OBJECTIVES

After reading this chapter you should be able to understand, explain, describe

• a brief overview of remote sensing history
• domains of information provided by remote sensing data
• different platforms used for remote sensing data acquisition
• active and passive sensors: their difference, and advantages and disadvantages
• the difference between imaging and nonimaging sensors
• features of some of the different satellite and sensor systems used for monitoring vegetation
• general steps required for processing digital satellite imagery.