查询词典 spectrum analysis

Then a series of practical engineering problems, such as the image shaping principle of infrared laser device, the utilizing of infrared laser device in power transformer fault diagnosis, the working procedure in real field operation, the acquiring of heat spectrum from fault transformer in field test, the analyzing of heat image spectrum etc, were considered and overcame.

由于红外诊断具有非接触性和诊断运行中设备的特点，其诊断结果受到外界环境和判别方法的影响，因此提高变压器红外诊断技术的准确性及提高其应用效果具有重要影响，对变压器红外诊断应用技术进行研究具有重要的工程实用价值。

On the basis of studying EH-4 data processing, we ase a menthod to read time-sires file correctly, adopt periodogram means to recalculate auto-power spectrum, cross-power spectrum and tensor impedance component, and recalculate resistivity depend on tensor impedance component. We compile proprietary softwareEH-4 Data Processing Program.

本文在剖析EH-4系统数据处理流程的基础上，正确地读取了EH-4系统原始时间序列文件，采用周期图方法重新计算了自功率谱、互功率谱和张量阻抗分量，以及由阻抗定义的视电阻率，编制了专用软件EH4 Data Processing Program。

As a new and advanced technology in the world to gain spectrum,interference imaging spectrometer is superior in high throghout and multichannel. But a series of digitial processing must be executed to get spectrum because the raw datais interference figure of targets. In thesis, taking ChangE-1ⅡS as an example, thetechnology about calibration, spectral reversion, performance evaluation ofcongeneric instrument are studied.

干涉型成像光谱仪具有高通量、多通道等优势，是一种世界上先进的间接获取光谱信息的新技术，它获得的直接信息是干涉图，需要经过一系列处理才能得到光谱维信息，论文以CE-1干涉成像光谱仪为分析对象，研究了适用于同类成像光谱仪器的信息反演、定标及评价技术。

Dynamic spectrum allocation optimizes the allocation of uncertain spectrum for binary interference model and accumulative interference model.

动态频谱分配针对二进制干扰模型和累积干扰模型进行不确定频谱资源的优化分配。

By simulating the absorption spectrum of molecule iodine absorption filter ranges from 470nm~550nm, this paper selects the absorption spectrum of molecule iodine absorption filter that satisfies the requirement of frequency discriminator in detecting system and ascertains the center emission frequency of laser emitter.

以基于边缘探测技术的激光雷达监测大气信道和海洋水下信道环境参数为例，通过仿真出碘分子吸收滤波器在470nm～550nm区间范围内的吸收光谱谱线，选择出合适的吸收谱线并确定发射激光信号的中心频率，并在此基础上，给出了满足探测要求的激光发射信号单稳频指标，为实际探测系统的设计奠定基础。

The FTIR spectrum of DTC-TETA showed strong absorption peaks at 1 461-1 388 cm-1 and 1 174-996 cm-1 which were attributed to partly double bonds of C and C,respectively.The UV spectrum of DTC-TETA had two absorption peaks at 265 and 290 nm,assigned to π—π* transition of N…C…S radical and nonbonding electron n—π* transition of S…C…S radical to conjugated system,respectively.

在DTC-TETA的红外光谱图中，在1461-1388cm-1处和1174-996cm-1处分别出现含有部分双键性质的〖JGC〖ZJXS，YN键和键的特征吸收峰；在紫外光谱图中，分别在265和290 nm处出现两个最大吸收峰，分别对应于N…C…S基团的π—π*跃迁和S…C…S基团中硫原子上非键电子向共轭体系的n—π*跃迁；元素分析结果表明该化合物中碳、氢、氮、硫的摩尔比近似为

The W-CDMA overlay GSM means use tuneable notch filters at the CDMA transmitters and receivers.The spectrum of notch filters is just the spectrum of GSM.

窄带覆盖的基本原理是N-CDMA信道不与GSM频带在同一小区的同一扇区重叠，而是和N-CDMA扇区相邻小区里的，且与该扇区不相邻的GSM扇区重叠。

Firstly, a group of red.shifts were determined using the emission line info extracted from the observed spectrum; Secondly, the template was red.shifted according to the candidates, and the correlation between the observed spectrum and the redshifted template was measured.

首先，利用提取出的发射谱线信息确定一组红移候选；然后，按这些红移候选将静止模板光谱红移，计算所得光谱与目标光谱的相关值；最后，确定最大相关值对应的红移候选为目标光谱的红移。

It was shown that the SNR of the RADS could be improved by using a microwave cavity with proper microwave field mode and high microwave filling factor, a rubidium spectrum lamp with high spectrum purity and a separated isotope filtering scheme in the physics package design. The performance of the rubidium atomic frequency standard could be improved by taking all these factors into consideration.

本文分析了微波腔的结构、铷光谱灯的光谱纯度和同位素滤光方案对信噪比的影响，指出采用模式优越、微波填充因子大的微波腔，光谱纯度高的铷光谱灯，用分离滤光方法进行同位素滤光，可以提高铷原子鉴频信号的信噪比，从而使铷频标的稳定度指标得到进一步改善。

Investigate the assisting of the relation and soil and groundwater monitoring data among the surface feature and image established the relation of the spectrum characteristic with surface feature ,using two kinds of classification and improved post-classification, methods lies two respects: 1Salt steep spectrum luminance value curve of ground higher than surface feature average luminance value curve obviously, and other surface feature luminance value lower than or have around average luminance value curve little wave water body mean the land water areas among them obviously, including the river and surface of water , surface of water of the reservoir and hole pool surface of water By view trend of the

从计算结果得出，盐渍地上的NDVI 值分布在一定范围内，这样就可以取一定的阀值，将反射率较低的盐渍地提取出来。根据盐渍地分布与地下水的相互关系，对分类后的图像进行处理，提高了精度。2 充分利用遥感与GIS 技术在地学分析中的优势，计算各类盐渍地面积、荒漠、水体面积变化，分析近三十年来研究区土地盐渍化动态变化的规律，包括面积变化、盐渍化程度的变化，分析大范围时间尺度上土地盐渍化动态发展的整体趋势。

The teacher likes the honeymouthed little girl very much.

老师很喜欢这个嘴甜的小姑娘。

Mr. Notker Bien's interests are traveling, spending quality time with the family and long-distance-running.

诺特卡·柏恩先生热爱旅游，长跑，以及和家人一起共度美好时光。