CUAVA Beacon Decoder

This repository contains the application needed to parse the beacons from the University of Sydney's satellites CUAVA-2 and Waratah Seed-1.

Additionally we include the gnu-radio flowgraph to receive the raw beacons and an example of a raw beacon recorded directly after the decimating low-pass filter.

Application

The beacon decoder is written in Rust. To run the parser you'll need to:

• Clone this repo git clone https://github.com/Cube-OS/cuava-beacon-decoder
• Install Rust if needed
• Change to the directory cd cuava-beacon-decoder

Run the parser

The parser can be used standalone by inputting a file with demodulated and decoded raw beacon data or together with the flowgraph, which requires the flowgraph to be started first.

• Run from the directory

cargo run

• Build and run from anywhere

cargo build --release
cp target/release/cuava-beacon-decoder PATH/TO/DESTINATION
cd PATH/TO/DESTINATION
./cuava-beacon-decoder

The following options are available:

./cuava-beacon-decoder -i INPUT-FILE -o OUTPUT-FILE -p PORT

The -i INPUT-FILE option enables the standalone use for parsing pre-recorded beacons.

The standard port is 3210.

The JSON output is directed to a file ./beacon.txt or any file specified with -o OUTPUT-FILE.

Example

An example of a raw beacon is included in this repository and can be tested using

cargo run --release -- -i demodulated-beacon.raw

Transmission

Frequency: 400.65MHz

Baudrate: 1k2

Modulation: BPSK-G3RUH

The flowgraph has been built with gnu-radio 3.9.6 and gr-satellites 2.3.2 and has been tested with the Ettus Research B200/B210 SDRs.