頻率平滑 的英文怎麼說
中文拼音 [bīnlǜpínggǔ]
頻率平滑
英文
frequency smoothing-
In addition, a low - pass filter can be employed prior to the digital - to - analog ( d / a ) stage to smooth the stairstep effect resulting from the combination of a low sampling rate and quantization
另外，在數模轉換（ d / a ）級前用低通濾波器可以平滑因低的抽樣頻率和量化造成的階梯效應。The classic approaches for fundamental frequencies smoothing, such as linear smoothing, median smoothing and linear interpolation, can not work well in the case of that fundamental frequency is not detected correctly and several continulus frames
傳統基音的平滑方法：線性平滑、中值平滑和一般的線性插值方法都不能很好地處理連續的基音頻率有隨機錯誤點的情況。We discussed the main characteristic parameters of seismic kinesiology and dynamics of mine engineering fracture zone, including relative amplitude, phase time of wave crest, similarity factor, principal frequency band energy, 3 - d space time gradient and coherent coefficient et al., and puts forward the processing method of 3 - d seismic characteristic parameters about denoise - smoothing, generalization, correlation analysis, characteristic transformation ; and presents the method of pattern recognition of mine engineering fracture zone
摘要本文從時間域、頻率域、三維空間域介紹了礦山工程裂隙破碎帶主要的地震運動學、動力學屬性參數，包括相對振幅、波峰相位時間、相似系數、主頻帶能量、二維空間時間梯度和相干系數等，提出了礦山工程裂隙破碎帶三維地震屬性的去噪平滑、歸一化、相關分析、特徵變換的處理方法以及裂隙破碎帶的模式識別原理與方法，並用實例說明了該方法的應用效果。( 三 ) under the dynamic load of the explosion, the numeric analysis has been done and achieve the rule as follow : ( 1 ) when the frequency of vibration is 0. 3hz, the acceleration of the slopes top gets the maximum ; so 0. 3hz is believed the natural frequency of the slope as a whole ; ( 2 ) the vibration of explosion can been magnified because of the condition of the landform, when the relative altitude is up to 45m, the acceleration of horizon gets the maximum ; when the relative altitude is up to 100m, the absolute value of acceleration and the deformation of horizon is larger than that in the bottom of the slope ; ( 3 ) in the period of forced vibration, at the top of the slope, the acceleration of horizon become larger and larger ; at the middle part of the slope, it becomes smaller ; ( 4 ) when the explosion velocity of is much little, the shallow part destruction is the primary deformation of the slope
（三）採用模態疊加法針對爆破動力作用，進行邊坡的動力響應分析，得出了以下結論： （ 1 ）振動頻率為0 . 3hz時，坡面頂部水平向加速度峰值最大；綜合考慮，可認為該邊坡的自振頻率為0 . 3hz左右； （ 2 ）地形對爆破地振動存在放大作用，研究剖面的坡面，水平向加速度及位移在地形相對高差45米左右最大，而後隨相對高差的增高而減小，相對高差為100米時，水平向位移及加速度絕對值均大於坡腳； （ 3 ）強迫振動段，水平向加速度值隨時間變化的規律為：坡頂節點總的變化趨勢是越來越大，而坡體中部節點的變化趨勢是越來越小； （ 4 ）當爆破振速較小時，變形破壞的形式表現為坡頂表面滑塌型。Some valuable conclusions are summarized by theoretical analysis and simulation experiments : from the side of signal processing, pulse jamming can be deleted by the method of time - domain sliding window accumulation and can be restored by interpolative prediction. ; gauss white nose can be attenuated while jamming disperse point - target by the method of time - frequency analysis in time - frequency domain. ; radio frequency noise jamming can be deleted by the method of average range frequency spectrum and notching in frequency domain
通過大量的理論分析和模擬實驗，得到了一批具有一定價值的結論：從信號處理的角度出發，對于脈沖式干擾，能夠運用時域滑動窗口積累的方法去掉，並且通過預測插值得到較好的恢復；對于高斯白噪聲干擾，在時頻變換域內應用時頻分析方法可減小其對分散點目標的干擾；對于射頻噪聲，通過平均距離頻頻法和頻域陷波的方法可以去掉；從改變合成孔徑雷達系統角度出發，類似雙基地雷達能夠避免各種干擾，對發射信號進行調幅，調相以及改變調頻斜率都是較好的抗干擾方法。To solve these issues, a new idea i. e. co - frequency transmission technique is proposed. it can not only realize the smooth transition from 2g to 3g but also optimize spectrum efficiency and expand system capacity to accommodate more users in major metropolitan markets
