Junlong Cheng , Xiaohong Zhang , Feng Zhu , Jie Hu , Desheng Zhuo , Mohamed Freeshah
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引用次数: 0
Abstract
Continuous and accurate positioning is one of the critical requirements for established and emerging unmanned systems. Although the GNSS/IMU integration has become a widely-used navigation system, its performance is heavily dominated by GNSS. The dramatical accumulated error of IMU in GNSS outage and wrong updates results by GNSS outliers will influence the reliability of the integration system. In this work, we use light detection and ranging (LiDAR) to enhance the performance of the existing GNSS/IMU integration, where the raw measurements of three sensors are tightly integrated. The raw measurements of LiDAR are abstracted as parametric line and plane features. Two experiments are conducted to assess the proposed algorithm, and the results show that the addition of LiDAR significantly upgrades pose accuracy. In GNSS-challenge scenarios, LiDAR weakens the influence of GNSS outliers and improves the position accuracy by 77.6%, 67.4%, and 63.2% in the right, forward, and up directions, respectively.
期刊介绍:
Contributions are invited on novel achievements in all fields of measurement and instrumentation science and technology. Authors are encouraged to submit novel material, whose ultimate goal is an advancement in the state of the art of: measurement and metrology fundamentals, sensors, measurement instruments, measurement and estimation techniques, measurement data processing and fusion algorithms, evaluation procedures and methodologies for plants and industrial processes, performance analysis of systems, processes and algorithms, mathematical models for measurement-oriented purposes, distributed measurement systems in a connected world.