頻率偏移計 的英文怎麼說
中文拼音 [bīnlǜpiānyíjì]
頻率偏移計
英文
frequency carrier diviation meter- 頻 : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
- 率 : 率名詞(比值) rate; ratio; proportion
- 偏 : Ⅰ形容詞1 (不正; 歪斜) inclined to one side; slanting; leaning 2 (只側重一面) partial; prejudi...
- 移 : Ⅰ動詞1. (移動) move; remove; shift 2. (改變; 變動) change; alter Ⅱ名詞(姓氏) a surname
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 頻率 : frequency; rate
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As the experiment results show, multiple reasons led to the offset of oscillating frequency, including diode ’ s nonlinear characteristic, fluctuation of electrical source voltage, traction of load impedance, change of environmental temperature and humidity and the design of circuit
實驗結果表明多種因素引起了振蕩頻率的偏移,包括二極體的非線性、電源電壓的波動、負載的牽引、環境溫度濕度變化以及電路板設計方面的因素等。In term of analyzing and summarizing the existing achievement, propose an advanced and practical wavefield extrapolation operator and arithmetic of forward modeling and migration, which obtain numerical simulation and analysis completely and systemically and exploited new field of fractured reservoir seismic wavefield numerical simulation and applicationin in frequency - wavenumber domain
在總結、分析前人研究成果的基礎上,提出了具有前瞻性和實用性的波場延拓運算元與正演、偏移演算法,較系統全面地進行了數值計算與分析,開辟了頻率?波數域縫洞儲層地震波場數值模擬與應用的新領域。At the doppler centroid aspect, this paper make use of maximum value method ; energy method and autocorrelation function method to estimate doppler centroid. at the doppler frequency aspect, this paper make use of image offset method ; time - frequency method ; minimum entropy and fractional fourier transformation method to estimate doppler frequency rate
在多普勒參數估計中,採用了最大值法、能量法和自相關函數法進行多普勒中心頻率估計;採用了圖像偏移法、時頻分析法、最小熵法和分數階傅里葉變換法進行多普勒調頻斜率估計。In the synchronous techniques based pilot symbols, here propose a frequency offset estimating arithmetic using discrete pilot symbols. we pick up integer times sub - carrier frequency offset from the same ofdm symbol and estimate exact
此外,在頻偏估計方面,推導出短訓練序列前後兩段時域符號間的關系,並利用此進行粗頻偏估計,使頻率偏移的估計范圍大大增加。In chapter 5, the complex envelop simulation block diagrams of fh transmitter and receiver are presented at first. then key techniques of simulation system are discussed, including frame processing structure, fh sequence generator, etc. finally, simulation models of fh transmitter, receiver and jammer are presented. the influence of frequency excursion on performance of multi - tone continuous wave jamming is analyzed
第五章首先設計了跳頻發信機成員和接收機成員的復包絡模擬框圖;其次討論了跳頻模擬系統實現的關鍵技術,包括幀處理結構、跳頻序列發生器等;最後給出了跳頻通信發信機、接收機以及干擾機成員的模擬模型,分析了頻率偏移對多頻連續波干擾性能的影響。In this paper, an optimized design method is presented to deal with the edge field effect problem in the parallel - coupled microstrip bandpass filters
摘要提出一種通過提升設計頻率來解決平行耦合微帶帶通濾波器中邊緣場效應導致的中心頻率偏移的方法。But the application of the scheme in chapter 3 is not suitable for the distributed mimo systems. so in chapter 4 we proposed a novel synchronization algorithm for mimo - ofdm system
但是第三章中提出的同步設計方案,前提是假設mimo - ofdm系統只有同一個時間偏移和頻率偏移,不能應用於分散式mimo系統。A pilot subcarrier - based joint frequency offset correction and channel estimation method for ofdm systems
系統中一種基於導頻子載波的聯合頻率偏移糾正和通道估計方法On the base of the fujian power system that has the special configuration of " large power generator with small power system " in 2000, constructs power system models of fujian and fujian interconnected with other parts, does a lot of calculation and analysis and simulation, researches the security mechanism and rule of the fujian special power system interconnected with large power system. the above connection can keep security and stability and can make obvious benefits, but when the transmission power reach to excessive quantity the main power grid will increases interconnected flow - in or flow - out exchange power load. the power operation state tended to instability ; the infirmable interconnection make s the damp infirmable
本文以2000年前後具有「大機組小電網」特殊結構的福建電力系統為背景,建立了福建電力系統及其與外部互聯的數學模型,開展大量的模擬計算分析,研究了「大帆組小電網」電力系統與大容量電力系統互聯偏弱的安全穩定性的機理和規律:前述互聯可以安全穩定運行,取得顯著效益,當傳輸功率達到一定量后,主網架增加了送出或吸收互聯交換功率的負載,系統運行狀態向穩定性水平有所下降的方向轉移;聯絡偏弱使阻尼偏弱,聯絡線小幅低頻振蕩和大幅低頻振蕩易被激發,聯絡線一旦重載斷開,系統高周或低調嚴重。Then based on the cyclostationarity of ofdm symbol, a synchronization algorithm for the joint estimation of timing offset and frequency offset is proposed and discussed in detail
並在此基礎之上提出了一個基於循環平穩的ofdm定時偏移和頻率偏移的聯合估計演算法。Timing recovery and frequency offset estimation for ofdm system
系統定時與頻率偏移估計We proposed a new time acquisition method, called adaptive subsection correlation time acquisition method of mc - cdma system, the subsection correlation length is adapted according to the probable frequency offset
提出了用於mc - cdma系統的新型時間同步法一自適應分段相關時間同步法。它根據估計頻率偏移自適應調整分段相關長度。In cellular envirorunents, because of the influence of several adverse factors, such as muitipath, non - line - of sight propagation, noise, interference and channel frequency characteristics, radio statistics measuremenis like tdoa, toa and aoa related to mobile position, the performance of location algorithms mny be significantly degraded and the position estimation of ms is inevitably biased
在蜂窩網路環境中,由於受多徑、非視距傳播、噪聲、干擾和通道頻率特性等多種不利因素的綜合影響,使tdoa 、 toa 、 aoa等與移動臺位置有關的電波特徵測量值不可避免地出現較大誤差,從而使各種定位演算法的性能顯著下降,造成移動臺位置估計出現較大偏差。The method has perfect effect on calculating the voltage swell and sag, voltage notch and frequency deviation. numerous simulations also prove the effectiveness of the method
對于電壓驟升驟降、電壓缺口以及頻率偏移,該計算方法也有很好的效果,大量的模擬結果證明了這一點。Image offset method that is also fast can be applied to motion compensation, time - frequency method is intuitionistic and have a better accurate, which is applied extensively on offline. fractional fourier transformation method is not accurate, but which have some now application in signal processing
在多普勒調頻斜率估計中,時頻分析法比較直觀,估計精度也不錯,脫機處理中獲得了廣泛的應用,圖像偏移法估計速度快,在運動補償中得到了應用。分享友人