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- SEISMIC FIRST BREAK PICKUP USING WAVELET TRANSFORM AND POWER RATIO METHOD 用小波變換與能量比方法聯合拾取初至波
- A fast algorithm peforming tissue density inhomogeneity corrections using a modified form of generalized equation of power law tissue-air ratio method(BATHO)is described. 組織空氣比指數校正法(簡稱batho法)是放射治療計劃進行組織密度校正的一種重要方法。
- So the void ratio method is feasible in compaction control of subbase. 因此,路基壓實用空隙率法控制是切實可行的。
- The superiority of the method is the pectinate filter characteristic, that is, the power ratio of the two output arms changes fast with the Bragg wavelength while in the rising or falling edge of the output spectrum. 該方法主要是基於 MZ 干涉儀的梳狀濾波特性,即在輸出光譜的上升或下降沿兩輸出臂的功率比值隨波長變化很快,通過調整干涉儀臂長差,得到具有陡峭邊沿的濾波器。
- With respect to the problem of high Peak-to-Average Power Ratio(PAPR) of Orthogonal Frequency Division Multiplexing(OFDM),an improved reducing PAPR method by reversed subcarriers is presented. 針對正交頻分復用系統(OFDM)所具有的高峰均比問題,提出了一種改進的預留子載波降低OFDM系統峰均比功率的方法。
- Based on this OFDM PC model, the result of the MATLAB simulation gives the idiograph method to reduce downlink of high peak to average power ratio (PAPR) and difficult synchronizatio. 由MATLAB模擬所得結果,得出了OFDM技術應用所遇到的高功率峰均值比(PAPR)值和同步問題的具體解決措施。
- We analyze the effect of the method to performance of system, which was proposed on reference [4] based on using different spreading and dispreading codes to reduce peak-to-average power ratio (PAPR). 摘要在文獻[4]採用不同擴頻碼和解擴碼來降低高峰均功率比的基礎上,通過模擬實驗分析不同擴頻碼和解擴碼對系統性能的影響。
- The normal ranges derived with the radioulnar ratio method demonstrated larger variation than originally reported. 橈尺比率法正常範圍顯示與原先報道相比有更大的差異。
- One of the key techniques is to reduce the peak-to-average power ratio(PAPR) of the OFDM-CPM system. 降低OFDM-CPM系統中的峰值平均功率比(PAPR)是關鍵技術之一。
- The distribution patterns of Amanita population were analyzed by means of variance/mean ratio method. 摘要採用方差/均值比率法測定了鵝膏屬種群的分佈格局類型。
- A simple but effective scheme to reduce the high peak-to-average power ratio (PAPR) of OFDM is presented. 摘要針對正交頻分復用(OFDM)所具有的高峰均比問題,提出了一種簡單有效的降低峰均比的非線性變換方法。
- The square ratio method and basin precipitation method are commended for annual runoff calculation. 在年徑流計算中,建議採用面積比法和流域雨量法。
- However, the major drawback of WOFDM is the peak-to-average power ratio(PAPR) problem. 然而小波正交分頻多工技術的主要缺點,就是有太大的峰均值功率比。
- The composition and stable constant were measured by equimolar continuous change method and the molar ratio method. 用等摩爾法和連續變化法測定了締合物的組成和穩定常數。
- The curve of effective power ratio shows convexity shape along with increase of rotational speed or throttling. 有效功比率隨轉速或油門開度的增大基本成中凸狀。
- Objective:To discuss the value of ratio method to estimated the function of thyroid nodule. 目的:探討用比值法判斷甲狀腺結節功能狀態的價值。
- Reducing the Peak-to-Average Power Ratio(PAPR) is one of the key technologies in MC-CDMA system. 降低信號峰平比(PAPR)是多載波碼分多址(MC-CDMA)系統的關鍵技術之一。
- The basic principle and its application of chronological loop curve method, later water level method, adjusting factor method and fluctuating ratio method were analyzed here. 介紹連時序繩套曲線法,水位后移法,校正因數法,漲落比例法的基本原理及其在梧州水文站的應用分析。
- To address the first question, power simulations are used.Mantel-Haenszel and likelihood ratio methods are the best for non-matched data. 再以有限元素方式做回授控制,分析此一結構在回授控制的制振效果。
- The increase of DP,amplitude and power ratio(PR) in the obesewere significantly higher than those in control group(P<0.01 and P<0.05). 肥胖組餐后功率及振幅增加值顯著高於正常體重組(P<0.;01);