頻率再用 的英文怎麼說
中文拼音 [bīnlǜzàiyòng]
頻率再用
英文
frequency reuse-
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。Third, according to an example, the influence on soil displacement stress etc under harmonic vibration load induced by infiltration coefficient and loads frequency variation is studied numerically in dissertation. finally, the difference of layered saturated soils consolidation between rectangle and harmonic vibration loads is studied in this dissertation
再次，以數值方法研究了簡諧荷載作用下成層飽和地基二維biot固結的一般規律，同時還研究了固結情況受滲透系數，頻率等參數影響的規律。If we again increase the frequency, we come into the range that is used for fm and tv.
假如再提高頻率，那麼就進入調頻廣播和電視所用的波段。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。It is very lightly used, and after february, 1999, ship stations and shore stations will no longer be required to monitor this frequency for calls
它非常輕微被使用，並且在1999年以後2月，船駐地和岸駐地不再將必需監測這個頻率打電話。In the former, two computing modes of fem are built, aimed at the coupling of variable - profile pylon, curved - axis arch and flexible cable. the software algor feas is used to get the results of dynamic numerical analysis, such as natural vibration frequency, vibration mode, dynamic displacement, dynamic stress, which are compared with the results of shaking table test research to draw to important conclusions. these conclusions provide not only potent basis for the design and construction of nanjing century tower, but also reference for other pylon - cable - arch structures similar to the project
在動態數值分析中，針對世紀塔變截面的塔身，曲線軸線的拱以及柔性拉索相互耦合時清況，建立兩種有限元計算模式，利用有限元軟體algorfeas得到動力數值分析的結果，如：自振頻率、振型、動位移、動應力等等，再和振動臺試驗研究成果作比較，得到一些重要的結論，從而為南京世紀塔工程的設計和施工提供強有力的依據，而且為類以於世紀塔工程的其它塔-索-拱結構的設計也提供一定的參考。In this paper, several scheme of vscf is compared firstly, of which gets doubly - fed generating mode. doubly - fed vscf wind power generating system uses a doubly - fed induction generator, which rotate speed can be able to change with wind turbine, and it ensures a constant - frequency output, by controlling the frequency of current input into rotor windings. in vector trans control system, the control of stator active power and the control of stator reactive power can be essentially decoupled, and the former is via torque component and the latter is via exciting component of stator current
本文首先比較了幾種變速恆頻方案，從中選擇了雙饋式變速恆頻方案；它運用雙饋電機的工作原理，允許發電機轉速變化，而在電機轉子側接入低頻勵磁電流，通過控制該電流的頻率，保證雙饋電機定子輸出的頻率恆定；再結合矢量控制技術，通過調節轉子電流來控制定子電流的轉矩分量和勵磁分量，相應獨立地控制發電機輸出的有功功率和無功功率。To avoid the serious electromagnetic interferer, the analog signals are transformed to frequency pulses which are transferred to the kernel of the system. in the measure of the groove voltage, the method of float - ground is adopted to avoid the high common signal and the range switch circuit is designed to solve the conflict of the wide dynamic range and the high precision. least square curvefit is adopted to reduce the system error
鋁電解生產現場電磁干擾非常嚴重，為此我們將需要測量的模擬信號就近轉換為頻率脈沖后再傳送到控制核心；採用浮地接入方式消除槽電壓信號中的共模成分；設計了量程自動切換電路以解決槽電壓的動態范圍寬和測量精度高的矛盾；用最小二乘法進行曲線擬和以降低測量的系統誤差。Data used in this work are north pacific ssta, 160 stations precipitation of china, and ncep reanalysis data. main results are as follow : ( 1 ) it is found that a apparent transition of north pacific ssta in later 1970 ' s : eastern and middle - equatorial pacific ssta turns from cold to warm with area extending, and mid - latitude pacific ( west wind drift zone ) turns from warm to cold. during this transition of ssta, different characters also appear in el nino and la nina : before 1976, la nina happens more frequently, and its duration is longer, el nino zone develops from negative ssta in the early stage ; after 1976, el nino happens a little bit frequent and longer with more intensity than before, el nino zone develops from positive ssta in the early stage ; the course of ssta variation has an enso cycle of 2 - 6 years, annual oscillation of 8 - 9 years, and decadal variation of about 22 years
