PAR is usually measured by a single band sensor and can also be calculated by multispectraldata.
PAR通常由单波段的PAR传感器直接测量，也可以由多光谱数据计算。
2
The combined use of principal component transform and IHS color transform provides a powerful information extraction tool for multispectraldata processing.
主成分变换和彩色变换相结合，为多波段数据信息提取提供了一种新的方法。
3
Image fusion based on the linear relationship between panchromatic and multispectraldata is feasible and widely used for the fusion of remotely sensed images.