IMT-2000(FPLMTS)의 특징 및 무선핵심기술에 관한 고찰

손홍민 호남대학교 정보통신연구소 1997 정보통신연구 Vol.6 No.-

본고는 21세기 초에 서비스 개시를 목표로 현재 ITU 에서 국제표준화가 진행중인 차세대 이동통신 시스템인 IMT-2000의 주요 특징에 대해 알아보았다. 이들 특징으로부터 IMT-2000의 시스템 구축에 필요한 핵심 무선기술을 도출하고 그 기술들의 연구개발의 주안점 및 방향을 제시 하였다. IMT-2000/FPLMTS are the third-genenation mobile communication systems, that are now standardized by the ITU-R for world wide use around year 2000. In this paper, the concepts and the key features of IMT-2000 are described first. The radio key technologies in IMT-2000 systems are then presented. Finally the methods for developing these technologies are discussed.

초고속 정보서비스를 위한 도서지역 가입자망 고도화에 관한 연구

손홍민 호남대학교 정보통신연구소 2001 정보통신연구 Vol.11 No.-

Recently, the rapid progress toward an information-oriented society results in the regional disparity · in information services. Especially, the subscribe lines in islands are not advanced due to the geographical factors and a small number of subscribe. The underdeveloped subscribe lines in islands deepens inequalities in the development between land and island region. The presents of network structure and operation of the island communication in Korea are analyzed, and the methods to advance subscribe lines for islands are proposed in this paper.

ITS용 밀리미터파 차량 레이더의 무선설비 규격에 관한 연구

손홍민 호남대학교 정보통신연구소 2000 정보통신연구 Vol.10 No.-

This paper describes a millimeter wave automotive radar for ITS. The service and performance requirements of the radar are introduced first. And also the principles, functions and architecture of the radar system are presented. Radio equipment specifications for accomplishing performances required are then derived theoretically. The results of developing the specifications propose the available frequency band, its width and transmission power for the radar. To match worldwide standards and promote technology advance, it is recommended that the radar type and modulation method are not limited especially. Finally, the plans to extract desired information exactly under various transport conditions is discussed as further studies.

Design of Innovative SMA PR Connections Between Steel Beams and Composite Columns

손홍민,Roberto T. Leon,허종완 한국복합신소재구조학회 2014 복합신소재구조학회논문집 Vol.5 No.1

This study describes the development of innovative connections between steel beams and concrete-filled tube columns that utilize a combination of low-carbon steel and super-elastic shape memory alloy components. The intent isto combine the recentering behavior provided by the shape memory alloys to reduce building damage and residual drift after a major earthquake with the excellent energy dissipation of the low-carbon steel. The analysis and design of structures requires that simple yet accurate models for the connection behavior be developed. The development of a simplified 2D spring connection model for cyclic loads from advanced 3D FE monotonic studies is described. The implementation of those models into non-linear frame analyses indicates hat the recentering systems will provide substantial benefits for smaller earthquakes and superior performance to all-welded moment frames for large earthquakes.

밀리미터파 자동차레이더의 개발동향 및 기술적 과제

손홍민 한국전자파학회 1998 전자파기술 Vol.9 No.4

원격탐사용 상관형 마이크로파 방사계의 감도 특성

손홍민 호남대학교 1999 호남대학교 학술논문집 Vol.20 No.2

The purpose of this paper is to develope expressions for the sensitivity of correlation type microwave radiometers. The sensitivities of conventional and correlation type are compared both theoretically and experimentally in this paper. These results show that the correlation type can lead to a reduction in sensitivity approximately 30 percent.

무선마이크의 기술기준 개정 검토

손홍민 호남대학교 정보통신연구소 1997 정보통신연구 Vol.7 No.-

무선마이크는 기존의 유선마이크에 비해 설치, 휴대 및 사용상의 간편성으로 그 수요가 급격히 증가하고 있으며, 무선통신 관련 기술의 발전으로 그 용도 및 제품의 다양화 면에서도 확대일로에 있다. 그러나, 국내의 무선마이크 관련 법제도 및 기술수준은 이러한 세계적 추세를 수용하는데 문제점을 안고 있다고 지적되고 있다. 본고는 국내외의 무선마이크 관련 법제도 및 기술기준을 조사, 비교분석을 통하여 국내의 관련 법규 및 업계의 문제점을 지적하고 그 개선방안을 검토하였다. The demand for wireless microphones is increasing rapidly because of their facilities, and their application area and a great variety of products are extended too. But, the current radio regulations have many problems to admit the rapid variations of macket and technologies. In this paper, the problems are discussed through the comparative study of foreign radio regulations, and improvement in the regulations and technical requirements are considered.

