The role of technology in influencing future civil communications satellites
Article Abstract:
NASA and industry have worked since 1963 to introduce innovation and technology into the communications satellite business, which has grown to $3.5 billion per year in revenues and is a major global influence. Technology serves as both an enabler and as a driver of new and improved communications satellites. The 42 commercial communications satellites launched since 1965 carry approximately two-thirds of the international telecommunications traffic and show how technology has enabled and enhanced a major undertaking. Developers of new satellites learned from the experience of previous developers and, today, satellites have longer lifespans and higher capacities and there are few failures during launch or in orbit. Civil communications satellites have been strongly influenced by technology. The future should see new types of antenna systems, improved optics, intersatellite links, and advancements in microwave technology. NASA provides the leadership and undertakes high-risk innovations. The commercial communications satellite industry moves forward with new performance-improving and cost-reducing technologies.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1990
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Navigation Systems Performance Versus Civil Aviation Requirements
Article Abstract:
Navigation systems are being investigated by the Federal Aviation Administration (FAA) for a system or system mix to meet post- 1995 requirements. Candidates include Loran-C, Omega-VLF, GPS, VOR, DME, Doppler, and INS. Each system is compared with existing and system-use accuracy requirements. A mix of VOR, DME, Loran-C, Omega-VLF, and INS is recommended.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1983
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Civil GPS from a Future Perspective
Article Abstract:
Before the year 2000, the Global Positioning System (GPS) will find widespread civil navigation use. Geophysical survey and exploration, aircraft navigation, hand-held user, and automobile navigation applications will be made possible. Development issues include L2 access, user charge policy, differential GPS standards, and global mapping standards.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1983
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