Sounding effect of laser scanning imaging in earth observation

The overlap regression of instantaneous field-of-view (IFOV) arising from d ynamic laser scanning sounding was put forth and a concept of dynamic overl ap factor,which describes the dynamic sounding effect of scanning laser, wa s presented. The relation between the dynamic overlap factor and operation parameters, system specifications and its influence on the sounding effect were analyzed in detail. Some special examples were discussed to explain th e obtained results. Finally some suggestions were given for designing laser scanning imaging system with better sounding effect in earth observation.