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- W2219134023 abstract "The need for indoor pedestrian navigators is quickly increasing in various applications over the last few years. However, indoor navigation still faces many challenges and practical issues, such as the need for special hardware designs and complicated infrastructure requirements. This paper originally proposes a pedestrian navigator based on tightly coupled (TC) integration of low-cost microelectromechanical systems (MEMS) sensors and WiFi for handheld devices. Two other approaches are proposed in this paper to enhance the navigation performance: the use of MEMS solution based on pedestrian dead reckoning/inertial navigation system (PDR/INS) integration and the use of motion constraints, such as non-holonomic constraints, zero velocity update, and zero angular rate update for the MEMS solution. There are two main contributions in this paper: TC fusion of WiFi, INS, and PDR for pedestrian navigation using an extended Kalman filter and better heading estimation using PDR and INS integration to remove the gyro noise that occurs when only vertical gyroscope is used. The performance of the proposed navigation algorithms has been extensively verified through field tests in indoor environments. The experiment results showed that the average root mean square position error of the proposed TC integration solution was 3.47 m in three trajectories, which is 0.01% of INS, 10.38% of PDR, 32.11% of the developed MEMS solution, and 64.58% of the loosely coupled integration. The proposed TC integrated navigation system can work well in the environment with sparse deployment of WiFi access points." @default.
- W2219134023 created "2016-06-24" @default.
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- W2219134023 date "2016-01-01" @default.
- W2219134023 modified "2023-10-18" @default.
- W2219134023 title "Tightly-Coupled Integration of WiFi and MEMS Sensors on Handheld Devices for Indoor Pedestrian Navigation" @default.
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- W2219134023 doi "https://doi.org/10.1109/jsen.2015.2477444" @default.
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