This app features super-accurate GPS, and I can't figure out how it works | Ars Technica
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New instrument CHC x6 GPS receiver GNSS RTK measurement instrument high precision rtk (Base station and mobile station)|Theodolites| - AliExpress
9P Mobile End GPS Positioning Module High Precision For V5+ Nano X7 (Pro) Nora | eBay
Measuring GNSS accuracy on Android devices | by Sean Barbeau | Medium
GPS will be accurate within one foot in some phones next year - The Verge
GPS Distance Accuracy Test: Smartphone Apps vs. Dedicated GPS - Singletracks Mountain Bike News
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How accurate is mobile phone GPS? - Quora
How to Improve GPS Accuracy on Android - TechCult
Galileo Hits the Spot: Testing GNSS Dual Frequency with Smartphones - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design
GPS.gov: GPS Accuracy
Amazon Location Service enables Position Filtering to reduce position jitter and cost of tracking. | Front-End Web & Mobile