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이동국 위치 추정을 위한 TOA와 TDOA방법의 비교분석
윤현성,호인석,이창호,변건식 동아대학교 정보기술연구소 2000 情報通信硏究所論文誌 Vol.8 No.1
This paper is aimed at developing an location tracking for mobile station employing currently available mobile communication network of cellular phone and PCS(Personal Communication System), When the location tracking of mobile stations is in services, the services such as Emergency-119, crime investigation, effective urban traffic management or the safety protection of Alzheimer's patients, can be available. This paper is to track the mobile station in communication network in NLOS environment. To achieve reduction of the standard noise, Kalman filter is used. In terms of the distance, positions are located by using TOA and TDOA methods in LOS environment that removes NLOS bias in the measured data. And then smoothing method is used. to achieve reduction of the position error values.
저전력 모드 Bluetooth 시스템을 이용한 파일 전송에 관한 성능 분선
윤현성,이민혁,변건식 동아대학교 정보기술연구소 2002 情報技術硏究所論文誌 Vol.9 No.2
Bluetooth is the name given to a new technology standard using short-range radio links, intended to replace the cable(s) connecting portable and/or fixed electronic devices. The standard defines a uniform structure for a wide range of devices to communicate with each other, with minimal user effort. Its key features are robustness, low complexity, low power and low cost. The standard is aimed at achieving global acceptance such that any Bluetooth device, anywhere in the world, can connect to other Bluetooth devices in its proximity , regardless of brand. Bluetooth enabled electronic devices connect and communicate wirelessly via short-range, ad hoc networks called piconets. Each unit can simultaneously communicate with up to seven other units per piconet. Moreover, each unit can simultaneously belong to several piconets. These piconets are established dynamically and automatically as Bluetooth devices enter and leave the radio proximity.
이동국 위치 추정을 위한 TOA와 TDOA방법의 비교 분석
윤현성,이창호,변건식 동아대학교 2001 大學院論文集 Vol.26 No.-
This paper is aimed at developing an location tracking system of mobile station based on currently available mobile communication network of mobile phone and PCS(Personal Communication System). When the location tracking of mobile stations is in services, Emergency-119, all of crime investigation, effective urban traffic management and the safety protection of Alzheimer's patients can be available. In order to track the location of the mobile and base station, assumption in this paper is to use the statistic characteristics of LOS when modeling the standard noise in case that radio path is LNOS environment. The standard variation of the standard noise is ±150. First, location is estimated by the positioning algorithms of TOA and TDOA and compared each other. Second, after canceling the standard noise by Kalman filter, location is estimated by the above two positioning algorithms. Finally, the location by the Kalman filter and two positioning algorithms is estimated by smoothing method. As a result, 2 dimensional average location error is improved by 51.2m in TOA and 34.8m in TDOA when Kalman titer and two positioning algorithms are used, compared with the two positioning algorithms used. And there is 3 more meter improvement after smoothing than Kalman falter and two positioning algorithms used.
윤현성,이창호,변건식 동아대학교 정보기술연구소 2001 情報通信硏究所論文誌 Vol.8 No.2
In this paper, the dedicated short range communication(DSRC) system which used as the automatic gate system(AGS) Donga Univ. RRC developed is applied to yard automation. We proposed the communication algorithm of between roadside equipment(RSE) and on-board equipment(OBE). We analyzed transmitted and received information, classification and feature of between OBE and RSE for automation of the container yard and unloading system.
피트니스센터의 SNS마케팅 특성이 소비자 태도와 구매의도에 미치는 영향
윤현성,곽한병 미래융합통섭학회 2022 현대사회와 안전문화 Vol.5 No.2
연구목적 본 연구는 피트니스센터의 SNS마케팅 특성이 소비자 태도 및 구매의도의 관계를 실증적으로 검증하는데 목적이 있다. 연구방법 이 연구의 목적을 살펴보기 위하여 2019년 10월 1일부터 2019년 12월까지 수도권에 위치한 피트니스센터의 회원을 대상으로 설문조사를 실시하였고, 유효표본 291부를 최종분석에 활용하였다. 분석에 활용된 자료는 SPSS 22.0을 활용하여 빈도분석, 탐색적 요인분석, 신뢰도 분석, 상관관계분석 및 다중회귀분석을 실시하였다. 연구결과 도출된 결과를 보면, 첫째, SNS마케팅 특성의 정보성, 상호작용, 멀티미디어성은 소비자 태도의 인지적 행동과 감정적 행동에 정적인 영향을 미쳤다. 둘째, SNS마케팅 특성의 정보성, 상호작용, 멀티미디어성은 구매의도에 정적인 영향을 미쳤다. 셋째, 피트니스센터 이용자의 소비자 태도의 인지적 행동과 감정적 행동은 구매의도에 정적인 영향을 미쳤다. 결론 피트니스센터의 SNS마케팅 특성은 소비자 태도와 구매의도를 향상시키는 마케팅임을 시사하며, 소비자 태도가 구매의도를 향상시키는 요인으로 긍정적인 소비자 태도를 위한 운영의 필요성도 시사한다.