查询词典 spectral analysis

Hyperspectral remote sensing data has the characteristic of combining both image data and spectral data into one data set, each pixel of a hyperspectral image an entire spectrum (consisting of numerous contiguous, narrow spectral bands) is present. Compared with conventional multi-spectral remote sensing data, hyperspectral remote sensing data can be more useful for the identification and classification of surface Materials. In this paper, the author classified the coastal area using hyperspectral remote sensing data, and further more, succeeded in extraction of sand beach surface information related to bearing capacity characteristic.

高光谱遥感数据具有图像—光谱合一的特点，与传统的多光谱遥感数据相比，能够更好的分类与识别各类地物，本文主要利用高光谱遥感数据，实现海岸带分类，并且在此基础上实现沙滩表面承载特性信息的提取，主要内容分为以下三个部分：第一部分概要介绍了高光谱遥感技术。

Lanzhou University,Lanzhou,730000The difference between the spectral reflectance curves of healthy and diseased larch canopies is obvious.In this work,we chose the larch plantations as the study object.Firstly,we selected 14 larch canopy samples and measured their spectral reflectance and photosynthetic pigment contents.Then we selected 8 spectral parameters to set up a series of linear regression models.

以吉林省延边州敦化、和龙两市林场中健康的和遭受落叶松早落病侵害的人工落叶松林为调查对象，在对野外采集的14个落叶松冠层样本进行光谱测量及光合色素含量测量的基础上，选取8个对落叶松冠层光合色素含量变化反映敏感的光谱参数参与建立其光合色素含量的一元线性回归和多元逐步回归模型。

In other words, on the basis of known low space resolution multi-spectral image and high space resolution panchromatic spectral image, it will simulate to create high space resolution multi-spectral image.

针对这一应用目的，本文在对现有的定性定量指标分析的基础上，设计了一组适合本文的评价标准，就是在目视判读的基础上，采用平均梯度和小波能量分析融合影像和原始未降解的多光谱影像的空间分辨率差异，采用标准方差、标准偏差和协方差矩阵行列式值分析融合影像和原始未降解的多光谱影像的信息差别，采用均值、中值和归一化最小方差分析融合影像的光谱信息保持程度。

Estimation of spectral densities for single and multiple time series. Nonparametric estimation of spectral density, cross-spectral density, and coherency for stationary time series, real and complex spectrum techniques.

时间序列谱分析：单个和多个时间序列的谱密度估计，谱密度的非参数估计，交叉谱密度，静态时间序列的一致性，实时和复杂的谱技术，双频谱Bispectrum。

Mainly research results were as follows:(1)Proper scanning conditions which were used for establishing NIRS nondestructive detecting models were confirmed.The results of test indicated that proper scanning times was 1 times to one point;proper scanning manner was 2 times by 180°running to several points; the enactment of scanning parameters simply satisfied the condition that the spectral line of samples and the spectral line of contrast were tangent in conquest line;it can obtain the greatest prediction performance with the spectral data which were determined in an aphotic room absolutely.

具体的研究结果如下：(1)南果梨近红外透射光谱的适宜扫描方式为以果柄-果蒂为轴1 80°转动扫描2次、适宜的光谱扫描次数为单测点扫描一次、扫描参数的设定只要满足待测样品光谱曲线和参照物光谱曲线均在特征峰处相切于征服线即可，光谱测定的最佳环境条件为在完全遮光的房间内进行样品光谱的采集。

It is found that there are no obvious corresponding signals related to the Slichter modes claimed by Smylie (1992), Smylie et al.(1993) and Courtier et al.(2000) in the product spectral density estimates. Instead, it is found that there exist 8 common significant spectral peaks in the subtidal band in the product spectral density estimates of the SCG gravity data, which may be related to some unknown global geodynamical or geophysical effects. It is very encouraging that the central periods of three peaks of them are estimated accurately as 4.93438 ±0.00186h, 4.42734 ±0.001159h and 4.09269 ±0.00082h, respectively, and in significant accordance with the eigenperiod of the Slichter modes of the solid inner core expected theoretically by Smith (1976) with only differences of 0.4%,-1.4% and 1.0%, respectively.

