Table 5.
Advantages and disadvantages of data transfer types.
| Advantages | Disadvantages | |
|---|---|---|
| MIL-STD-1553b | Considerable flight heritage | No remote control when |
| Deterministic behavior | data is transmitted | |
| Established spacecraft | Bus central control by Bus | |
| standards | Controller node | |
| Galvanic isolation of nodes. | Max. data rate of 1 Mbit/s | |
| Provision for redundant bus. | ||
| CANbus | ECSS standard for CANopen | Max. data rate of 3.7 Mbit/s |
| Large terrestrial knowledge base | ||
| Very low resource requirements | ||
| Ability to meet deterministic timing constraints | ||
| In-built error capabilities | ||
| SpaceWire | Established flight heritage | Multiple competing |
| Developed specifically for space | SpaceWire protocols | |
| environment | Hardware can be expensive | |
| Capable of large data rates | ||
| Capable of deterministic behavior | ||
| Flexible, scalable and robust | ||
| SSI | Differential Signaling | Max. data rate 10 Mbit/s |
| Good noise immunity | No higher level networking features | |
| Capable of deterministic behavior | ||
| Time-Triggered Bus | Deterministic behavior | No flight heritage |
| High data rates | Limited use | |
| Reliable and robust | Small number of component suppliers | |
| Firewire | High data rates | Limited flight heritage |
| Military and Aerospace Firewire standard | Limited cable length | |
| 8b10b encoding | ||
| Low Voltage Differential Signaling | ||
| Deterministic behavior | ||
| TTE | Ability to send time/event | Very limited flight heritage |
| triggered messages | No ECSS standard yet | |
| Flexible and scalable network topologies | ||
| High data rates | ||
| Deterministic behavior |