Collect data from satellites for scientific research in weather forecasting
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Join our campaign starting 17th March 2022. Install the CAMALIOT app and start logging data from satellites in the background. Check out the prizes to be won here.

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The Global Navigation Satellite System (GNSS) is a set of satellites that orbit the Earth.
These GNSS satellites provide valuable information to many different location-based applications from the satnav in your car to flying a plane. But we can also use the data for scientific research.
We developed the CAMALIOT app to gather data from these satellites, taking advantage of new developments in mobile technology to collect and access the raw GNSS data from Android phones.
All the data are gathered by individuals like you. You don't have to be a scientist, you just need to have access to an Andriod mobile phone with your GPS turned on.
In return, you are helping to build better weather forecasting models, and there is a chance to win prizes at the end of the campaign.
As the GNSS satellite signals are received in Earth, they are modified by the amount of water vapour in the atmosphere.
We can use these modified signals in combination with machine learning algorithms to improve weather forecasting, in particular, of rainfall.
By using crowd-sourced GNSS data from many mobile phones around the world, we hope to create better inputs to weather prediction models so that local rainfall events are forecast more accurately.
We will also use the GNSS data to improve predictions of space weather, e.g., the types of events that can disturb our communication systems due to solar flares.
Get involved by collecting GNSS data through the CAMALIOT app. The campaign will run between 17th March and 31st July 2022. See below for more information about the prizes you can win!


1. Click on START LOGGING to collect the data from satellites. If possible, place the phone somewhere with a clear view of the sky.
2. Click on STOP LOGGING to stop the session.
3. Upload the session to the server and then repeat to log and upload more data.
4. Check the data uploaded and leaderboard

The CAMALIOT Campaign Prizes

  • >> CAMALIOT campaign ends on 31 July 2022
  • >> Prize draw at the end of the campaign

    • >> The more measurements uploaded, the higher chances of winning.
    • >> Top prize: A dual frequency Android mobile phone
    • >> Other prizes: Amazon vouchers valued between €50 to €200 and goodie boxes with merchandise from ESA, CAMALIOT, VITO and/or Sinergise.
    • >> See Official Rules
  • >> Apply for access to ESA’s GSSC Now Preview Program. The First 50 people will get access on a first come first served basis.