This paper presents a framework addressing the challenge of global localization in autonomous mobile robotics by integrating LiDAR-based descriptors and Wi-Fi fingerprinting in a pre-mapped environment. This is motivated by the increasing demand for reliable localization in complex scenarios, such as urban areas or underground mines, requiring robust systems able to overcome limitations faced by traditional Global Navigation Satellite System (GNSS)-based localization methods. By leveraging the complementary strengths of LiDAR and Wi-Fi sensors used to generate predictions and evaluate the confidence of each prediction as an indicator of potential degradation, we propose a redundancy-based approach that enhances the system's overall robustness and accuracy. The proposed framework allows independent operation of the LiDAR and Wi-Fi sensors, ensuring system redundancy. By combining the predictions while considering their confidence levels, we achieve enhanced and consistent performance in localization tasks.
P3-LOAM: PPP/LiDAR Loosely Coupled SLAM with Accurate Covariance Estimation and Robust RAIM in Urban Canyon Environment
Shanghai Jiao Tong University（上海交通大学）
基于激光雷达（LiDAR）的同时定位与地图构建（SLAM）技术在自动驾驶领域引起了越来越多的关注。然而，LiDAR-SLAM遭受累积误差，这可以通过全球导航卫星系统（GNSS）显著减轻。精密单点定位（PPP）是一种不依赖于基站的高精度GNSS工作模式，在无人系统中越来越受欢迎。针对LiDAR-SLAM和PPP这两种技术的特点，提出了一种将LiDAR-SLAM和PPP相结合的SLAM系统P3-LOAM（PPP based LiDAR Odometry and Mapping）。为了更好地集成，我们通过使用奇异值分解（SVD）雅可比模型推导LiDAR-SLAM定位协方差，因为SVD提供了迭代最近点（ICP）的显式解析解，这是LiDAR-SLAM中的关键问题。然后提出了一种新的方法来评估估计的LiDAR-SLAM协方差。此外，为了提高GNSS在城市峡谷环境中的可靠性，我们开发了一种LiDAR-SLAM辅助GNSS接收机自主完整性监测（RAIM）算法。最后，我们验证P $^3$ -LOAM与UrbanNav，一个具有挑战性的公共数据集在城市峡谷环境。综合测试结果表明，P3-LOAM在精度和可用性方面优于单点定位（SPP）、PPP、LeGO-LOAM、SPP-LOAM以及UrbanNav出版商提出的松耦合导航系统等基准。
LiDAR-Inertial Odometry Based on Extended Kalman Filter
Institute of Innovation for Future Society, Nagoya University（名古屋大学未来社会创新研究所）；LOCT Co., Ltd.（LOCT有限公司）；Graduate School of Science and Technology, University of Tsukuba（筑波大学理工学研究科）
Multi-robot Systems Group, Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University in Prague（布拉格捷克技术大学电气工程学院控制学系多机器人系统组）；Turku Intelligent Embedded and Robotic Systems (TIERS) Lab, University of Turku（图尔库大学智能嵌入式与机器人系统实验室）
Four years of multi-modal odometry and mapping on the rail vehicles
GNSS Research Center, Wuhan University（武汉大学卫星导航定位技术研究中心）；School of Geodesy and Geomatics, Wuhan University（武汉大学测绘学院）；Hefei power supply section, China Railway Shanghai bureau CO., LTD（中国铁路上海局集团有限公司合肥供电段）
A Distributed Multi-UGV Exploration Framework With Loop-Aware Planning and Descriptor-Aided Localization in Resource-Limited Environments
School of Mechanical Engineering, Beijing Institute of Technology（北京理工大学机械与车辆学院）；China North Artificial Intelligence & Innovation Research Institute, Collective Intelligence & Collaboration Laboratory (CIC)（中国北方人工智能与创新研究院集体智能与协作实验室）；Zhengzhou Intelligent Technology Research Institute, Beijing Institute of Technology（北京理工大学郑州智能科技研究院）
The Road Ahead in Autonomous Driving: The KITScenes Multimodal Dataset
FZI Research Center for Information Technology（弗劳恩霍夫信息技术研究中心）；Karlsruhe Institute of Technology（卡尔斯鲁厄理工学院）；University Charles III of Madrid（马德里第三大学）；Delft University of Technology（代尔夫特理工大学）
