A novel multi-scale temporal convolutional network (TCN) and long short-term memory network (LSTM) based magnetic localization approach is proposed. To enhance the discernibility of geomagnetic signals, the time-series preprocessing approach is constructed at first. Next, the TCN is invoked to expand the feature dimensions on the basis of keeping the time-series characteristics of LSTM model. Then, a multi-scale time-series layer is constructed with multiple TCNs of different dilation factors to address the problem of inconsistent time-series speed between localization model and mobile users. A stacking framework of multi-scale TCN and LSTM is eventually proposed for indoor magnetic localization. Experiment results demonstrate the effectiveness of the proposed algorithm in indoor localization.
@article{arxiv.2109.11750,
title = {Indoor Localization Using Smartphone Magnetic with Multi-Scale TCN and LSTM},
author = {Mingyang Zhang and Jie Jia and Jian Chen},
journal= {arXiv preprint arXiv:2109.11750},
year = {2021}
}