Sputnik
From OpenBeacon Wiki
Contents |
Overview
Sputnik Tag
The Sputnik Tag is a standard OpenBeacon Tag with Tag sputnik firmware.
The tag periodically (randomized to reduce on-air collisions) transmits frames.
The frames are called SOAP-enc (Sputnik On-Air Protocol - encrypted) frames. Those frames are encrypted before transmission and feature a sequence number to protect against replay attacks.
Credits
The Sputnik base station hardware and software has been designed and developed by Brita Meriac and Milosch Meriac, with minor contributions by Harald Welte.
Sputnik Base Station
The Sputnik Base Stations are OpenBeacon Base Station 1.
The base stations receive packets from the tag and forward the raw, still encrypted packets via UDP over Ethernet. The UDP packet format is called SOEP-enc (Sputnik On-Ethernet Protocol - encrypted).
Credits
The Sputnik base station hardware and software has been designed and developed by Milosch Meriac.
Sputnik Aggregator
The aggregator receives the encrypted SOEP packets from all base stations. Furthermore, it decrypts those packets and re-transmits them to one or more destination IPs/Ports. The decrypted UDP frames are called SOEP-dec (SOEP - decrypted).
Credits
The Sputnik Aggregator has been developed by Andy Green.
Sputnik CPS Location Source
The Sputnik CPS Location Source receives SOEP-dec frames and converts them into CPS (Chaos Positioning System) XML Stanzas. Those stanzas are then streamed into the CPS Location Event Reflector (LER)
Credits
The Sputnik CPS Location Source has been developed by Hannes Mehnert and is written in the Dylan programming language.
CPS: Location Event Reflector
The location event reflector (LER) is a daemon receiving location data from Location Sources such as the Sputnik-LS.
It relays this information in XML format to clients who connect to its built-in http server (xml streaming over http).
Visualization systems and a web frontend can then access the location information.
Credits
The CPS LER has been developed by Hannes Mehnert and is written in the Dylan programming language.
