Page Comparison

...

• Modular

• Decouple different radio link

• One radio link only dedicated to one specific use case

• Simplicity

• Lightweight communication protocol

• Portability

• Omni-directional (Competition requires no human operator to operate the ground station antenna)

System Architecture:

Note: This communication link aims to ensure reliable communication at all times and to contain only limited critical information (Control input and GPS coordinate output) under limited bandwidth.

...

• Available SIK Radio Configuration Tool

• Handshake before transmission

• Custom lightweight Protocol: Device ID + Message Type + payload

• Support MAX 127 device using the communication link(Unique Device ID)

• Non-blocking UART listener

• Timeout detection plus device reset

Future Roadmap

Antenna:

• Advertise on the SILK Radio, patch antenna can provide significant range improvement

  • https://www.l-com.com/wireless-antenna-900-mhz-8-dbi-flat-patch-antenna-4ft-sma-male-connector

...

Radio Hardware:

• https://www.digi.com/products/embedded-systems/digi-xbee/digi-xbee-gateways/digi-xbee-modems/xtend-900mhz-rf-modems Using Off-the-shelf RF modems designed for long range use cases

• https://holybro.com/products/microhard-radio?variant=42522025590973 another suggested off-the-shelf hardware

Note: these hardware are ideal after the whole communication system is solidified and the limitation of the current radio system is observed and cannot solved easily. Because the cost of replacing a radio like this is extremely high.

Radio Software:

• TCP/IP through UART using ROS 2 middleware

...

• 2.4/5.8 GHz for High data rate Middle Range Communication (additional for higher bandwidth not critical for rover communication system)

  • Extended Radio Status Information

  • 2 x Video Feed for Driver Control

...