.. _glossary:

=========
 Glossary
=========

.. glossary::
    :sorted:

    CubeSat
        A small satellite is made up of multiples of 10cm × 10cm × 10cm cubic units.

    OreSat
        PSAS's open source CubeSat. See https://www.oresat.org/

    PSAS
        Portland State Aerospace Society. A student aerospace group at Portland State University.
        See https://www.pdxaerospace.org/

    CFC
        Cirrus Flux Camera. The science payload for OreSat.

    SDR
        Software-Defined Radio. Radio communications that are traditionally implemented in hardware
        are instead implemented in software.

    C3
        Command, communication, and control card. It is the flight computer for OreSat.

    CAN
        Control Area Network. A message bus for embedded systems common in the automotive industry.

    CANopen
        A communication protocol and device profile specification for a CAN bus defined by CAN in
        Automation. More info at https://can-cia.org/

    OLAF
        OreSat Linux Application Framework. The pythonic CANopen application framework for all
        OreSat Linux cards. See https://github.com/oresat/oresat-olaf

    OD
        Object Dictionary. The main data structure of a CANopen node.

    OPD
        OreSat Power Domain. Allows the C3 to turn other cards on or off.

    UniClOGS
        University Class Open Ground Station. The ground station for OreSat.
        See https://www.uniclogs.org/

    HGS
        Handheld Ground Station. Ground part of the OreSat Live system.

    EDL
        Engineering Data Link. The main communication data link between OreSat and UniClOGS used
        for commanding OreSat and uploading/downloading files to/from OreSat.

    SatNOGS
        A open source global network of satellite ground stations. See https://satnogs.org/

    FlatSat
        The development environment for OreSat. The dev OreSat is layout flat on a table, hence
        the name FlatSat.

    FlatClOGS
        A development environment for UniClOGS software connected to FlatSat.

    OreFlat
        FlatSat and FlatClOGS together. A full HIL satellite and ground station for integration
        and testing.

    Telecommand
        A command message sent to a satellite.

    Telemetry
        Health and status information from a satellite.

    OTA
        Over the Air. Any type of wireless transmission.

    SDO
        Service Data Object. A sequence of CANopen messages for a node to read or write a value to
        another node OD.

    PDO
        Process Data Object. A broadcast type CANopen message.

    EMCY
        Emergency Object. A broadcast CANopen message to mark an error on a node, used for
        diagnostics.

    OreSat Live
        The outreach payload for OreSat that stream live video of earth to an HGS.

    HIL
        Hardware-in-the-loop. A test bench setup for testing and validating software with the real
        hardware.

    Octet
        A unit of 8-bits. In communications, it is common to the unit octet, as the unit byte has
        historically been platform-dependent, while an octet has always been 8-bits.

    CCSDS
        Consultative Committee for Space Data System. A committee of governmental space-agencies
        to discuss and develop standards for space data and information systems.
        See https://public.ccsds.org/default.aspx

    USLP
        Unified Space Data Link Protocol. A CCSDS communications protocol to be used by space
        missions for space-to-ground or space-to-space communications links.

    CFDP
        CCSDS File Delivery Protocol. A CCSDS file transfer protocol to be used by space missions.

    XTCE
        XML Telemetric and Command Exchange. An XML-based file for defining a spacecraft's
        telemetry and telecommand data format.

    ECSS
        European Cooperation for Space Standardization. Calibration of the ESA (European Space
        Agency), the European space industries, and several space agencies, to develop and
        maintain space mission standards for European space missions.

    SCET
        Spacecraft Elapsed Time.

    TPDO
        Transmit PDO. A TPDO is broadcast type message sent from a node to be consumed by any other
        node.

    RPDO
        Receive PDO. A RPDO is broadcast type message to be consumed by one node that can be sent
        from any other node.

    COB-ID
        Communication Object Identifier. Used to identify a CANopen messages.

    DxWiFi
        Long distance WiFi.