How High‑Precision Positioning Enables Lane‑Level Navigation: Techniques and Roadmap

This article analyzes the evolution of high‑precision positioning technologies—from basic GNSS and sensor‑based dead‑reckoning to multi‑sensor fusion, RTK, visual SLAM, and tightly‑coupled SLAM—explaining how they support lane‑level navigation and advanced driver assistance on both mobile and vehicle platforms.

RTK GNSSSensor Fusionautonomous driving

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How High‑Precision Positioning Enables Lane‑Level Navigation: Techniques and Roadmap

Didi Tech

Sep 10, 2020 · Artificial Intelligence

Technical Overview of DiDi's AR Indoor Navigation System

DiDi's AR indoor navigation system addresses GPS unreliability in large indoor venues by using SfM-based 3D reconstruction, robust visual localization with magnetometer/GNSS priors, and sensor fusion with pedestrian dead‑reckoning and deep‑learning heading estimation, cutting passenger pick‑up time by up to 25 % across dozens of airports and malls.

3D reconstructionAR navigationSensor Fusion

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Technical Overview of DiDi's AR Indoor Navigation System