doppler accuracy 中文意思是什麼
doppler accuracy
解釋
多普勒精度-
Abstract : we have studied theoretically a beat effect in a four - level system due to fifth - order optical polarization, and considered the cases that the pump beams have either narrowband or broadband linewidth. we have found that the accuracy for the energy - level splitting measurement is determined by the homogeneous linewidths of the optical transitions. that is to say, this technique can achieve doppler - free precision in the measurement of the energy level splitting between two excited states which are dipolar forbidden from the ground state
文摘:研究了四能級系統中基於五階極化的拍頻效應，考慮了抽運光束為窄帶線寬或寬帶線寬的情形.發現其對能級分裂的測量精度決定於光學躍遷的均勻增寬.也就是說，這種技術在測量與基態是偶極禁戒躍遷的兩激發態之間的能級分裂時，可得到消除多普勒增寬的精度 -
Conclusion the color doppler parameters can obviously increase the diagnostic accuracy of breast masses if combined with gray - scale sonography features
結論灰階超聲與彩色多普勒超聲檢查相結合可明顯提高乳腺腫塊超聲診斷的準確率。 -
High accuracy and deep range are the goal of doppler log researching
更高的測速精度和更深的工作深度成為了多普勒計程儀發展的趨勢。 -
The primary factors which affect the performance of lfmcw signal are coelimination and distance measurement accuracy caused by doppler frequency effect
Lfmcw信號具有測量多普勒效應的優點，還能測量距離。 -
And it also analysis the radar performance such as radar doppler properties, radar system ambiguities and target location accuracy. and the software carries out the radar echoes simulation. this dissertation is devoted to : 1
論文採用模塊化的程序設計方法編寫了星載合成孔徑雷達系統設計與模擬軟體，完成星載合成孔徑雷達的系統設計和模擬工作。 -
Accuracy of frequency estimation is the kernel of doppler log performance. bandpass sampling fft method, which is suitable for deep water doppler log, is present. accuracy of this method is desirable according to simulation results
在參考借鑒大量頻率測量方法的基礎上，提出了適用於大深度多普勒計程儀的頻率估計演算法-帶通采樣fft法，並進行了模擬計算，其精度令人滿意。 -
Abstract : in this paper, the fundamentals and method of longitudinal displace mentmeasarement utilizing laser doppler effect are introduced. the factors influencing the affecting accuracy are expounded. moreover, the theory analysis and experiment - based methods are offered to improve the accuracy. this study can be applied in analyzing the surface profile and distortion, which is very important in theory and practice for the fields of aviation, mechanical and architecture industries
文摘:介紹了激光多普勒縱向位移測量的基本原理和方法，闡述了影響測量精度的要素，並在理論分析和實驗的基礎上，提出了改進措施.該項研究可應用於分析物體表面輪廓和變形狀況，對航空、機械、建築等工業有重要的理論意義和實用價值 -
In this paper, the fundamentals and method of longitudinal displace mentmeasarement utilizing laser doppler effect are introduced. the factors influencing the affecting accuracy are expounded. moreover, the theory analysis and experiment - based methods are offered to improve the accuracy. this study can be applied in analyzing the surface profile and distortion, which is very important in theory and practice for the fields of aviation, mechanical and architecture industries
介紹了激光多普勒縱向位移測量的基本原理和方法，闡述了影響測量精度的要素，並在理論分析和實驗的基礎上，提出了改進措施.該項研究可應用於分析物體表面輪廓和變形狀況，對航空、機械、建築等工業有重要的理論意義和實用價值
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