GNSS/UWB/IMU融合による屋内外シームレス歩行者測位:EKF・FGO・PFの比較
Seamless Outdoor-Indoor Pedestrian Positioning System with GNSS/UWB/IMU Fusion: A Comparison of EKF, FGO, and PF
GNSS・UWB・IMUを融合し、屋内外をシームレスに歩行者測位する枠組みを構築。EKF・因子グラフ最適化・パーティクルフィルタの3手法を比較し、ESKFが最も安定した性能を示した。
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著者: Jiaqiang Zhang, Xianjia Yu, Sier Ha, Paola Torrico Moron, Sahar Salimpour, Farhad Kerama, Haizhou Zhang, Tomi Westerlund
分類: cs.RO
原文アブストラクト
Accurate and continuous pedestrian positioning across outdoor-indoor environments remains challenging because GNSS, UWB, and inertial PDR are complementary yet individually fragile under signal blockage, multipath, and drift. This paper presents a unified GNSS/UWB/IMU fusion framework for seamless pedestrian localization and provides a controlled comparison of three probabilistic back-ends: an error-state extended Kalman filter, sliding-window factor graph optimization, and a particle filter. The system uses chest-mounted IMU-based PDR as the motion backbone and integrates absolute updates from GNSS outdoors and UWB indoors. To enhance transition robustness and mitigate urban GNSS degradation, we introduce a lightweight map-based feasibility constraint derived from OpenStreetMap building footprints, treating most building interiors as non-navigable while allowing motion inside a designated UWB-instrumented building. The framework is implemented in ROS 2 and runs in real time on a wearable platform, with visualization in Foxglove. We evaluate three scenarios: indoor (UWB+PDR), outdoor (GNSS+PDR), and seamless outdoor-indoor (GNSS+UWB+PDR). Results show that the ESKF provides the most consistent overall performance in our implementation.
関連論文
- 平面アレイUWB/GPS/IMU/気圧センサ統合による高精度クライミングロボット測位測位・センサフュージョン
- 屋内施設におけるドローン測位のための自己修正型センサフュージョン測位・センサフュージョン
- OpenHPS:オープンソースのハイブリッド測位システム測位・センサフュージョン
