• Mission Wide

    • Landsat 7 is a Survey Mission. Although users will have some input into scheduled scenes, the vast majority of data will be collected in a survey mode. The concept is to refresh a global archive of scenes periodically. Users can access this archive and place orders on recent scenes of any land area in the world.

    • Landsat 7 will produce much more data than past/current Landsats. The system goal is an average of 250 scenes each day.

    • Landsat 7 will be run as a commercial "cost neutral" venture, selling its data on a "cost-to-fulfill" basis.

  • Operationally

    • We will be using TCP/IP as a transport protocol for all housekeeping data instead of the traditional NASCOM 4800 bit blocks. This means we can get rid of those pesky Front End Processors most other MOCs have. The Housekeeping data stream may enter the workstation directly. Welcome to the 90's.

    • All housekeeping data will be processed and trended within the MOC. In addition, all command loads and science scheduling will take place within the MOC.

    • Flight Dynamics Functions (Ephemeris generation, Maneuver planning, Planning Aid generation, etc.) will be performed by the FOT in the MOC using FDF provided hardware and software. FDF personnel will support operations during launch and checkout, and later on in the mission during maneuvers.

  • Spacecraft

    • Landsat 7 has a 378 Gigabit Solid State Recorder. Need we say more?

    • The ETM+ puts out data at a rate of 150 Megabits each second. Hence the huge recorder.

  • Misc.

    • L7 was a term in the '50s used to describe something that was "square".

    • There is an all female punk/rock band called L7.


    Go back to the home page.


    Please send comments to Tom Cooke at

    thomas.cooke@gsfc.nasa.gov

    This page was last updated on June 25, 1997.