local spectrum 中文意思是什麼

local spectrum 解釋
局部頻譜
  • local : adj 1 地方的，當地的，本地的。2 局部的。3 鄉土的，狹隘的，片面的。4 【郵政】本市的，本地的；【鐵...
  • spectrum : n. （pl. -tra ）1. 【物理學】譜，光譜；波譜；能譜，質譜。2. 【無線電】射頻頻譜；無線電（信號）頻譜。3. 【心理學】（眼睛的）余像；殘像。4. 〈轉義〉范圍，幅度；（連續的）系列。
  1. In addition, effects of several factors such as local site conditions, focal mechanism, epicentral distance and seismic magnitude on these parameters are discussed, and several significative results and conclusions are obtained. in all records there are about 1 / 3 vertical ground motion ’ s peak acceleration bigger than 2 / 3 of the corresponding horizontal one, so the action of vertical ground motion should not to be underestimated. vertical design response spectrum equals that the horizontal design response spectra times 65 % is probably unsafe when period is short, and suggest adopting different coefficients when at different periods

    本文基於對大量歐洲強震記錄的研究，分析了地震動豎向與水平向分量在峰值加速度、反應譜值、頻譜周期等參數方面的差異，以及這些參數與場地、震源機制、震級和震中距的關系，得到了以下有意義的結果和結論:在本文分析的地震記錄中大約1 / 3的記錄加速度峰值比大於2 / 3 ，豎向地震動分量的作用不可低估;在短周期，豎向地震動影響系數的最大值僅取為水平向地震動影響系數最大值的65 %是偏於不安全的，可以考慮按周期分段採用不同的折減系數;我國現行抗震規范中設計反應譜特徵周期的取值偏低，可能是偏於不安全的;豎向與水平向地震動分量卓越周期的比值在0 . 7 - 0 . 9之間，豎向設計反應譜的特徵周期應有單獨規定。
  2. With the strong support from both local and overseas exhibitors and buyers, the fair again maintained its leading position as the largest in asia and third in the world. the fair displayed a wide spectrum of products including electronic toys, educational toys and games, baby toys, die cast figures, party items, soft toys and sporting goods, etc

    展覽會的內容豐富，為協助參展商盡量接觸到目標買家，提高展覽成效，大會將產品分門別類，有益智玩具及游戲、電池操作玩具及電子玩具、嬰兒玩具及用品、壓鑄及機械玩具、派對用品、玩具零件及配件、綜合用品、戶外及運動用品、軟身玩具及洋娃娃等。
  3. Firstly the phase is extracted from interferogram by filtering and displacing frequency spectrum. then the wavefront and the line integral density are recovered by using fft or polynomial fitting method. lastly the radial local density distribution is calculated from the fitting curve of line integral density by the abel inversion

    首先對干涉圖進行頻譜濾波，用頻譜移頻法從干涉圖中提取相位，然後用快速傅立葉變換或多項式擬合實現波面重建，計算線積分密度，再利用abel積分變換從線積分密度的擬合曲線中反演徑向體密度分佈。
  4. The theory and main characteristics of wireless spread - spectrum technology are analyzed, and based on it, a wireless local area network ( wlan ) of gps real - time supervisory system for roller compaction is established, which not only implements the bidirectional data communication between general control center and each mobile remote, but also achieves resource share among each node of the wlan

    摘要分析了無線擴頻技術的原理及主要特點，組建了碾壓gps實時監控系統的無線局域網，實現了總控中心和各移動遠端的雙向無線數據傳輸及局域網內各節點的資源共享。
  5. The method was correlate search and fft carrier detection, which could solve the problem of the capture of the spread spectrum code under the condition of low snr and big frequency offset. we also put forward a method, shift receiving window and correlate with local sequence, which not only could solve the problem of symbol synchronization but also could acquire the statistics of the multipath. then we utilized the results of the channel estimation and the technology of rake receiver to decode the received spread spectrum sequence and acquire rude information

    方案中提出了：相關搜索、 fft檢測信號載波的方法，解決了低信噪比、大頻差條件下擴頻碼的同步捕獲難題；滑動相關完成位同步的方法，解決了低信噪比下的同步問題；在時域利用相關進行通道估計，然後利用rake接收技術完成相關解擴的方法，一定程度上解決了多徑衰落影響解擴性能的問題。
  6. High - accuracy frequency estimation based on the continuous zoom in the local spectrum

    基於局部頻譜連續細化的高精度頻率估計演算法
  7. Four different kinds of texel block partition methods and corresponding coding algorithms are adapted according to the local spectrum feature of the texture image

    針對紋理圖象的局部特徵，採用4種不同的紋理單元劃分和編碼演算法來對其進行編碼。
  8. Firstly, the system for receiving and disposing weather - satellite data provided by the national satellite meteorology center was used to distill spectrum data of channel - 1, channel - 2, channel - 4 and channel - 5 from noaa / avhrr ib data, and the spectrum data were transferred to local area file by the method of projection

    應用國家衛星中心提供的「極軌衛星資料接收與處理系統」 ，從noaa avhrr1b文件中提取廣西區域范圍內各通道的光譜資料，進行投影變換後生成等經緯度圖像文件。
  9. It induces the idea of pixel ' s 8 - neighbor fourier series, randomly chooses the local region of texture and computes the spectrum of it. after quantizing the spectrum, the spectrum histogram of the local area is extracted and then provided to the sofm network as a feature vector to train the net

    引入象素的八近鄰付立葉級數，計算隨機選取的紋理區域的紋理譜並量化得到譜直方圖，將其作為sofm網路的特徵模式輸入並訓練網路。
  10. 5. a study is made on the energy spectrum estimation approach based on gaussian - chirplet - transform, which is superior to conventional power spectrum estimation in local fault diagnosis for gear

    利用高斯線調頻小波變換作信號的譜估計，比經典的自功率譜估計在齒輪局部故障診斷中取得了更好的效果。
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