spectrum n. (pl. -tra ) 1.【物理学】谱,光谱;波谱;能谱,质谱。 2.【无线电】射频频谱;无线电(信号)频谱。 3.【心理学】(眼睛的)余像;残像。 4.〔转义〕范围,幅度;(连续的)系列。 an absorption spectrum 吸收(光)谱。 a bright line spectrum 线状光谱。 an optical spectrum 光谱。 a solar spectrum 太阳光谱。 a wide spectrum of opinion 意见的不同幅度甚大。
peak vi. 1.瘦弱;消瘦,憔悴。 2.减少,缩小 (out)。 peak and pine 消瘦;憔悴。 peak2 n. 1.山峰,山顶;孤山。 2.(胡须等的)尖儿;尖端。 3.最高点,绝顶;最大量;巅值,峰值;【物理学】波峰。 4.(衣着等的)尖形突出部;(帽子等的)鸭舌,遮檐。 5.〔方言〕岬,海角。 6.【航海】斜桁尖头;船头[船尾]尖舱;锚爪。 a flood peak 洪峰。 the peak performance 最高生产率。 the after peak (船的)尾舱。 peak position 〔美国〕棒球联赛的最高名次。 peak year 【统计学】最高纪录年。 vt. 1.竖起,使成峰状,使高耸。 2.使达到最高峰。 3.(划船休息时)直竖(桨等);(鲸鱼)竖起(尾巴)。 She pursed her pretty lips and peaked her eyebrows. 她紧闭美丽的双唇,竖起眉毛。 vi. 1.高耸,尖起;(桨等不划时)竖起;(鲸鱼等)翘起尾巴。 2.达到最高峰。
A general rule to determine real spectrum peak position 判定真实谱峰位置的一个通用准则
Red shift of pl spectra peak was observed , and pl lifetime would rise at the same time 发现加入ingaas及alas缓冲层后使inas量子点发光峰强度增大,谱峰红移,发光寿命增大。
Spectrum peaks were found in the lower frequency area of the vibration signals obtained from the compressor set 摘要分析某压缩机组振动信号的频谱发现低频处具有较高的谱峰。
( 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 )本文对music算法的各模块进行了互连调试工作。当采用了altera公司cyclone系列的fpga实现music算法时,单次运算时间在20us以内。
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 论文还就传统music计算量大的问题提出了一种基于mh采样理论的music谱峰随机的搜索方法,大大降低了music谱峰搜索的运算量。
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 对采样数据进行fft和谱峰搜索,截取谱峰附近数据构造一路信号的四阶累积量矩阵和二路信号的互四阶累积量矩阵,构成了一对esprit算法所需要的旋转不变矩阵束。
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 时频分析表明,这两个海区区域平均的ssta时间序列存在显著的2 - 4年年际振荡以及准年代际变化。自相关分析表明西风漂流区与热带中东太平洋ssta在冬季的持续性较好。
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 研究了采用小波变换来消除光谱信号中的噪声和背景信号的方法,并深入研究了小波变换处理对真实光谱信号的影响,提出了采用小波变换消除光谱高频噪声和低频背景信号的方法。