鏡像頻率 的英文怎麼說
中文拼音 [jìngxiàngbīnlǜ]
鏡像頻率
英文
frequency, image-
Later on we discuss the basic theory of multi - rate signal processing, and the polyphase algorithm for interplation filter, then produce the efficient algorithms for interplation : half - band filter and cic filter. we analyze their computing quantity and performance, especially the mirror elimination feature and the at - tenuation in the passband
之後討論了多速率信號處理的基本理論，比較了不同的內插演算法，分析了半帶濾波器和cic內插濾波器的計算代價、時頻性能，以及各自的抑制鏡像特性。In video shot segmentation, an improvement to double - threold shot segmentation algorithm is provided, which uses multi - frame sampling technique and can improve the performance significantly on the detection of gradual transition. an abrupt transition detection algorithm is also developed on the basis of the closest pixels matching in spatio - temporal slice, which decreases the false rate and computing strength greatly
在視頻鏡頭分割方面，提出了一種基於多幀抽樣的雙重比較鏡頭分割演算法，有效地提高了對視頻鏡頭漸變檢測的性能;同時，針對視頻鏡頭突變的檢測，提出了一種基於最近鄰像素匹配的時空切片鏡頭突變檢測演算法，該演算法顯著降低了突變檢測的虛檢率和計算量。The roughness of wyko and afm measuring are 0. 73nm and 0. 56nm in rms value respectively, in both primary and secondary mirrors, and will severity reduce the schwarzschlid optics throughput and the contrast of the image
73urn ） sm ， wyko檢測結果）波紋度和高頻段的0 56urn （ ms ， afm撿測結果將嚴重影響schwarzschild微縮投影物鏡的成像對比度和傳輸效率。The results show this approach is effective when there is massive cloud cover on the remote sense image. wavelet analysis is internationally recognized up to the minute tools for analyzing time - frequency. it is chiefly due to the " adaptive feature " and " mathematical micro - telescope feature "
小波分析是目前國際上公認的最新時間-頻率分析工具，由於其「自適應性」和「數學顯微鏡性質」而成為許多學科共同關注的焦點，本文利用小波改善傳統數字圖像處理方法，取得了一定效果。This ku - band three channel receiver consists of spst modules, lna modules and image rejection mixer modules. these modules were designed and tested separately, then were assembled to the whole receiver. all the circuits were designed with small - sized devices so as to reduce the total size of the receiver. and the noise figure was considerably reduced because of the image rejection mixer
另外，由於採用了鏡像抑制混頻器，從而使整機噪聲系數大為降低。在設計方法上，本文採用了先進的微波電路設計軟體ansoftserenade對所有的電路和系統進行設計、優化和模擬，大大的縮短設計周期，提高設計效率。As a result, just a set of imaging optical components, which used to merely complete alignment, now can be used for the three procedures ? die leveling, auto - focus, alignment. secondly, two vision - based optical systems for alignment are put forward. not only can high - resolution and high - quality images be gotten, but also straightforward hardware setup and good secular stability in the shop can be obtained
對本文所提出的光路結構方案中的成像鏡組在光學自動設計軟體zemax中進行了模擬和優化，成像鏡組與所採用的高解析度ccd相機和不同頻率范圍的led光源獲得了很好的匹配，並在不同頻帶和視場獲得了很好的像差平衡。Carried on the modal analysis to mirror tube structure and the whole machine, get the inherence frequency and modal shapes of structure system, not only validating the reliability of the structure, but also being advantage to improve
對鏡筒結構和整機都進行了模態分析，得出了系統的固有頻率和振型，不僅驗證了結構的可靠性，還為改善成像儀的動態特性提供了依據。分享友人