Received Signal Strength Database Interpolation by Kriging for a Wi-Fi Indoor Positioning System

Sensors
Shau-Shiun JanYa-Wen Liu

Abstract

The main approach for a Wi-Fi indoor positioning system is based on the received signal strength (RSS) measurements, and the fingerprinting method is utilized to determine the user position by matching the RSS values with the pre-surveyed RSS database. To build a RSS fingerprint database is essential for an RSS based indoor positioning system, and building such a RSS fingerprint database requires lots of time and effort. As the range of the indoor environment becomes larger, labor is increased. To provide better indoor positioning services and to reduce the labor required for the establishment of the positioning system at the same time, an indoor positioning system with an appropriate spatial interpolation method is needed. In addition, the advantage of the RSS approach is that the signal strength decays as the transmission distance increases, and this signal propagation characteristic is applied to an interpolated database with the Kriging algorithm in this paper. Using the distribution of reference points (RPs) at measured points, the signal propagation model of the Wi-Fi access point (AP) in the building can be built and expressed as a function. The function, as the spatial structure of the environment, can create the RSS da...Continue Reading

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Citations

May 14, 2016·Sensors·Kourosh Khoshelham, Sisi Zlatanova
Jun 4, 2016·Sensors·Dongjin Wu, Linyuan Xia
Oct 20, 2019·Sensors·Germán Martín Mendoza-SilvaJoaquín Huerta

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Software Mentioned

Wireshark

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