To determine the spatial resolutions necessary for specific types of analyses and requirements, it is appropriate to examine the sizes, densities, and contrasts of features that will eventually be studied. Indeed, the level of detail for an investigation is primarily a joint function of spatial and spectral resolution. Multispectral and multisensor resolutions are also important; however, these parameters are not as critical as spatial resolution. Thus, the determination of the needed spatial resolutions for interpretations is a function of the analytical requirements for the eventual application. A variety of interpretation requirements ranging from site generalization to item-specific identification exist for the reconnaissance communities.