Basic Signal Processing Principles for Monitoring of Persons Using Uwb Sensors – An Overview

Kocur, Dušan; Švecová, Mária; Zetík, Rudolf

doi:10.15546/aeei-2019-0009

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…In the analysis of the used localization algorithms, attention was paid to the Time of Arrival (TOA) method (the previously described TWR uses Time of Flight (TOF) of the UWB signals for distance calculation). For this purpose, among others, geometrical methods, trilateration, Taylor Series, extended Kalman filters, particle filters, or optimization methods can be used [33][34][35][36][37][38][39].…”

Section: Localization Algorithmsmentioning

confidence: 99%

Research on Developing an Outdoor Location System Based on the Ultra-Wideband Technology

Rykała

Typiak

2020

Sensors

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Ultra-wideband (UWB) technology is one of the most promising wireless communication technologies. Examples of UWB applications include, among others, radiocommunication devices and location systems, due to their operating range, ability to work in outdoor environments, and resistance to multipath effects. This article focuses on the use of UWB technology in constructing a guide localization system for an unmanned ground vehicle (UGV), which is one of the stages of implementing a “follow me” system. This article describes the complete process of UWB signal processing from its acquisition, methods of filtering, and obtained results, to determining the location of the guide. This article examines the possibility of using modified versions of localization algorithms for determining the guide’s location, including trilateration, methods of nonlinear programming, and a geometric algorithm proposed by us. The innovation of this study consists in the implementation of an algorithm that changes the selection of equations (mathematical model) for determining location based on the number of available measurements from UWB sensors.

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Section: Localization Algorithmsmentioning

confidence: 99%

Research on Developing an Outdoor Location System Based on the Ultra-Wideband Technology

Rykała

Typiak

2020

Sensors

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“…An analysis of MP echo has shown that such a signal represents significantly nonstationary components of the raw radar signals. Therefore, a basic principle of MP-I and MP-II detection consists in the detection of time changes of adjacent impulse responses of the radargram due to the non-stationarity of the target echo [34]. The mentioned changes should be detected along the propagation time axis.…”

Section: Basic Principles Of Person Detectionmentioning

confidence: 99%

Localization of a person moving with an unknown character of motion

Švecová

Kocur

2020

Journal of Electromagnetic Waves and Applications

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In the last decade, it has been shown that short-range ultrawideband (UWB) sensors can provide promising solutions to the issue of people localization in many interesting applications. The applicability of particular localization methods utilizing this wireless technology depends on the form of the motion of the monitored person. Therefore, great effort was initially taken to localize people who always carry out the same type of movement, i.e. to localize either moving or only static persons. In real life, people do not move always by the same form of the motion, but the character of their movement is normally time-variable. Moreover, a person-monitoring system has usually no a priori information about the movement status of the person to be monitored. The issue of localization of persons moving both by an unknown and changing character of motion has not been satisfactorily addressed. Motivated by these findings, we will introduce a new concept of UWB sensor signal processing focused on localization of a person moving with an unknown and time-variable character of motion. This concept is based on the decomposition of possible motion activities of persons into a finite set of basic forms of movement defining the so-called types of persons, while a specific signal processing procedure is proposed. The corresponding form of a person's movement is first identified and then the person is detected and localized. The performance properties of this concept will be illustrated by its application for through-the-wall localization of a person moving with short and long stops.

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“…Numerous reviews and overviews from recent years suggest that in the case of detection and localization of people, UWB radar researchers have focused mainly on static humans concerning their vital signs [ 2 , 3 , 4 , 5 , 6 , 7 ]. Some meaningful references for readers interested in the field of localization and tracking of moving human targets are summarized e.g., in [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Positioning and Tracking of Multiple Humans Moving in Small Rooms Based on a One-Transmitter–Two-Receiver UWB Radar Configuration

Fortes

Svingal²,

Porteleky³

et al. 2022

Sensors

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The paper aims to propose a sequence of steps that will allow multi-person tracking with a single UWB radar equipped with the minimal antenna array needed for trilateration. Its localization accuracy is admittedly limited, but on the other hand, thoughtfully chosen placement of antennas can increase the detectability of several humans moving in their immediate vicinity and additionally decrease the computational complexity of the signal processing methods. It is shown that the UWB radar measuring with high rate and fine range resolution in conjunction with properly tuned processing parameters can continually track people even in the case when their radar echoes are crossing or merging. Emphasis is given to the simplified method of the time-of-arrival (TOA) estimation and association and the novel method needed for antenna height compensation. The performance of the proposed human tracking framework is evaluated for the experimental scenario with three people moving closely in a small room. A quantitative analysis of the estimated target tracks confirms the benefits of suggested high antenna placement and application of new signal processing methods in the form of decreasing the mean localization error and increasing the frequency of correct target position estimations.

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Basic Signal Processing Principles for Monitoring of Persons Using Uwb Sensors – An Overview

Cited by 5 publications

References 17 publications

Research on Developing an Outdoor Location System Based on the Ultra-Wideband Technology

Research on Developing an Outdoor Location System Based on the Ultra-Wideband Technology

Localization of a person moving with an unknown character of motion

Positioning and Tracking of Multiple Humans Moving in Small Rooms Based on a One-Transmitter–Two-Receiver UWB Radar Configuration

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