本文採用1950 - 1999年北太平洋海表溫度（ sst ） 、中國160站夏季降水和ncep再分析的歐亞500hpa高度場等資料，利用eof 、 svd 、小波分析、合成分析和相關分析等方法，在分析北太平洋海溫時空分佈特徵的基礎上，著重探討了海溫異常及其年代際變化對我國東部降水的影響，並對降水、高度場和海溫三者之間的關系進行了分析，以試圖尋找三者異常之間可能的聯系，主要結論如下： （ 1 ） 1976年前後，北太平洋海溫經歷了一次明顯的轉變，赤道中、東太平洋厄爾尼諾海區由冷轉暖，暖水范圍增大，中緯度西風漂流區海溫由暖轉冷；在這樣的年代際背景下，厄爾尼諾、拉尼娜事件在不同的時期也有不同的特徵：在76年前，拉尼娜事件發生頻率高，持續時間長，事件起始於負海溫距平；而76年後，則是厄爾尼諾事件發生頻率略高，持續時間長，強度增大，事件起始於正海溫距平。Therefore, the wave is liable to be taken in by human body ensuing the emergence of resonance effect, which is able to activate cellular organization and promote metabolism. meanwhile, the magnetic therapy can effectively stimulate the circulation of the blood and cause the muscles and joints to relax through specific points. combining two unique functions together, the functional textile could take effect in evidence by improving human microcirculation efficiently, accelerate oxygen supply,
Nb素加磁功能產品，其中nb素所輻射的能量波正發與人體細胞中水分子律動頻率相同，極易被吸收並產生「共振效應「 ，從而活化細胞組織，促進新陳代謝，而磁療能通過穴位達到舒筋活絡的作用，二者科學的相迭加，所以效果更明顯，可充分改善人體微循環，加速氧氣的供給，提高人體細胞的再生能力，對高血壓肢體麻木關節痛肩頸痛腰肌勞損腰背酸痛等有很好的療效。The contrasting colors of purple in the background, bright yellow in a heart, and red and dark brown in the border around the heart add an uplifting sensation to the painting like white clouds in the middle of the sky, going against earth s gravity to enter into the boundless cosmos. the viewer feels as if he is being upheld by an invisible power to be free from the influence of naked eye observation so as to hear the subtle vibrations resonating from the flickering colors found in each brush stroke of the enlightened artist. he is able to enjoy wonderful mysteries and feel fine tuned frequencies, which are indescribable in worldly language and not arguable by the earthly mind
那些對比色：紫色的底金黃色的中心紅色棕色的邊，讓整幅畫清爽流利，像天空中的一片雲突破地球引力奔向浩瀚宇宙，觀賞的人好像得到無形力量的貫注，不再局限在凡夫的眼界，而能在那些水遇無痕的筆法布局中，用心傾聽出顏色的微細振動，從行雲流水的線條中，隱現出開悟神奇奧秘的享受，感受到那微細的高頻率波段不可說的天籟。This text introduces the characteristic concept of turbine control system from two traditional aspects of static and dynamic state, and the characteristics of reheating system and the power - frequency electric liquid control system, and analyzes the difference from the simulated electric control system to digital electric system. this text describes the constitute of deh system from three aspects and analyzes the reliability of deh system
本文從傳統的汽輪機靜態特性和動態特性兩個方面講述了汽輪機調節特性的概念，以及中間再熱式汽輪機調節特性、功率? ?頻率電液調節系統的特點。以陽泉二電廠deh系統為例，從硬體、軟體和控制功能群三部分敘述分析了deh的組成和各部分作用，並對deh系統的可靠性進行了分析。Accounting earnings is the key index in all accounting information, which not only reflects the past outstanding achievement, but also forecasts the growing prospect of listed companies combined with other indexes. after the publication of annual financial reporting of listed companies, investors usually evaluate the achievement of different companies by accounting earnings index when they select objects in numerous listed companies. in securities market, legislation and administration institutions value and supervise the whole course from coming into the market to exiting from the stock market by earnings index. recognition of the stock listed company, the confirmation of issuing price, absorbing new capital from market, st and pt, which have osculation connections with earnings index
另一方面，在實踐中，會計盈餘指標業是應用頻率非常高的財務要素，證券分析師和投資者大多會採用這一指標來評價不同公司間的業績，並預測其未來的發展前景。而在證券市場的監管上，立法、行政機構也是廣泛使用會計盈餘指標對公司從招股上市到摘牌下市的全過程進行評價和監督，其中股份上市公司的認定、上市發行價格的確定、上市公司的再融資、股票交易的特別處理、暫停上市和摘牌等都與盈餘指標有密切的聯系。The hypocotyl segments of cabbage were used as the explants and cultured on a ms medium supplemented with plant hormone, which was established a cabbage regenerated system. the differentiation rate of adventitious buds was above 80 %. in this study, ubic gene was transformed to cabbage through agrobacterium mediated system
同時，採用甘藍無菌苗的下胚軸為外植體，以ms為基本培養基，分別用直接分化再生系統和愈傷再生系統誘導不定芽的分化，建立了高效穩定的再生系統，不定芽分化頻率達80以上。With the high accurate transfer function it is possible to design frequency characteristic compensator to eliminate the mechanic resonance frequency characteristic of the control object. the fast steering mirror system closed bandwidth is no longer restricted by the mechanic resonance frequency and the closed bandwidth is expanded effectively
