• Title/Summary/Keyword: Indoor Location Based Service

Search Result 173, Processing Time 0.031 seconds

A Study on User Location Estimation using Beacon Trilateration in Indoor Environment (비콘 삼변측량을 이용한 실내 환경에서의 사용자 위치 추정)

  • Lim, Su-Jong;Sung, Min-Gwan;Yun, Sang-Seok
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2021.10a
    • /
    • pp.180-182
    • /
    • 2021
  • This paper proposes a method for estimating the location of a user using a beacon to provide a service in an indoor environment. To estimate the location using the beacon, a Gaussian filter was applied to the RSSI value of the beacon, and the distance conversion function was obtained through the filtered RSSI value to estimate the tag location by trilateration. Then, in the indoor space where the beacons are installed, the location estimation accuracy of 8 places where 3 beacons are at a certain distance was confirmed. As a result, it was possible to confirm the position estimation accuracy of ±0.097 standard deviation and 0.242 distance error.

  • PDF

A Study on Development based on ToA Method of Location Determination System in Indoor (ToA 기반 실내 위치측위 시스템 개발에 관한 연구)

  • Lee, Doo-Yong;Piao, Xue-Hua;Song, Young-Keun;Jang, Jung-Hwan;Jho, Yong-Chul;Lee, Chang-Ho
    • Journal of the Korea Safety Management & Science
    • /
    • v.13 no.1
    • /
    • pp.99-105
    • /
    • 2011
  • Location-Based Service(LBS) is a service that provides a variety of convenience in life using location information that can be obtained by mobile communication network or satellite signal. In order to provide LBS precisely and efficiently, we have to need technologies such as location determination technology, platform technology and server technology first. In this study, we studied on how we can reduce the error on location determination of objects such people and things. Fingerprint location determination method was applied to this study because it can be used at current wireless communication infrastructure and less influenced by a variety of noisy environment than other location determination methods. We used the time of arrival(ToA) method in fingerprint location determination method. In order to confirm the performance of suggested method, we developed location determination test program with LAbVIEW 2010 and performed the test. According to indoor test results, the suggested method reduced the distance error by 24%, 34% and 19% respectively at indoor environment compared with deterministic kWNN and Rice Gaussian fingerprint methods.

Adaptive Indoor Location Tracking System Based on IEEE 802.15.4a (IEEE 802.15.4a 기반의 환경 적응형 위치 추적 시스템에 관한 연구)

  • Jeon Hyeon-Sig;Woo Sung-Hyun;Cho Sang-Do;Na Jong-In;Kim Ki-Hwan;Park Hyun-Ju
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.31 no.5A
    • /
    • pp.526-536
    • /
    • 2006
  • According as Ubiquitous comes, interest for indoor location tracking system was more increased socially. However, existing indoor location tracking system doesn't correspond actively in frequent change of indoor environment, and there is a problem that correct location measurement of transfer object is difficult by NLOS property of indoor environment. Purpose of this paper proposes environment accommodation location tracking system that is improved location precision of transfer object and grasps location of indoor transfer object effectively that is essential element effectively to provide service to satisfy various user's request according as Ubiquitous comes.

Current Status of Development of Rendering Drawings Service for Mobile Indoor Location Based Service (모바일 옥내위치기반서비스를 위한 도면 출력 서비스 구현 현황 소개)

  • Yim, Jaegeol;Le, Thanh C.
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2012.04a
    • /
    • pp.191-194
    • /
    • 2012
  • Rendering maps is an essential feature of the user interface component of a location based service (LBS) system. However, a developer may not too much worry about implementing the rendering maps part of his or her system because there are quite a few publicly available libraries that provide all kinds of functions of manipulating maps. Google Maps, Yahoo Map, Naver Map, Daum Map, and so on are example sites that provide those libraries. Rendering drawings is to indoor LBS as rendering maps is to LBS. However, there is no such thing as Google Maps that provides libraries for rendering drawings. This paper introduces a few web services and a library that is useful in developing user interfaces of indoor LBS systems.

