A Passive Indoor Tracking Scheme With Geometrical Formulation

Zhou, Biao; Kim, Nammoon; Kim, Young‐Ok

doi:10.1109/lawp.2016.2537842

Cited by 8 publications

(14 citation statements)

References 8 publications

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“…3. WiFi in-house systems: Similarly with RFID and BLE in-house systems, the WiFi in-house systems are contact-less systems, where the Access Point and the WiFi tags or transmitters are installed externally to the human wearable fabrics or pockets [47]. A device-free WiFi fall detection scheme with average precision of 94% detection probability at a 15% false alarm rate has been recently shown in [43].…”

Section: Device-free Technologiesmentioning

confidence: 99%

Location Based Services Analysis Through Analytical Hierarchical Processes: An e-Health-Based Case Study

Lohan

Silva

Basiri

et al. 2017

Multi-Technology Positioning

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Wireless localisation has become a valuable information for a large number of location based or location-aware services [2]. Significant economic value can be generated with an increased granularity of the location information (i.e., knowing the location at block or room level instead of street or district level) as shown, for example, in [2]. LBS are generally offered to the users by an LBS provider, using one or more localisation technologies, which can belong or not to the LBS provider. For example, an LBS provider can use the information coming from the WiFi network owned by a Mall owner and provide position location information to the user. In this example, the LBS provider and the technology provider (i.e., the owner(s) of the WiFi network) are two distinct units. In another example, a cellular operator can use the information provided by its own cells or base stations to provide the user location. In this example, the LBS provider and the technology provider are the same unit, namely the cellular operator.

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Section: Device-free Technologiesmentioning

confidence: 99%

Location Based Services Analysis Through Analytical Hierarchical Processes: An e-Health-Based Case Study

Lohan

Silva

Basiri

et al. 2017

Multi-Technology Positioning

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“…We generally define the RSS fluctuation caused by the device-free target as radio frequency tomography (RFT) phenomenon [ 4 ]. Actually, recent research and experiments indicate that the RSS fluctuant can be easily detected when a mobile target walks across a line-of-sight link (LOSL) between pairs of wireless nodes [ 5 , 6 , 7 , 8 ]. Taking advantage of the RFT phenomenon, a passive indoor tracking scheme is proposed to find the crossing point (CP) on the LOSLs using geometrical the constraint method in reference [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Actually, recent research and experiments indicate that the RSS fluctuant can be easily detected when a mobile target walks across a line-of-sight link (LOSL) between pairs of wireless nodes [ 5 , 6 , 7 , 8 ]. Taking advantage of the RFT phenomenon, a passive indoor tracking scheme is proposed to find the crossing point (CP) on the LOSLs using geometrical the constraint method in reference [ 5 ]. Essentially, with the available topology information of the wireless node distribution, the trajectory of the device-free target can be uniquely identified by fusing the triggering sequence of the LOSLs into the geometric constraint strategy.…”

Section: Introductionmentioning

confidence: 99%

“…The performed experiment in reference [ 5 ] is under a relatively incomplete indoor environment, and the performance evaluation has not been sufficiently analyzed. Thus, in reference [ 6 ], the authors further investigated the performance of the schemes based on the geometric constraint method under various trajectories, node densities, and noisy topologies, by using the practical experiments and simulations.…”

Section: Introductionmentioning

confidence: 99%

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A Passive Tracking System Based on Geometric Constraints in Adaptive Wireless Sensor Networks

Zhou

Ahn

Lee

et al. 2018

Sensors

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Target tracking technologies in wireless sensor network (WSNs) environments fall into two categories: active and passive schemes. Unlike with the active positioning schemes, in which the targets are required to hold cooperative devices, the research on passive tracking, i.e., tracking device-free targets, has recently showed promise. In the WSN, device-free targets can be tracked by sensing radio frequency tomography (RFT) on the line-of-sight links (LOSLs). In this paper, we propose a passive tracking scheme exploiting both adaptive-networking LOSL webs and geometric constraint methodology for tracking single targets, as well as multiple targets. Regarding fundamental knowledge, we firstly explore the spatial diversity technique for RFT detection in realistic situations. Then, we analyze the power consumption of the WSN and propose an adaptive networking scheme for the purpose of energy conservation. Instead of maintaining a fixed LOSL density, the proposed scheme can adaptively adjust the networking level to save energy while guaranteeing tracking accuracy. The effectiveness of the proposed scheme is evaluated with computer simulations. According to the results, it is observed that the proposed scheme can sufficiently reduce power consumption, while providing qualified tracking performance.

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“…On the other hand, RF-based systems have a reduced accuracy up to several tens of centimeters, even reaching meters of error according to the distances between emitter and receivers, and presence of obstacles (furniture, building structure, people, etc.). A review of the different positioning methods used by RF-based systems is done in [ 15 ] and more recent examples can be found in [ 16 ] where the position determination of the target is done by means of geometrical methods achieving errors of several decimeters, being a simple and robust algorithm to be used in noisy environments. In [ 17 ], they develop an IPS merging RF and ultrasound technologies, using RF to obtain the starting point of the tracking and the ultrasound system for later displacements obtaining higher accuracy.…”

Section: Introductionmentioning

confidence: 99%

Indoor Positioning System Based on a PSD Detector, Precise Positioning of Agents in Motion Using AoA Techniques

Rodríguez-Navarro

Galilea

De-La-Llana-Calvo

et al. 2017

Sensors

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Here, we present an indoor positioning system (IPS) for detecting mobile agents based on a single Position Sensitive Device sensor (PSD) sited in the environment and InfraRed Emitter Diode (IRED) located on mobile agents. The main goal of the work is to develop an alternative IPS to other sensing technologies, cheaper, easier to install and with a low computational load to obtain a high rate of measurements per second. The proposed IPS has the capacity to accurately determine 3D position from the angle of arrival (AoA) of the signal received at the PSD sensor. In this first approach to the method, the agents are considered to move along a plane. We propose two alternatives for determining position: in one, tones are emitted on a frequency unique to each transmitter, while in the other, sequences are emitted.The paper proposes and set up a very simple and easy to deploy system capable of performing 3D positioning with a single analog sensor, obtaining a high accurate positioning and a reduced execution time for the signal processing. The low computational load of the IPS makes it possible to obtain a very high position update rate (more than 100 times per second), yielding millimetric accuracies.

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A Passive Indoor Tracking Scheme With Geometrical Formulation

Cited by 8 publications

References 8 publications

Location Based Services Analysis Through Analytical Hierarchical Processes: An e-Health-Based Case Study

Location Based Services Analysis Through Analytical Hierarchical Processes: An e-Health-Based Case Study

A Passive Tracking System Based on Geometric Constraints in Adaptive Wireless Sensor Networks

Indoor Positioning System Based on a PSD Detector, Precise Positioning of Agents in Motion Using AoA Techniques

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