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About the application:

The purpose of GNSS Compare is to create the life of developers and researchers easier. It’s an simple to use and simple to extend Android-based framework for calculating the Position, Velocity and Time (PVT) based on the raw GNSS measurements. GNSS Compare is the winning Android device application developed by the Galfins Squad (https://gnss-compare.readthedocs.io/en/latest/team.html) as part of the internal European Place Agency (ESA) tournament called Galileo Phone Apk Challenge introduced in October/November 2017. Furthermore, the tournament was supported by the European Commission(EC) and European GNSS Agency(GSA). The Challenge was about creating a phone application, which will let the player to select which satellite constellation to use for PVT estimation. The aim was to increase the awareness about the European Union’s Galileo satellite navigation programme and also to let players from common public to compare the performance of Galileo signals with the performance from another global satellite navigation constellations. The current features of GNSS Compare contain: - Open-source code on github: https://github.com/TheGalfins/GNSS_Compare - Online documentation: https://gnss-compare.readthedocs.io - Modular tool framework for extending GNSS Compare’s PVT algorithms - Supported GNSS constellations: Galileo only, GPS only, Galileo&GPS combined - Help for dual frequency receivers - Accessible PVT estimators: Weighted Least Squares, Extended Kalman Filter - Data logging formats: Easy Logger (UTC timestamp, X, Y, Z), NMEA (UTC timestamp, lat, lon, alt, CN0), Raw GNSS measurements (Google’s GnssLogger format) - note: all calculations are initialized with phone's FINE location Please note that you need Android device 7.0+ to run the application. Also, please note that not all Android device 7.0+ phones help the Galileo Satellite System. The list of Galileo compatible phones can be found here: http://galileognss.eu/is-your-phone-using-galileo/. So far we’ve been testing the application on: - Samsung Galaxy S8 - Samsung Galaxy S8+ - Xiaomi MI8 If you wish to be kept up to date with our updates, you can sign up to our newsletter: https://goo.gl/forms/S0J0Kp4W5jWZYJCm1 Acknowledgements: Acknowledgements: GNSS Compare’s developers would like to thank the European Place Agency for the continuous help throughout the development of this application. Especially we would like to mention the ESA employees that shared their experience and knowledge regarding the Dual-Frequency aspects: Paolo Crosta, Nityaporn Sirikan, Gaetano Galluzzo, Paolo Zoccarato, and Tim Watterton.