2012出版的,EarthobservationisthefieldofscienceconcernedwiththeproblemofmonitoringandmodelingtheprocessesontheEarthsurfaceandtheirinteractionwiththeatmosphere.TheEarthiscontinuouslymonitoredwithadvancedopticalandradarsensors.Theimagesareanalyzedandprocessedtodeliverusefulproductstoindividua