ESA - Onboard Computer and Data Handling - Overview of the spacecraft onboard command and control bus

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Avionics Data Handling

Architectures of Onboard Data Systems Dependability

Onboard Computers and related modules

Onboard Computers Onboard Storage Remote Terminal Units Telemetry & Telecommand

Building Blocks

Microprocessors Microcontrollers IP Cores Systems on Chip (SoC)

Onboard Communication and Interfaces

Overview Communications

Mil-STD-1553 CAN - Controller Area Network Bus SpaceWire Discrete Interfaces I2C SPI - Serial Peripheral Interconnect Digital Sensor Bus Wireless network technologies for ground and onboard harness reduction

Testing and Benchmarking

RASTA - The Avionics Testbench MIL-STD-1553 Testbench SSIART - Smart Sensor Inter-Agencies Reference Testbench Venus Express Mock-up

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Overview of the spacecraft onboard command and control bus

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Mars Express Avionics Test Bench highlighting the inter-unit electrical harnesses. Technology developments are required in order to reduce their mass and complexity by using multiplexing or potentially wireless techniques.

Credits: EADS/Astrium (F).

Last update: 21 March 2012

More information

General characteristics of a spacecraft data bus Future Trends in Onboard Bus Use ECSS standardization Background