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Localization technologies in wireless sensor networks have been suffering from great energy consumption problem due to the energy-constrained characteristic of the networks. Existing power allocating solutions are mostly distributed for the lack of global network knowledge. In this paper, we investigate localization algorithm with the support of software-defined network (SDN) technique and propose...
This paper proposes a hybrid step length model and a new azimuth estimation method based on the Pedestrian Dead Reckoning for personal indoor positioning. The hybrid step length model combines the information of the walking frequency and the variance of accelerations with the amplitudes of the acceleration signal. By weighting the azimuth estimated through the gyroscopes and the magnetometers respectively...
Depending on the application development needs of wireless sensor network technology, a wireless motion sensor node is developed which integrates Bluetooth Low Energy (BLE) technology. This paper describes the overall architecture of the node as well as the hardware and software modules design. A motion sensing system is designed for testing the performance of the motion sensor node. The system can...
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