初步分析结果表明，在积谱密度估计中没有Smylie(1992)，Smylie等(1993)和Courtier等(2000)发现的与内核平动振荡有关的共振信号，但存在与某些未知的全球地球物理或地球动力学效应有关的8个重要的明显公共谱峰，估计了在这些谱峰附近的重力共振参数，其中三个谱峰的中心周期与Smith(1976)理论预测的固体内核Slichter模的本征周期符合得非常好，二者之间的差异分别仅为0.4％，-1.4％和1.0％。

In sparkle discharge ,following conclusions could be reached:(1) overall spectral intensity in nitrogen is lower than in oxygen . When water is added, integrality light intensity is lower compared with the pure gas condition.(2) No matter it is nitrogen or oxygen, when water is added, syllabify three spectral lines of atomic H: Hα(656.3nm), Hβ(486.1nm), Hγ(434.0nm) could be seen. What is more, when water is added into oxygen, the spectral line of H atom becomes stronger.(3) When discharge in pure nitrogen, the light intensity falls with the increasing gas flow rate. While if water is added, the light intensity will rises with the increasing gas flow rate.(4) When discharging in pure oxygen, the light intensity rises with increasing gas flow rate. While if water is added, with increasing gas flow rate the light intensity initially will change as this:first rise, then saturate at about 140l/h, finally falls.

在火花放电中：(1)氮气的整体光谱强度要弱于氧气的整体光谱强度，加水时的整体光谱强度比纯气体中放电小很多；(2)无论所通为氮气或氧气，加水时可以清晰的看到Hα(656.3nm)，Hβ(486.1nm)，Hγ(434.0nm)三条氢原子的谱线，而且在氧气加水的情况下产生的H原子的谱线要强些；(3)纯氮气中放电时随着气流量的增大放电光谱的强度随之降低，氮气加水放电时随着气流量的增大放电光谱的强度随之升高；(4)氧气放电时，随着气流量的增大，放电光谱的强度随之升高，氧气加水中放电时随着气流量的增大，放电光谱的强度开始随之升高，在140l/h时的值最高，接着就开始下降。

One is to understand the Spectral Characteristic Curve; the other is to satisfy the conditions of similar analogy, which means that the spectral characteristics are similar between the studied area and the area for collecting standard spectral curve as well as the area for analogizing.

这一领域已有的研究工作主要集中在如下几个方面：①图像处理，包括以增强和提取成矿信息为目的的图像增强、图像变换和图像分类等；②地质解译；③遥感地面模式的研究；④数据融合；⑤遥感生物地球化学研究。

The tasseled cap transformation is a kind of linear transformation of the multi-spectral band,which can eliminate relative spectral response correlation of multi-spectral images and is of great importance for full-color image visualization and automatic feature extraction.

文中提出了IKONOS多光谱图像缨帽变换方法。缨帽变换是多光谱波段的一种线性变换，且该变换能消除多光谱图像的相对光谱响应相关性，并对全色图像可视化和自动特征提取都非常有用。

Spectral type is O ﹑ B ﹑ A dwarf star known as the blue dwarf star (such as Vega ﹑ Sirius), spectral type is F ﹑ G dwarf star known as the yellow dwarf star, spectral type as K and later the dwarf star called red dwarf star (such as the South Gate diethylamino star )...

光谱型为O﹑B﹑A的矮星称为蓝矮星﹐光谱型为F﹑G的矮星称为黄矮星﹐光谱型为K及更晚的矮星称为红矮星。。。。

The receding calculations and experiment analyses in this subject are built on the blood cast of pig tongue.

本研究课题的前期工作是采用猪舌血管铸型模拟人舌而进行的数值计算与实验分析。

"Each human infection constitutes an opportunity for genetic modification of the virus through reassortment, mutation, or both...."

&每一次人类的感染都暗藏着一次基因修改的机会，无论是通过病毒的整合、突变或者兼而有之。。。。&