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- In this approach,a phase deduction frequency estimator(PDFE) was employed to perform initial carrier-frequency coarse estimation and accomplish frequency acquisition in short time. 該方法采用相位推算法進(jìn)行快速載波頻率初估計,完成頻率的捕獲。
- A new code acquisition method based on phase difference correction of FFT is presented to solve the problem of long code acquisition time in high dynamic DSSS receivers having large frequency offset. 針對大頻偏下高動(dòng)態(tài)直擴接收機偽碼捕獲時(shí)間長(cháng)的問(wèn)題,提出了一種新的基于FFT相位精確估計頻偏的改進(jìn)方法。
- Experiments show that the line scanning frequency of this scheme has attained 25Hz, acquisition time for target is less than 3s and tracking speed is 3.0/s, and this scheme also has the properties of low power consumption and small volume. 實(shí)驗表明;此方案的行掃描頻率達到25Hz、目標捕獲時(shí)間小于3s;跟蹤速度達3.;0°/s;且具有功耗低、體積小的特點(diǎn)。
- A new method of tailored detection of partial NMR spectrum with delaying acquisition time is provided. 本文介紹一種利用延遲采樣實(shí)現部分譜的Tailored檢測的方法。
- A better method for direct sequence spread spectrum(DSSS) receiver to decrease the acquisition time is proposed. 提出一種減小直接序列擴頻(DSSS)接收機信號捕獲時(shí)間的改進(jìn)方法。
- Based on the property of OFDM signal, a new carrier frequency acquisition algorithm is proposed, which employs only one block of identical time-domain training sym-bols. 該文從OFDM信號的特性出發(fā)，采用單一訓練幀，將OFDM系統的載波頻率捕獲等效為單載波頻差估計。該文提出的算法僅使用一幀輔助數據；
- The acquisition time of 3D FS FSPGR sequence was 1 minute 32 seconds,the sensitivity,specificity and accuracy of which were 92%,71%,85%. 3DFS FSPGR序列掃描時(shí)間為 1分 3 2秒 ,其診斷髕股關(guān)節軟骨病變的敏感性、特異性和總符合率為 92%25、71%25和85%25 ;
- The acquisition time of 3D FS SPGR sequence was 4 minutes 55 seconds,the sensitivity,specificity and accuracy of which were 92%,86%,90%. 3DFS SPGR序列掃描時(shí)間為 4分 5 5秒 ,其診斷髕股關(guān)節軟骨病變的敏感性、特異性和總符合率為 92%25、86%25和90%25。
- Using 8-row detector spiral CT, cine scan, slice thickness 5 mm/4 slices, scan time was 1 second per circle, acquisition time was 40 seconds. 采用8層螺旋CT灌注成像,電影模式,層厚5mm,4層/圈,掃描時(shí)間1s/r,數據采集時(shí)間40s。
- The correct detection probability,false alarming probability and mean acquisition time of the proposed method was derived. 給出了該算法的檢測概率、虛警概率和平均捕獲時(shí)間等公式.
- The system is easy to construct and simple to use and has a higher spectral resolution than conventional MSPs without increasing the acquisition time. 該系統不僅容易構造、簡(jiǎn)單易用 ;而且在不增加采集時(shí)間的情況下具有比常規 MSP系統更高的光譜分辨力 .
- Simulation results show that the new method eliminates the influence of large Doppler shifts effectively, with fast acquisition time. 仿真結果表明,這種方法可以有效地消除大Doppler頻移的影響,迅速完成擴頻碼的捕獲。
- Sinc data interpolation method is more suitable for those systems which have a stringent demand for low SNR environment and acquisition time. Sinc內插算法更適合在低信噪比下工作和對捕獲時(shí)間有嚴格要求的系統。
- Monographs acquisitions time and cost studies: the next generation. 專(zhuān)題論文時(shí)效和費用研究:未來(lái)發(fā)展。
- The mean acquisition time of the FSASE method is derived by the generating function flow graph technique for the fading channel. 文中采用生成函數流圖法推導出了衰落信道下FSASE算法平均捕獲時(shí)間的閉式解。
- "As another adantage, because of its rapid acquisition time, FD-OCT aoids motion artifact that can confound interpretation of conentional OCT images. FD-OCT還有一個(gè)優(yōu)點(diǎn)：由于其掃描時(shí)間短，FD-OCT避免了在傳統的OCT成像中由于運動(dòng)偽影引起的圖像模糊。
- Considering acquisition time and complexity of hardware, phase searching simultaneously in muti-channel, is used in PN acquisition. 偽碼捕獲采用多通道并行偽碼相位搜索策略,兼顧了捕獲速度和硬件復雜度的要求;
- CAD of PLL frequency acquisition processing 鎖相環(huán)頻率捕捉過(guò)程的計算機輔助設計
- Zhang Xinzhu said that in examination merger and acquisition time, most important one step was the limits the related market. 張昕竹介紹說(shuō)，在審查并購的時(shí)候，首要一步是界定“相關(guān)市場(chǎng)”。
- weak signal frequency acquisition 微弱信號頻率捕獲
