What is it about?
Until 2018, only professional GPS (GNSS) could receive signals in double frequency, which allowed them to arrive at theoretically millimetric accuracies, while the most commonly used GPS (GNSS), such as those present in mobile phones used only code measurements and therefore hardly fell below 10 meters of approximation. In 2018 Xiaomi launches the Mi8 (and in 2019 the Mi9) that can receive signals in double frequency. How much accuracy can you get?
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Why is it important?
It is one of the first experiments (if not the first) in which it is possible to use the GPS/GNSS receiver inside a mobile phone differentiating it with the double frequency as is normally done with receivers of geodetic class. Is this the beginning of a new era in positioning?
Perspectives
The results show that decimetric accuracy can be achieved, impossible with a mobile phone until just over a year ago, this opens up many more possibilities for research and application.
Professor Valerio Baiocchi
Universita degli Studi di Roma La Sapienza
Read the Original
This page is a summary of: Assessment of Dual Frequency GNSS Observations from a Xiaomi Mi 8 Android Smartphone and Positioning Performance Analysis, Electronics, January 2019, MDPI AG,
DOI: 10.3390/electronics8010091.
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