The Landsat 7 Mission Objective is to provide timely, high quality visible and infrared images of all landmass and near coastal areas on the Earth, continually refreshing an existing Landsat database. Data input into the system will be sufficiently consistent with the current data in the database in terms of acquisition geometry, calibration, coverage,and spectral characteristics to allow comparison for global and regional change detection and characterization. The Landsat 7 project will continue to make Landsat data available for U.S. civil, national security, and private sector use as well as academic, foreign, and commercial uses. Another goal of the project is to expand the uses of such data. Landsat 7 is to have a design lifetime of five years.

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