脈沖型噪聲 的英文怎麼說

中文拼音 [màichōngxíngzàoshēng]
脈沖型噪聲 英文
impulse type noise
  • 脈 : 脈名詞1. （動脈和靜脈的統稱） arteries and veins2. （脈搏的簡稱） pulse 3. （像血管的組織; 連貫成系統的東西） vein
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  1. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上，本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型，並對它們進行了分析和模擬；第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件；第四章針對傳統擴展卡爾曼（ ekf ）方法的缺點，提出了一種修正協方差的擴展卡爾曼濾波（ mvefk ）方法，並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較；第五章通過引入雷達機動目標跟蹤方法和模型，提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法；第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究，提出了幾種高精度測量脈沖序列多普勒頻率變化率的方法。
  2. It ' s high - frequence noise absorption, absorption of noise caused by rapid rise of front and self - reset function have widespread application in imput of supply, for absorption of inductive load switching surge voltage and for protection of two - way thyristor switching device, bypass capacitors, micro - machines and the others

    它所具有的吸收高頻噪聲、前沿快脈沖上升噪聲及自復位功能，使其在電源輸入端、吸收電感性負載開關浪涌電壓、保護雙向可控開關器件、旁路電容器、微型電機等方面有著廣泛的用途。
  3. The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided

    論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。
  4. First, this paper research and analyze the feature of signal of pulse doppler radar, and the mathematic model of radar is constructed. the several interference methods that narrow - band suppressing interference, range deception interference and velocity deception interference are discussed. and interference ability is evaluated and simulated

    研究和分析脈沖多普勒雷達信號特徵，建立了該種雷達的數學模型，並討論對脈沖多普勒雷達的窄帶噪聲壓制式干擾、距離欺騙干擾、速度欺騙干擾等幾種干擾樣式，並進行干擾性能評估和模擬研究。
  5. Transmission character of pulse - shaped noise in insulation monitoring for turbo - generators

    汽輪發電機絕緣監測中脈沖型噪聲的傳播特性
  6. According to the distribution of local impulse noise, an adaptive chord deviation method is used to avoid redundant detection or missing of impulse noise at the quick rising, descending or broken line area of data set

    摘要針對現有脈沖噪聲濾波演算法在處理大斜率區域和斷線型激光掃描數據中存在的多判和漏判問題，提出了一種有效檢測脈沖噪聲的方法。
  7. This paper designs a measurement system and measures the main properties of power line practically. the characteristics of power line are analyzed in detail, and a power line channel model is presented which consists of the parametric transfer function model and the simulating model of background noise, narrow noise and impulse noise. simultaneously the simulating method on the computer is presented

    本文設計了一個測量系統對實際電力線通道的主要特性進行了測量，詳細分析了電力線的信號傳輸特性和噪聲特性，給出了一個實用的室內電力線通道模型，包括參數化的傳輸函數模型以及背景噪聲、窄帶噪聲和脈沖噪聲的近似模型，並給出了計算機模擬實現方法。
  8. Abstract : a noise model for the analog correlator used in the ultra wideband receivers is proposed due to lack of simulation capability on noise performance of the correlator in current eda tools. the analog correlator circuit is divided into several parts to calculate the equivalent noise sources respectively. the ideal impulse generators, instead of the noise sources, are then applied to obtain the time varying transfer functions. fourier transforms are carried out to explore the relationship between the noise input and output in frequency domain for each part. then the symmetrical noise sources are grouped together and the periodicity of the circuit is utilized to further simplify the model. this model can be used to evaluate noise performance of the correlator

    文摘:給出了分析模擬相關器的噪聲模型.將相關器分成不同的幾個子模塊后，對各模塊分別計算等效噪聲源.然後用理想脈沖源代替噪聲源計算電路的時變傳輸函數，接著用傅里葉變換計算輸入輸出的頻域關系.利用電路的對稱結構合併對稱的子模塊可以進一步簡化模型.該模型可以用來估計相關器的噪聲性能
  9. Then we analyze the static character of sbs to obtain the sbs gain factor and threshold under continuous wave and pulse. because there is no stokes seed in fiber hydrophone system, we analyze the sbs based on the noise initiation of sbs model. we use the finite differential time domain method to do the sbs numerical simulation in fiber

    由於光纖水聽器中的sbs是在沒有種子光注入下產生的，於是我們推導了噪聲激發模型下描述sbs的耦合波方程組，對該方程組使用時域有限差分法進行了數值模擬，並推導了連續光和脈沖光下的閾值。
  10. With the small - sized disk saw machine as the research object, and through the analysis of the main sound source and action force of the small - sized disk saw machine, it indicates that the main cutting noise is produced by the local high - frequency pulse vibration of saw blades and workpiece

    以小型圓盤鋸機為研究對象，通過對鋸切過程中主要聲源及受力分析，明確了主要鋸切噪聲是由鋸齒高頻脈沖激勵引起鋸片和工件的局部高頻脈沖振動所產生的。
  11. To assist with weak reflections and mitigating the effects of loop noise, typically a train of impulses is used and the reflections averaged

    為了輔助微弱的反射波和減輕環路噪聲的影響，典型的做法是採用一列脈沖並對反射脈沖做平均。
  12. To improve the robustness of the algorithm, we propose a new method to control the local watermarking strength and develop a weighting process of watermark detection. compared with other well - known 3d model watermarking algorithm, our algorithm has following advantages : ( 1 ) it is able distribute information corresponds to a bit of the watermark over the entire model ; ( 2 ) its method to control the local watermarking strength is more better than other ones ; and ( 3 ) its weighting process of the watermark detection improves its robustness against a variety of attacks

    與目前國內外流行的三維模型水印演算法相比，我們的三維模型水印演算法具有以下優點： （ 1 ）每1比特水印信息在三維模型西北工業大學博士論文中的分佈更廣；我們提出的水印局部嵌入強度控制方法比其它水印局部嵌入強度控制方法更合理，適用范圍更廣泛，沒有病態情況存在；門）我們提出的雙脈沖加權水印檢測技術有效地降低了噪聲對水印檢測的影響，而其它的三維模型水印演算法都沒有考慮如何根據局部snr對水印的嵌入對象進行加權處理以減少噪聲對檢測水印的影響。
  13. It is based on a set of practical data in some area. the nonlinear least - square method is used to work out the parameters of the mobile communication channels " model, and then the error sequence comes into being. the noise ' s model of automobile that can reflect the random characteristics of the noise is also founded

    本論文採用簡單分群的markov二狀態模型建立移動通道概率統計模型，從某一移動通道實測曲線出發，利用非線性最小二乘法得出狀態模型參數，從而獲得移動通道的差錯序列；本文對汽車噪聲的產生以及它對信號的影響進行了詳細的分析，提出了汽車噪聲模型；並且採用尖脈沖模擬汽車點火噪聲脈沖，實現了噪聲對信號的隨機干擾，形象地反映了移動通道中信號的疊加過程。
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