|Abstract:||Google released Android Nougat (version 7.0) in 2016, which opens the possibility to use raw data to achieve high precision solutions on low-cost smart devices. Due to the poor performance of the low-cost antenna and crystal oscillator of smartphone, the accuracy of traditional single point positioning can only reach about 10 meters. The target of this paper is to propose a pseudorange double difference (PDD) with IMU assisted model on smartphone. Real-time difference assisted by IMU positioning algorithm was first applied to realize high-precision positioning on stand-long smartphone platform. Three groups of pedestrian scenes positioning comparison experiments were carried out. The results show that MEMS-based IMU assisted PDD increases smartphone positioning precision and robustness, and the horizonal mean error can be less than 4 meters. It demonstrated that the algorithm can effectively stabilize the performance of smartphone positioning. The significance of this work is to prove that RTD assisted by IMU on low-cost mobile platform is feasible and this algorithm exhibits better performance than traditional positioning solutions.|
Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018)
September 24 - 28, 2018
Hyatt Regency Miami
|Pages:||445 - 454|
|Cite this article:||
Wu, Zida, Liu, Peilin, Liu, Qiang, Wang, Yuze, "MEMS-based IMU Assisted Real Time Difference Using Raw Measurements from Smartphone," Proceedings of the 31st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2018), Miami, Florida, September 2018, pp. 445-454.
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