Glossary

Baud Rate

The speed of messages sent over a communications bus. It is not directly linked but typically infers the interval that messages are sent or resent in a protocol.

C3

Command, communication, and control board. See https://github.com/oresat/oresat-c3

CAN

Control area network. A message bus for embedded systems.

CAN ID

CAN Identifier. This is the 11-bit CAN message identifier which is at the beginning of every CAN message on the bus.

CANopen

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

CFC

Cirrus Flux Camera. One of OreSat1 payloads and a Linux board.

COB ID

Communication object identifier.

CubeSat

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

Daemon

A long running process on Linux, which runs in the background.

DLC

Data Length Code. The operational code dictating the size of the data frame.

EDS

Electronic Data Sheet. This is an INI style or XML style formatted file.

MTU

Maximum Transmission Unit. The maximum size of a packet. In context of this application, the MTU of a CAN packet is 108 bytes for a maximum-data-frame size of 64 bits (8 bytes).

NCurses

New Curses. An application programming interface for manipulating the standard terminal. Used for making terminal-based applications without the need for a GUI.

OLM

OreSat Linux Manager. The front end daemon for all OreSat Linux boards. It converts CANopen message into DBus messages and vice versa. See https://github.com/oresat/oresat-linux-manager

OreSat

PSAS’s open source CubeSat project. See their homepage for more details.

OreSat0

A 1U cube-satellite made and maintained by OreSat.

OreSat1:

A 2U cube-satellite made and maintained by OreSat.

PDO

Process Data Object. Inputs and outputs. Values of type rotational speed, voltage, frequency, electric current, etc.

PSAS

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

SDO

Service Data Object. Configuration settings, possibly node ID, baud rate, offset, gain, etc.

SDR

Software Define Radio. Radio communications that are traditionally implemented in hardware are instead implemented in software.