本文的同頻傳輸技術就是為了解決上述問題而提出來的一種全新的技術構想，它不僅可以實現由第二代系統向第三代系統的平滑過渡，而且可以更有效地利用現有的頻譜資源，解決現階段嚴重的頻率資源不足問題。And key technologies of mc - cdma, channel estimations and diversity combinations, are mainly studied for the application of mc - cdma. the channel estimation based on pilot carriers is analyzed, and an improved method with wiener filtering is presented. simulations of the method are carried in time - varying multi - path channel
本文分析了基於導頻的通道估計演算法，提出了採用維納濾波平滑的改進估計演算法，並在多徑時變通道下進行了計算機模擬，對系統各參數分別對通道估計誤差和誤碼率性能的影響做了詳細分析和比較，從而證明了演算法和改進的有效性。With the aid of these blocks, it is convenient and flexible to make up different kind of automatic - controlled simulating system and so to accomplish different kind of automatic adjusting task. this paper is focused on the construction of the simulation model of ccs by using the contrived control section model. the ccs employs advanced direct energy balance control strategy and can simulate different running patterns such as turbine following boiler pattern, boiler following boiler pattern, etc. two independent control loops : power control and frequency control, are used in the contrivance of deh and they are separately corresponding to the normal condition and the abnormal condition
本文利用開發的控制環節模塊，著重建立了協調控制系統的模擬模型，該協調控制系統採用了先進的直接能量平衡控制策略，並能模擬機跟爐、爐跟機、機爐協調、手動以及定壓和滑壓等運行方式；開發的功頻電液系統模型採用了功率控制和頻率控制兩個獨立的控制迴路，能夠在機組正常運行和啟停時對汽輪機進行控制。In order to conquer the shortcoming of general pwm forcibly switch technology, it takes advanced soft switch technology to recede the switch spoilage of power component and will be benefit to improve the frequency of switch electroplating power and raise the control precision and smooth of the output voltage and current of the electroplating power. it designs a digital software electroplating power that bases on the 80c196mc and epld ( erasable programmable logic device )
為了克服常規pwm硬開關控制技術的缺陷，本文採用先進的軟開關技術，大大降低了功率開關器件的開關損耗，提高了電鍍電源的開關頻率，改善了輸出電源電壓和電流的平滑性與控制精度，採用基於80c196mc單片機與可擦除可編程邏輯器件epld組成的全數字化控制系統，研製了一臺軟開關電鍍電源。The double - buffer technology saves memory resource, enhances memory efficiency ; the data - pulled technology improves the server ' s efficiency and performance, guarantees the video file to playback smoothly ; mpeg - 1 ensures the system ' s usability and feasibility ; directshow ensures the audio and video playback correctly ; the rtp / rtcp deals better with the system ' s real time. the pl vod system works normally on all sorts of mpeg - 1 streams
雙緩沖區技術節省了內存資源，提高了內存使用率；客戶端拉技術提高了服務器的效率與性能，保證了節目文件的平滑回放； mpeg - 1多媒體壓縮標準保證了系統的通用性和可行性； directshowcom組件技術保證了音頻流與視頻流能夠正確回放； rtp rtcp協議較好地處理系統的實時特性。To support smooth quality reconstruction under multiple rate constraints of transmission, it ’ s important to obtain the actual rate - distortion ( r - d ) function or distortion - rate function of each enhancement layer ( el ) frame
為了能夠在不同的傳輸碼率下平滑重建fgs目標視頻流，基於幀的fgs增強層率失真函數的獲取是一個非常關鍵的問題。2 a mathematical model of the reflected signal based on the frequency modulation continuous wave ( fmcw ) radar, solving the frequency - azimuth estimation of coherent signals by spatial smoothing technology, comparing the resolution of the object based on two - dim music method and that based on two - dim fft
2討論了在接收dbf條件下，回波信號的二維譜估計技術。建立了基於調頻連續波體制雷達下回波信號的數學模型，並將空間平滑技術推廣到時-空二維譜估計，解決了相干信號源的頻率-方位估計問題。分享友人