spectrum n. (pl. -tra ) 1.【物理學(xué)】譜,光譜;波譜;能譜,質(zhì)譜。 2.【無線電】射頻頻譜;無線電(信號(hào))頻譜。 3.【心理學(xué)】(眼睛的)余像;殘像。 4.〔轉(zhuǎn)義〕范圍,幅度;(連續(xù)的)系列。 an absorption spectrum 吸收(光)譜。 a bright line spectrum 線狀光譜。 an optical spectrum 光譜。 a solar spectrum 太陽光譜。 a wide spectrum of opinion 意見的不同幅度甚大。
peak vi. 1.瘦弱;消瘦,憔悴。 2.減少,縮小 (out)。 peak and pine 消瘦;憔悴。 peak2 n. 1.山峰,山頂;孤山。 2.(胡須等的)尖兒;尖端。 3.最高點(diǎn),絕頂;最大量;巔值,峰值;【物理學(xué)】波峰。 4.(衣著等的)尖形突出部;(帽子等的)鴨舌,遮檐。 5.〔方言〕岬,海角。 6.【航?!啃辫旒忸^;船頭[船尾]尖艙;錨爪。 a flood peak 洪峰。 the peak performance 最高生產(chǎn)率。 the after peak (船的)尾艙。 peak position 〔美國(guó)〕棒球聯(lián)賽的最高名次。 peak year 【統(tǒng)計(jì)學(xué)】最高紀(jì)錄年。 vt. 1.豎起,使成峰狀,使高聳。 2.使達(dá)到最高峰。 3.(劃船休息時(shí))直豎(槳等);(鯨魚)豎起(尾巴)。 She pursed her pretty lips and peaked her eyebrows. 她緊閉美麗的雙唇,豎起眉毛。 vi. 1.高聳,尖起;(槳等不劃時(shí))豎起;(鯨魚等)翹起尾巴。 2.達(dá)到最高峰。
A general rule to determine real spectrum peak position 判定真實(shí)譜峰位置的一個(gè)通用準(zhǔn)則
Red shift of pl spectra peak was observed , and pl lifetime would rise at the same time 發(fā)現(xiàn)加入ingaas及alas緩沖層后使inas量子點(diǎn)發(fā)光峰強(qiáng)度增大,譜峰紅移,發(fā)光壽命增大。
Spectrum peaks were found in the lower frequency area of the vibration signals obtained from the compressor set 摘要分析某壓縮機(jī)組振動(dòng)信號(hào)的頻譜發(fā)現(xiàn)低頻處具有較高的譜峰。
( 3 ) the dissertation designs the hardware diagrams of corelation matrix module and spectrum peak finding module . accroding to the hardware diagrams , the dissertation codes by vhdl and do function simulation and timing simulation ( 4 )本文對(duì)music算法的各模塊進(jìn)行了互連調(diào)試工作。當(dāng)采用了altera公司cyclone系列的fpga實(shí)現(xiàn)music算法時(shí),單次運(yùn)算時(shí)間在20us以內(nèi)。
The problem of reducing the numerous computation load for spectrum search in conventional music algorithm is also considered , and a random spectrum peak search method via mh sampler is presented , which largely reduces the computation load 論文還就傳統(tǒng)music計(jì)算量大的問題提出了一種基于mh采樣理論的music譜峰隨機(jī)的搜索方法,大大降低了music譜峰搜索的運(yùn)算量。
Fft is applied to data and spectra peak search is done , then using the data near the spectra peaks to compute two 4th - order cumulants matrix to form rotational invariance matrix pencil which the esprit algorithm can be applied to 對(duì)采樣數(shù)據(jù)進(jìn)行fft和譜峰搜索,截取譜峰附近數(shù)據(jù)構(gòu)造一路信號(hào)的四階累積量矩陣和二路信號(hào)的互四階累積量矩陣,構(gòu)成了一對(duì)esprit算法所需要的旋轉(zhuǎn)不變矩陣束。
The frequency analysis of area - averaged ssta time series in key regions indicates that the power spectrum peaks is centered at 2 - 4yr annual oscillation , and there is also long temporal scale oscillation such as quasi decadal oscillation revealed by wavelet analysis 時(shí)頻分析表明,這兩個(gè)海區(qū)區(qū)域平均的ssta時(shí)間序列存在顯著的2 - 4年年際振蕩以及準(zhǔn)年代際變化。自相關(guān)分析表明西風(fēng)漂流區(qū)與熱帶中東太平洋ssta在冬季的持續(xù)性較好。
The application of wavelet transform in the spectrum signal processing is studied . the influence of the transform on the gauss spectrum peak is analyzed . a method is proposed to reduce the noise and background in the spectrum signal obtained by the micro spectrometer 研究了采用小波變換來消除光譜信號(hào)中的噪聲和背景信號(hào)的方法,并深入研究了小波變換處理對(duì)真實(shí)光譜信號(hào)的影響,提出了采用小波變換消除光譜高頻噪聲和低頻背景信號(hào)的方法。