Indoor Positioning System Using Robust Outlier Extended Kalman Filter (이상 잡음에 강인한 확장 칼만 필터를 이용한 실내 위치 추정 시스템)

  • Kim, Dong-Seon;Yeom, Hak-Sun;Kim, Sun-Woo
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
    • /
    • v.20 no.9
    • /
    • pp.954-960
    • /
    • 2009
  • In this paper, Indoor Positioning System based on Wi-Fi system which is one of the key technology in LBS(Location Based Service) is proposed. The proposed system estimates distance between MS(Mobile Station) and AP(Access Point) using RSSI(Received Signal Strength Indicator). RSSI is affected by outlier that originate from indoor environment complexity and obstacle. In this paper, we introduce a Robust outlier Extended Kalman Filter that can ignore, real-time outlier in the observations. To demonstrate performance of proposed indoor positioning system, we used a PDA as the MS.

Study of Users' Location Estimation based on Smartphone Sensors for Updating Indoor Evacuation Routes (실내 대피 경로의 최신화를 위한 스마트폰 센서 기반의 사용자 위치 추정에 관한 연구)

  • Quan, Yu;Lee, Chang-Ho
    • Journal of the Korea Safety Management & Science
    • /
    • v.20 no.2
    • /
    • pp.37-44
    • /
    • 2018
  • The Location Based Service is growing rapidly nowadays due to the universalization of the use for smartphone, and therefore the location determination technology has been placed in a very important position. This study suggests an algorithm that can provide the estimate of users' location by using smartphone sensors. And in doing so we will propose a methodology for the creation and update of indoor map through the more accurate position estimation using smartphone sensors such as acceleration sensor, gyroscope sensor, geomagnetic sensor and rotation sensor.

A Study on Measurement Error Reduction of Indoor and Outdoor Location Determination in Fingerprint Method (실내외 위치측위를 위한 Fingerprint 기반 측정오차 감소 방안 연구)

  • Kwon, Dae-Woo;Lee, Doo-Yong;Song, Young-Keun;Jang, Jung-Hwan;Lee, Chang-Ho
    • Journal of the Korea Safety Management & Science
    • /
    • v.13 no.1
    • /
    • pp.107-114
    • /
    • 2011
  • Location-Based Service(LBS) is a service that provides a variety of convenience in life using location information that can be obtained by mobile communication network or satellite signal. In order to provide LBS precisely and efficiently, we need the location determination technology, platform technology and server technology. In this study, we studied on how we can reduce the error on location determination of objects such people and things. Fingerprint location determination method was applied to this study because it can be used at current wireless communication infrastructure and less influenced by a variety of noisy environment than other location determination methods. We converted the probability value to logarithmic scale value because using the sum of k probability values is not suitable to be applied to weight determination. In order to confirm the performance of suggested method, we developed location determination test program with Visual Basic 6.0 and performed the test. According to indoor and outdoor test results, the suggested stochastic method reduced the distance error by 17%, 18% and 9% respectively at indoor environment and 25%, 11% and 4% at outdoor environment compared with deterministic NN, kNN and kWNN fingerprint methods.

ILOCAT: an Interactive GUI Toolkit to Acquire 3D Positions for Indoor Location Based Services (ILOCAT: 실내 위치 기반 서비스를 위한 3차원 위치 획득 인터랙티브 GUI Toolkit)

  • Kim, Seokhwan
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.24 no.7
    • /
    • pp.866-872
    • /
    • 2020
  • Indoor location-based services provide a service based on the distance between an object and a person. Recently, indoor location-based services are often implemented using inexpensive depth sensors such as Kinect. The depth sensor provides a function to measure the position of a person, but the position of an object must be acquired manually using a tool. To acquire a 3D position of an object, it requires 3D interaction, which is difficult to a general user. GUI(Graphical User Interface) is relatively easy to a general user but it is hard to gather a 3D position. This study proposes the Interactive LOcation Context Authoring Toolkit(ILOCAT), which enables a general user to easily acquire a 3D position of an object in real space using GUI. This paper describes the interaction design and implementation of ILOCAT.