assigned frequency 中文意思是什麼
assigned frequency
解釋
分配頻率-
By selecting different ingredient and the elegant craftsmanship, el lamp can be made into all kind of colourful advertisements, such as consumer products advertising, illuminated posters, indoor company logos etc. together with the programmable inverter, assigned illuminate pattern and frequency can be customized, in order to apply to different usages for different environments, according to customers needs
不同的選料加上精緻的工藝，冷光片可製作成各式各樣色彩繽紛的廣告燈箱海報室內公司招牌等利用編程式驅動器，更可因應特定的要求，製作出?定的閃動頻率和樣式，配合不同場合的不同用途。 -
Doing the further research on the division frequency stack on the foundation of study of predecessor, at first the residual moveout correction is done to the seismic record, make the phase axle regularity, doing foundation for the same phase stack ; then carried on division scale processing by wavelet transform ; spectrum whitening is done to each scale, the high and low frequency band need to do prolongs, the middle frequency bands only increase the value of the frequency spectrum ; several kinds of methods that estimate the value of signal - noise ratio has been studied further, and summarize their advantage and disadvantage as well as the scope of application ; the seismic record after spectrum whitening is stacked by weighting with the value of the signal - noise ratio ; then estimate the value of signal - noise ratio which is each scale section after stacking, the scale that the signal - noise ratio is big is assigned big weighting, otherwise, the scale that signal - noise ratio value is small is assigned small weight ing, and carried on weighted reconstruct to each scale section
本文在前人研究的基礎上，在分頻疊加方面做了進一步的研究。首先對地震記錄進行剩餘時差校正，校齊同相軸，為同相疊加做好基礎工作；然後對地震記錄用小波變換的方法進行分尺度處理；對各個尺度分別做譜白化，對于高、低頻段需要做頻帶延拓，中間頻段僅提升頻譜值；對于幾種信噪比定量估計的方法進行了深入的研究，並且總結了它們的優缺點以及適用范圍；對譜白化后的地震記錄用信噪比估計值作為加權系數進行加權疊加；對于各尺度的疊加剖面也進行信噪比估計，對于信噪比大的尺度給予大的加權系數，反之，信噪比值小的尺度給予小的加權系數，對各尺度疊加剖面進行加權重構。 -
The experiment results show that the single frequency noise can be reduced 7db ( a ), and the broad - band random noise can be reduced effectively in assigned frequency band
實驗對單頻噪聲取得了7db （ a ）的降噪效果，對寬頻噪聲則能在指定頻帶上取得較好的降噪效果。 -
Assigned frequency band
指定周波數 -
Each channel remains at an assigned frequency within a single band
每個通道在單一的頻段內保持分配的頻率。
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