Remote Sensing Satellites and Airborne Sensors
To develop an automated satellite image understanding system, the properties of satellite images should be known in advance. Therefore, this chapter introduces various remote sensing satellites and airborne systems. In almost all cases, the sensors on these satellites and airborne systems are called by the same name as the satellite or the airborne program. We follow the same convention. The remote sensing satellites (sensors) we consider are Landsat, SPOT, IRS, AVHRR, Ikonos, Quickbird, FORMOSAT, CARTOSAT, Worldview, Alos, and Geoeye; the aerial sensors (programs) we consider are Daedalus, AVIRIS, HYDICE, and DAIS 7915. Wherever possible, we give a brief historical development of the sensor family with the operation dates, resolution, and revisit interval. We also give the spectral properties of the latest sensor for each family. We tabulate this information as a sensor selection guide. At the last section, we summarize and compare the properties of these sensors and their usage through time to give a brief information to the potential user.