The ionosphere, a layer of weakly ionized plasma extending above Earth, has a significant impact on Global Satellite Navigation System (GNSS) signals, causing errors in navigation. Traditional ground-based GNSS stations provide crucial data but have limitations in coverage. A groundbreaking study demonstrates that millions of Android phones can help fill the gaps and improve ionospheric mapping accuracy. By utilizing the sensors in smartphones, researchers were able to double the measurement coverage, revealing features like plasma bubbles and solar storm effects. This research showcases the potential of using a distributed network of smartphones as a powerful scientific tool for monitoring Earth, revolutionizing space-weather operational products and location accuracy.
https://www.nature.com/articles/s41586-024-08072-x