2) Spectral index
光谱指数
1.
Adopting the Friedmann-Robertson-Walker model,we present a new exact solution to Einstein s equation that describes the evolution of the cosmological chaotic inflation model,and calculate the spectral indices ns of the scalar density fluctuation and the gravitational wave spectral index ng.
采用Friedmann-Robertson-Walker模型,提出了一个新的描述宇宙浑沌暴涨模型演化的Einstein场方程解,并计算了标量密度涨落的光谱指数ns和引力波光谱指数ng,得到ns的值很好地符合宇宙背景观测卫星观测到的值。
2.
By analyzing the spectral index and its relative error, it confirms the spectral index S_R=R_(1600)/R_(820) as the characteristic parameters of the model, where R_(1600) and R_(820) are the reflectivities at 1600 nm and 820 nm.
在分析植被光谱特征与光谱和植被水分相关性的基础上,初步确定几个波段或波段组合为植被含水量的光谱指数。
3.
Based on the analysis of the measured spectra, four spectral indexes were defined to build up formulas for identification of the four items.
在光谱分析的基础上,首先建立了4种光谱指数,进而利用这4种光谱指数建立了水华、浮叶植物、沉水植物和水体的判别公式,并利用2006年10月水面实验测量的光谱数据训练得到了判别公式中的阈值。
3) spectral indices
光谱指数
1.
Retrieval winter wheat ground cover by short-wave infrared spectral indices in field and sensitivity analysis;
红外光谱指数反演大田冬小麦覆盖度及敏感性分析
2.
At leaf level,we analyzed the applicability of the spectral indices when applied to chlorophyll.
对目前提出的光谱指数用以提取叶片叶绿素含量的适应性进行了分析和评价。
3.
The objective of this paper is to determine the suitable MODIS spectral indices for monitoring growth status change during crop growing season.
利用多个时次的小麦地面光谱与相应的生理参量测量数据(140组),构建了常见宽波段植被指数形式的MODIS(中分辨率成像光谱仪)光谱指数。
4) improved index method
改进指数法
5) Modified fluorescence spectra
改进荧光光谱法
补充资料：改进
改变旧有情况，使有所进步：～工作ㄧ操作方法有待～。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条