[TriLUG] Linux Powers Perseverance

[Roger W. Broseus via TriLUG]

Perseverance and Linux:

    "You may be cheered to hear that various parts of the rover are powered by
    not just the usual VxWorks but also Linux – such as its autonomous
    helicopter drone and the computer connected to the EDL cameras [technical
    briefing PDF
    <https://www-robotics.jpl.nasa.gov/publications/Reg_Willson/Maki2020_Article_TheMars2020EngineeringCamerasA.pdf>].
    This camera system runs a customized version of the open-source kernel to
    max out the data transfer rate between the camera sensors and solid-state
    storage, and runs FFMPEG to process and compress the imagery. The EDL
    computer also handles the microphone."

    "'The JPL-developed custom software application layer is comprised of
    approximately 20,000 lines of code,' according to the above technical
    briefing. 'All other functionality is provided by open-source software
    projects. The total software storage footprint is less than 100 MB. During
    the seven-minute EDL sequence, the EDLCAM system is expected to generate
    and store more than 40 GB of camera and microphone data.'"

Take care in responding - cross posted for interest of two groups.

Source: The Register, excerpted from "NASA sends nuclear tank 293 million 
miles to Mars, misses landing spot by just five metres. Now watch its video."

https://www.theregister.com/2021/02/23/perseverance_landing_video/

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Roger W. Broseus - Linux User
     Email: RogerB at bronord.com
     Web Site: www.bronord.com