在獲得對象的高精度傳遞函數以後，使用零極點對消的方法補償系統的機械諧振，有效地擴展了快速控制反射鏡系統的帶寬，使快速控制反射鏡系統的閉環帶寬不再受制於系統的開環諧振頻率。The first part of the paper is designing the testing project for grounding resistance and insulation resistance in a new way. using 16bits ad converter with programmable control amplifier replaced the way which used changing resistance to change measure range. lt is not only improved testing precision and develop the system expediently, but also reduced the area of the circuit boardwith the new way. in order to make the electric implement safety testing system have upstanding expansibility, the software and hardware of the system adopted the modularization design. adopted mcu atmegal28 as a master mcu which control mmi, realtime clock and communication with slaver mcu. atemga8 as the slaver mcu to realize testing function. so it is easy to add or reduce the testing project. the testing implement system has been developed successfully, and the comments for the system is that it has high precision, high expansibility and easy maintain. but considering the electric implement system should have intelligence and humanity abi lity. so this paper bring forward a scheme of electric equipment safety testing embedded system with speech control. after introduce the basic theory of speech recognition, the paper expatiate the characters of this system. the system is a noise conditon, not special people, small glossary, insulation word system. with these characters design the speech recognition as fellow. utilizing cross zero ratio and short energy to ensure jumping - off point and end point ; adopting mfcc as the character parameters of speech recognition ; the character parameters than be recognized by dtw. in order to ensure the credibility of this project, first realized by matlab in computer
在介紹了語音識別的基本原理后，闡述了本系統的特點：本系統是一個噪聲環境下非特定人、小詞匯量、孤立詞的語音識別系統。根據本系統的這些特點設計了如下語音識別方案：利用過零率和短時能量相結合的方式確定語音端點；採用mel頻率倒譜系數（ mfcc ）作為語音識別的特徵參數；得到的特徵參數最後通過動態時間規整（ dtw ）的模式識別方法進行識別。為了確保本系統實現方案的可靠性，首先通過計算機利用matlab軟體來模擬，在演算法模擬實現后又進一步增加環境的復雜性：加上較大的環境噪聲、突發性的噪聲等，再通過修改參數、修改參考模板、兩級識別等各種提高語音識別精度的方法來提廣東工業大學工學碩士學位論文高識別率。The procedure of the test is as follows : first, the piezoelectric stack has been examined to test the performance parameters of the piezoelectric material ; second, the 2 - x actuator has been functioned with different static voltage to test its capability ; last, function the 2 - x actuator with voltage with different frequencies to test its dynamic properties. all the output of the actuator has been measured by the laser vibration measurement
首先對壓電堆進行試驗，驗證壓電材料的性能參數;再對推挽式雙x驅動器施加不同的靜電壓驅動它，驗證作動器的驅動能力，最後對推挽式雙x驅動器輸入不同頻率的電壓驅動，測量該驅動機構的動態特性，試驗均採用激光測試儀測量推挽式雙x驅動器的輸出特性。Frequency re - use satellite network
頻率再利用衛星網路This article is to develop autoregressive ( ar ) model spectrum estimation based on the theory of digital signal processing to analyze, process flow signal, to get the frequency of flow signal and then convert it to flow value. at last, the flow value is compared with the result that is gained by using count method
本文的主要目的是以數字信號處理的理論為基礎，採用自回歸（ autoregressive ，縮寫為ar ）模型譜估計的方法對渦街流量計的輸出信號進行分析和處理，得出流量信號的頻率，再換算成流量值，並將其與計數測量方法得出的結果進行了對比。Based on the plant expression vector of pcambia1300 - hbmp - 3m and pcambial 301 - hbmp - 3 constructed, we set up the system of high frequency regeneration and transformation of tomato cotyledons. the hbmp - 3m gene and hbmp - 3 gene were respectively transformed into tomato and tobacco by transfection of agrobacterium tumefaciens. and the transgentic plants were detected. the main results are as follows : l. the plasmid pcambial300 - hbmp - 3m carried hbmp - 3m gene and pcambia - 1301 - hbmp - 3 carried hbmp - 3 gene were respectively transferred into agrobacterium tumefaciens by electroporation
本試驗是在已經構建好的植物表達載體pcambia1300 - hbmp - 3m和pcambia1301 - hbmp - 3載體的基礎上，建立番茄子葉的高頻率再生體系和番茄子葉的高頻遺傳轉化系統，利用根癌農桿菌介導的方法，將人骨形成蛋白- 3成熟肽（ hbmp - 3m ）基因和人骨形成蛋白- 3 （ hbmp - 3 ）全長基因分別導入番茄和煙草，並對轉基因植株進行了檢測。分享友人