Beskrivning : Landsat 9 is a partnership between the National Aeronautics and Space Administration (NASA) and the U.S. Geological Survey (USGS) and will continue the Landsat program‚
Critical role of repeat global observations for monitoring, understanding, and managing Earth natural resources.
NASA is responsible for the space segment (instruments and spacecraft/observatory), mission integration, launch, and on-orbit checkout. NASA-managed satellite builds have a mission lifecycle (see the image below) that is divided into incremental phases. Phase A is concept and technology development; Phase B is preliminary design and technology completion; Phase C is final design and fabrication; Phase D is system assembly, integration/testing, and launch readiness; Phase E starts after on-orbit operational checkout and ends at the mission`s operational end.
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