density of spectral line 中文意思是什麼

density of spectral line 解釋
譜線黑度
  • density : n. 1. 稠密;濃厚。2. 【物理學】濃度;密度;比重。3. 愚鈍,昏庸。
  • of : OF =Old French 古法語。
  • spectral : adj. 1. 鬼的;鬼怪(似)的。2. 【物理學】光譜的。
  • line : n 1 線;繩索;釣絲;測深度用繩,捲尺。 a fishing line 釣魚線。 be clever with rod and line 會釣魚...
  1. Plasma characteristics of a rf ion source are investigated by emission spectroscopy. the spatiotemporal spectral line intensities of the first three atomic lines in hydrogen bahner series ( = 656. 28, 486. 13, 434. 05nm ) of rf ion source plasma, are measured with calibrated optical multichannel analyzer ( oma ). some plasma parameters, including electron temperature, hydrogen atom density and hydrogen ion density, are calculated and analyzed using partial local thermodynamic equilibrium ( plte ) theory and abel transform

    實驗採用絕對定標后的光學多道分析系統( oma )測定了離子源等離子體不同時間和空間位置的氫原子巴耳末譜線系中前三條譜線( = 656 . 28 , 486 . 13 , 434 . 05nm )的強度,並採用plte的理論和abel變換方法,計算出了高頻離子源等離子體的電子溫度、氫原子濃度、氫離子濃度等參數在放電的不同階段和徑向分佈情況,並進行了簡要分析。
  2. The spectral correlation density must be estimated before the ds signal parameter estimation. in order to reduce the effect of random noise, we provide a improved method to estimate the spectral correlation density which is based on the average algorithm. it can make the spectral line be more obvious, and improved the snr limit when estimating these parameters

    在利用ds信號譜相關域所表現的特徵進行參數估計時,首先要利用有限時間數據對ds信號進行譜相關密度估計,為降低隨機噪聲對譜相關密度估計的影響,本文引入了集平均的思想,提出採用集平均的方法估計譜相關密度,從而在參數估計時,特徵譜線更顯著,提高了參數估計的信噪比容限。
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