性地在疊前進行譜白化處理，對分尺度后的各個記錄分別進行譜白化，尤其是高頻成分提高得很明顯，有效地提高了高頻信噪比，整個剖面的解析度明顯增強。
  9. Doing the further research on the division frequency stack on the foundation of study of predecessor, at first the residual moveout correction is done to the seismic record, make the phase axle regularity, doing foundation for the same phase stack ; then carried on division scale processing by wavelet transform ; spectrum whitening is done to each scale, the high and low frequency band need to do prolongs, the middle frequency bands only increase the value of the frequency spectrum ; several kinds of methods that estimate the value of signal - noise ratio has been studied further, and summarize their advantage and disadvantage as well as the scope of application ; the seismic record after spectrum whitening is stacked by weighting with the value of the signal - noise ratio ; then estimate the value of signal - noise ratio which is each scale section after stacking, the scale that the signal - noise ratio is big is assigned big weighting, otherwise, the scale that signal - noise ratio value is small is assigned small weight ing, and carried on weighted reconstruct to each scale section

    本文在前人研究的基礎上，在分頻疊加方面做了進一步的研究。首先對地震記錄進行剩餘時差校正，校齊同相軸，為同相疊加做好基礎工作；然後對地震記錄用小波變換的方法進行分尺度處理；對各個尺度分別做譜白化，對于高、低頻段需要做頻帶延拓，中間頻段僅提升頻譜值；對于幾種信噪比定量估計的方法進行了深入的研究，並且總結了它們的優缺點以及適用范圍；對譜白化后的地震記錄用信噪比估計值作為加權系數進行加權疊加；對于各尺度的疊加剖面也進行信噪比估計，對于信噪比大的尺度給予大的加權系數，反之，信噪比值小的尺度給予小的加權系數，對各尺度疊加剖面進行加權重構。
  10. The directional routing protocol ds _ dsr put forward by the author is the improvement of the current protocol dsr, complete routine discovery and maintenance by directional neighbor nodes routing table, source routing and directional steering. the research discovers the application of the directional antenna, compare the omnidirectional antenna can increases the networks " total throughput, obviously reduces the co _ channel interference ( cci ), multiple access interference ( mai ), enlarges the nodes " signal and interference to noise ratio ( sinr ), and because of the high gain of directional antenna can realize the communication with farther distance and less jump, end to end delay can decrease deeply, simultaneously, security of networks can be improved partially, the node energy also can be saved easily by power control

    本文提出的定向路由協議ds _ dsr是基於對現有協議dsr的改進下實現的，通過定向鄰節點路由表、定向源路由和定向搜索來完成路由發現與維護。研究發現，定向天線的應用，相比全向天線可明顯提高網路的總的吞吐量，減少通道干擾、多址干擾，提高信干噪比，且由於定向天線的高增益可實現較遠距離、較少跳數的通信，減少了路由發現時間，這樣大大減小了傳輸時延，網路的整體性能得到了不同程度的提高，同時部分地解決安全問題，通過功率控制還可較容易的實現節能的目的。
  11. With the development of reducing noise technology and the advent of quieter targets, sonar faces up to the challenge of low signal - to - noise ratio detection while high detection performance is demanded by weapons ' s increasing range. moving target detection is two of first and last of sonar " four main tasks : detection, loacalization, classification and tracking / motion analysis of targets, which is the base of other two functions

    隨著降噪技術的發展，安靜型目標的出現，聲納技術面臨低信噪比的挑戰，武器射程的增加又對聲納提出了更高的要求，關繫到聲納的四大功能（檢測、定位、識別和跟蹤/目標運動分析）第一和第四個的運動目標檢測任務重大，因為它對其餘兩個起著基礎性的指導作用。
  12. The key to enhance the image quality is to separate the reflection that has high signal to noise ratio and the scope of stack can defined optimally by common - angle gathers

    提高成像質量的關鍵是分離出信噪比高的反射波並與根據共角度道集選擇最佳的疊加范圍層。
  13. We have imported some state - of - the - art equipments such as : high - frequency vibroseis and multi - level geophones for field data acquisition. by doing so, we have acquired high - quality seismic data with high sample rate, high signal to noise ratio and high frequency content