C-band 마이크로파 라디오미터를 이용한 인체에 의한 배경 공간의 수신 복사전력 변화 측정

손홍민,박홍균 한국전자통신학회 2015 한국전자통신학회 논문지 Vol.10 No.3

In this paper, we propose a passive microwave sensor for detection of human body applied microwave radiometer technologies. The proposed sensor detects human body by measuring the received radiation power changes from fixed background object induced human body. A c-band microwave radiometer is designed and implemented. The received radiation power changes induced human body is measured by the c-band microwave radiometer, and the effectiveness of the proposed sensor is evaluated by the measurement result analysis. 본 논문에서는 마이크로파 라디오미터의 기술을 응용한 수동형 마이크로파 인체 감지 센서를 제안한다. 제안된 센서는 고정된 배경 물체로부터 수신되는 복사전력의 인체에 의한 미약한 변화를 측정하여 감시 공간내의 인체를 감지한다. C-band 마이크로파 라디오미터를 설계 제작하여 인체에 의한 수신 복사전력의 변화를 측정하고 그 결과를 분석하여 제안한 센서의 유효성을 평가한다.

The SWG Component Technology Classification Scheme Researchthrough the Technology Trend Analysis

손홍민,허종완 한국수자원학회 2015 한국수자원학회논문집 Vol.48 No.11

The technology of the SWG(Smart Water Grid) as one of most important national projects results in significant assignment that is closely associated with systematic management and effective operation. The individual component technics are required to establish directory and classification for the purpose of effectively managing their information related to research and development(R&D). The national science technology(S&T) standard classification tree which results in the representative example has been established with an intention to manage R&D information, human resource, and budget. It has been also revised every five years and then used in the various fields related to the evaluation, administration, and prediction of the national R&D projects. In addition, the standard classification system for R&D projects has been widely used in the UNESCO(United Nations Educational, Scientific and Cultural Organization) and EU(European Union) since the Frascati Manual was established in the Organization for Economic Cooperation and Development(OECD). Therefore, it is necessary for SWG techniques to develop the standard S&T classification tree for research management and evaluation. For this, it is essential to draw the core techniques for the SWG, which are incorporated with IT(Information Technology), NT(Nano Technology), and BT(Biology Technology).

미국의 비허가 무선기기 기술기준 분석

손홍민 호남대학교 산업기술연구소 1999 산업기술연구논문집 Vol.7 No.-

비허가 무선기기는 저 출력의 전파를 발사하는 소형 무선기기로서 전파사용에 따른 정부 및 관련기관의 허가나 신고없이도 사용할 수가 있다. 이러한, 법규상 및 전파사용에 따른 편리함으로 인해 최근 그 수요 및 이용범위가 확산일로에 있다. 특히, 무선 멀티미디어의 본격적인 도입과 더불어 21세기에는 세계적으로 거대한 시장이 형성될 것이다. 본 논문는 비허가 무선기기를 우리의 새로운 전략적 수출품목으로 육성시키는 관점에서 주요 수출국이자 세계시장에 막대한 영향력을 행사하는 미국의 관련법 제도 및 기술기준을 분석하였다. 따라서, 본 논문의 내용이 수출상품 및 투자기술의 품목개발에 고심하는 관련 중소기업에 많은 참고가 될 것으로 기대된다. Nowdays, the demand for wireless equipments is increasing rapidly due to the advance of radio communication technologies and the growth of economics life. Especially, unlicensed radio devices that radiate a relatively low emission power are used widely in voice or data transmission, radio remote control for the operation of various equipments within short range. Because it do not need license to operate these radio devices, the advantage of no requirement license extends their application and market. The unlicensed radio devices regulations and technical criteria of the U.S.A. were investigated and analyzed in this paper. It is expected that the results of this paper are helpful in developing new expert articles and technologies at small and medium enterprises.