Indoor localization based on hybrid Wi-Fi hotspots

Xu, Xiaolong; Tang, Yu; Li, Shanchang

doi:10.1109/ipin.2017.8115924

Cited by 6 publications

(5 citation statements)

References 21 publications

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“…GPS independent positioning systems are an exciting field of work. Location techniques commonly use GPS, Bluetooth, or radio frequency identication (RFID) technologies [7]. A disadvantage of GPS is that the satellite signals are blocked by obstacles, in addition, variations in weather results in approximations with errors of meters, so it is not possible to use this system as a method for indoor location [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of RSSI Fingerprinting in LoRa Networks

Anjum

Khan

Hassan

et al. 2019

2019 15th International Wireless Communications &Amp; Mobile Computing Conference (IWCMC)

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Localization has gained great attention in recent years, where different technologies have been utilized to achieve high positioning accuracy. Fingerprinting is a common technique for indoor positioning using short-range radio frequency (RF) technologies such as Bluetooth Low Energy (BLE). In this paper, we investigate the suitability of LoRa (Long Range) technology to implement a positioning system using received signal strength indicator (RSSI) fingerprinting. We test in real line-of-sight (LOS) and non-LOS (NLOS) environments to determine appropriate LoRa packet specifications for an accurate RSSI-to-distance mapping function. To further improve the positioning accuracy, we consider the environmental context. Extensive experiments are conducted to examine the performance of LoRa at different spreading factors. We analyze the path loss exponent and the standard deviation of shadowing in each environment.

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Section: Introductionmentioning

confidence: 99%

Analysis of RSSI Fingerprinting in LoRa Networks

Anjum

Khan

Hassan

et al. 2019

2019 15th International Wireless Communications &Amp; Mobile Computing Conference (IWCMC)

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“…However, there still exists an uncertainty given by the time resolution δt of the RS sensor. This resolution corresponds to the row-sweeping time and is presented in Equation (7).…”

Section: Statistical Analysis Of the Occ Subsystemmentioning

confidence: 99%

“…Most of the techniques proposed until present are based on radio frequency signals, generated specifically for that purpose [6], or reused from other systems such as WiFi network devices [7]. Nevertheless, there are also some techniques based on optical signals, which make use of the Solid State Illumination (SSL) devices present in LED lamps [8,9].…”

Section: Introductionmentioning

confidence: 99%

A Novel Ranging Technique Based on Optical Camera Communications and Time Difference of Arrival

Rabadán

Guerra

et al. 2019

Applied Sciences

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In this work, a new Time Difference of Arrival (TDoA) scheme for distance measurement based on Optical Camera Communication (OCC) systems is proposed. It relies on the use of optical pulses instead of radio-frequency signals as the time reference triggers, and the introduction of a rolling shutter camera, whose characteristics allows substituting the timer modules used in conventional TDoA techniques by image processing of the illuminated area in the picture. This processing on the camera’s images provides time measurements and implies and specific analysis, which is presented in this work. The system performance and properties, such as resolution and range, mainly depends on the camera characteristics, such as the frames capture rate and the image quality. This new technique is suitable to be implemented in smartphones or other Commercial Off-The-Shelf (COTS) devices equipped with a camera and speakers.

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“…The navigation system technology is able to obtain positioning information of any point on the surface of the earth and has outstanding features such as fast measurement speed and high efficiency. Moreover, the services provided gradually cover all areas of people's lives, including clothing, food, housing, and transportation, and modern people are increasingly inseparable from the technology of positioning and navigation [3][4][5][6]. However, most of these services require intelligent positioning technology to provide accurate location information, and considering the hardware conditions of positioning technology and its usage environment, it is difficult for a single positioning technology to meet the requirements of positioning accuracy for the above services.…”

Section: Introductionmentioning

confidence: 99%

Research on localization and navigation methods for intelligent terminal devices oriented to multi-source fusion technology

Guo,

Zhang

2023

Applied Mathematics and Nonlinear Sciences

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In this paper, GPS, WLAN, and INS are used as positioning information data sources, and multi-source fusion technology is used to build an intelligent positioning navigation device. The feature vectors of the original data are observed using the federal Kalman filter algorithm, and the information is continuously updated to assign weights to achieve the optimization of the positioning information. The three-dimensional information of the defined position is measured using the CNN algorithm, the faulty data in the filter is detected and removed, and the detected data enters the main filter instead of the faulty data for fusion. To prove the effectiveness of the device, experimental analysis is performed, and the results show that the device provides diverse, intelligent services with up to 95% localization accuracy and stronger signals.

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Indoor localization based on hybrid Wi-Fi hotspots

Cited by 6 publications

References 21 publications

Analysis of RSSI Fingerprinting in LoRa Networks

Analysis of RSSI Fingerprinting in LoRa Networks

A Novel Ranging Technique Based on Optical Camera Communications and Time Difference of Arrival

Research on localization and navigation methods for intelligent terminal devices oriented to multi-source fusion technology

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