    在採集上，引進國外高頻可控震源，多級檢波器等主要設備，得到高采樣率、高信噪比、高解析度的高品質資料。
  14. In view of characteristics of seismic data of gobi - sand dune areas, this paper, through various data - processing means such as quality control, high - pass filltering, dip angle filltering, field static correction, surface consistency deconvolution, precise velocity analysis, denoising before stack, multiple iterative operation of residual static correction, denoising after stack and modification after shift, has raised the data quality of seismic profiles in low signal - to - noise ratio areas and managed to form the seismic data - processing technique for such complex areas as gobi, foreland and dune

    摘要針對戈壁、沙丘地區地震資料的特點，通過對原始資料進行質量控制、高通濾波、傾角濾波、野外靜校正、地表一致性反褶積、精細速度分析、疊前去噪、剩餘靜校正多次迭代、疊後去噪和偏後修飾等處理，提高了低信噪比地區地震剖面的資料質量，摸索出了一套戈壁、山前、沙丘等復雜地區地震資料處理技術。
  15. In the broadband incoherent beamspace high resolution method, the outputs of mvdr beamformers are used to suppress the interference from outside the beam coverage region in each subband. computer simulation results show good performance at low signal to noise ratio ( snr )

    該方法克服了基於預成恆定束寬波束輸出的寬帶相干高分辨處理方法不能有效抑制波束區域之外強于擾的不足，模擬結果表明該方法在低信噪比具有良好的性能c
  16. The double - frequency laser interferometer belongs to the heterodyne interferometer. it has been proved that this kind of interferometer possesses the advantage of having a higher transform gain, better wave - filter capacity and high spatial resolution. furthermore, this kind of interferometer can filter out background light interference and obtain a measuring signal with high signal / noise ratio

    雙頻激光干涉儀是一種外差干涉儀，理論分析證明：外差干涉具有高的轉換增益、良好的濾波性能及優異的空間鑒別能力，能有效地濾除各種背景光干擾，得到信噪比很高的測量信號。
  17. Dolby master studio : this is targeted at high level users and supports 8 - channel 7. 1 audio with a signal - to - noise ratio of at leas 95

    杜比大師工作室：這是針對高層次的用戶，並支持八聲道音頻7 . 1與信號雜訊比在租賃95 。
  18. Raman fiber amplifier （ rfa ） is a kind of optical amplifier that can amplify signal light directly through nonlinear interaction of high intensity pump and signal light in fiber. whereas the spectrum of raman gain coefficient of optical fiber is not flat, the gain of signal light with different wavelength induced by a single pump is rather different, when wavelength division multiplexing ( wdm ) signal light is amplified by a single pump, the gain spectrum of the wdm signal light is not flat. the flatness of the wdm signal light has important impact on the optical signal - to - noise ratio ( osnr )

    拉曼光纖放大器（ ramanfiberamplifier ，簡稱rfa ）利用高強度的泵浦光與信號光在光纖中的非線性相互作用實現信號光的直接放大，但是由於光纖的拉曼增益系數譜很不平坦，所以同一泵浦光源對不同波長信號光的增益就存在很大的差別，因此，用單泵浦光源來放大波分復用（ wavelengthdivisionmulti - plexing ，簡稱wdm ）信號光時，各信號光的增益值就有很大差異， wdm信號增益的平坦度對光信噪比（ opticalsignal - noiseratio ，簡稱osnr ）有重要影響。
  19. The principle of voltage controlled tracking filters is introduced and a new design method is presented, which can pick up exterior signals more accurately with high signal - to - noise ratio

    摘要介紹壓控式跟蹤濾波器的原理，並提出一種新的設計方法，較高精度地提取外部信號，信噪比高，同時將該方法運用在動平衡機檢測電路中。
  20. The technology of very low bit rate for hf ( high frequency ) communication means that, one technology of ecm ( electronic counter measures ) resistant communication is developed for low bit data message exchange in the time of battle which data communication is destroyed by electronic disturber. it is regarded by armies in the battle of information, because that it can overcome the very low snr ( signal noise ratio ), very high narrow - band interference and multipath with maxium delay of fifty millisecond

    短波最低限度通信技術是在戰時強電磁干擾情況下能實現保證最低限度的數據報通信的一種抗干擾通信技術。由於其能有效的克服極低信噪比、較強的窄帶干擾和幾十毫秒的多徑，在信息戰中受到各軍高度重視。
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