Optical and Active Satellite Sensors used in Forestry

Abstract

Satellite images are taken with a wide variety of sensors placed on platforms at altitudes between 400 and 950 km. They are characterized by a number of elements specific to each satellite program amongst which the most important are the resolution (spatial, spectral, radiometric, temporal), setting size, applications where records can be used, and the image cost. This paper presents aspects of the main current satellite sensors in orbit capturing satellite images used in forestry too.