Meteo-ADSB

Meteo-ADSB is a web application that visualizes meteorological data collected from aircraft. The application displays various charts and a map to provide insights into wind speed, temperature, and pressure at different altitudes.

Features

• Wind Speed vs Altitude: Displays wind speed data against altitude.
• Temperature vs Altitude: Displays temperature data against altitude with an approximated lapse rate line.
• Altitude vs Pressure: Displays pressure data against altitude in hPa (hectopascals).
• Map Visualization: Displays aircraft positions on a map with unique colors for each aircraft.

Installation

1. Clone the repository:

   git clone https://github.com/carbform/meteo_adsb.git
   cd meteo_adsb

Usage

Bash Script

To run the bash script, use the following command:

./meteo_adsb.sh [-d] [-h]

Options:

• -d : Run in demo mode. JSON files will not be copied.
• -h : Show help message and exit.

Python Script

To run the Python script, use the following command:

python3 meteo_adsb.py [-d] [-r] [-i]

Options:

• -d : Run in demo mode. JSON files will not be copied.
• -r : Prompt for remote setup details.
• -i : Interactive mode to prompt for setup details.

Example

To run the script in demo mode:

./meteo_adsb.sh -d

or

python3 meteo_adsb.py -d

Configuration

The configuration is stored in a JSON file (config.json for the bash script and meteo_adsb_config.json for the Python script). The script will prompt for necessary details if they are not already configured.

Accessing the Visualization

Once the server is started, you can access the visualization in your web browser at http://<your_local_ip>:8000.

Methodology

Lapse Rate Calculation

The lapse rate is calculated as the rate of change of temperature with respect to altitude:

$$ Lapse Rate (\lambda) = \frac{\Delta T}{\Delta Z} $$

where:

• $$( \Delta T )$$ is the change in temperature (°C)
• $$( \Delta Z )$$ is the change in altitude (km)

Pressure Calculation

The pressure at a given altitude is calculated using the barometric formula. For altitudes up to 11,000 meters:

$$ P = P_{b} \left(1 + \frac{\lambda \cdot h}{T_b}\right)^{\frac{-g}{\lambda \cdot R}} $$

For altitudes above 11,000 meters:

$$ P = P_{11km} \cdot \exp\left(\frac{-g \cdot (h - 11000)}{R \cdot T_{11km}}\right) $$

where:

• $$( P )$$ is the pressure at altitude ( h ) (Pa)
• $$( P_{b} )$$ is the sea level standard atmospheric pressure (101325 Pa)
• $$( \lambda )$$ is the lapse rate (°C/m)
• $$( h )$$ is the altitude (m)
• $$( T_{b} )$$ is the sea level standard temperature (288.15 K)
• $$( g )$$ is the standard gravity (9.80665 m/s²)
• $$( R )$$ is the universal gas constant for air (287.05 J/(kg·K))
• $$( P_{11km} )$$ is the pressure at 11,000 meters
• $$( T_{11km} )$$ is the temperature at 11,000 meters

Contributing

Contributions are welcome! Please fork the repository and submit a pull request with your changes.

License

This project is licensed under the GPL V3 License. See the LICENSE file for details.

Acknowledgements

• OpenStreetMap for map tiles.
• Chart.js for charting library.
• Leaflet for interactive maps.
• SweetAlert2 for alert messages.