국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	ACTS Ka-Band Earth Stations: Technology, Performance, and Lessons Learned
저자	Richard C. Reinhart, Steven J. Struharik, John J. Diamond, and David Stewart
Keyword	Satellite communications; ACTS; Ka-Band; Ground terminal; Amplifiers; Antenna; Gateway; Inclined orbit
URL	http://gltrs.grc.nasa.gov/reports/2000/TP-2000-210047.pdf
보고서번호	NASA TP-2000-210047
발행년도	2000
출처	NASA Glenn Research Center
ABSTRACT	The Advanced Communications Technology Satellite (ACTS) Project invested heavily in prototype Ka-band satellite ground terminals to conduct an experiments program with ACTS. The ACTS experiments program proposed to validate Ka-band satellite and ground-station technology, demonstrate future telecommunication services, demonstrate commercial viability and market acceptability of these new services, evaluate system networking and processing technology, and characterize Ka-band propagation effects, including development of techniques to mitigate signal fading. This paper will present a summary of the fixed ground terminals developed by the NASA Glenn Research Center and its industry partners, emphasizing the technology and performance of the terminals and the lessons learned throughout their 6-year operation, including the inclined orbit phase-of-operations. The fixed ground stations used for experiments by government, academic, and commercial entities used reflector-based offset-fed antenna systems with antennas ranging in size from 0.35 to 3.4쟭 in diameter. Gateway earth stations included two systems referred to as the NASA Ground Station (NGS) and the Link Evaluation Terminal (LET).