UKFWiTr: A Single-link Indoor Tracking Method Based on WiFi CSI | IEEE Conference Publication | IEEE Xplore

UKFWiTr: A Single-link Indoor Tracking Method Based on WiFi CSI


Abstract:

The indoor location based services are fascinating in many applications such as commercial recommendation, surveillance, and navigation. In this paper, we propose a high-...Show More

Abstract:

The indoor location based services are fascinating in many applications such as commercial recommendation, surveillance, and navigation. In this paper, we propose a high-precision indoor single-link passive tracking method based on Unscented Kalman Filter (UKF) using WiFi channel state information (CSI), namely UKFWiTr. In this method, both the CSI-quotient and Space-Alternating Generalized Expectation-maximization algorithm are used to estimate Doppler frequency shift and Time-of-Flight. Then, an Arrival-of-Angle optimization method and a tracking accuracy improvement method both based on UKF are put forward in UKFWiTr. The experimental results show that the average tracking error in different environments is less than 1.3m, and can even achieve 0.49m in particular scenarios.
Date of Conference: 26-29 March 2023
Date Added to IEEE Xplore: 12 May 2023
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Conference Location: Glasgow, United Kingdom

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