作者：
TUCK, EFPATTERSON, DPSTUART, JRLAWRENCE, MHCalling Communications Corporation. 1900 West Garvey Ave
South. Suite 200 West Covina CA 91790 USA. Chairman of Calling Communications Corporation. He is also the Managing Director of Kinship Venture Management
Inc. the general partner of Kinship Partners 11 and a General Partner of Boundary the general partner of The Boundary Fund. As a venture capitalist he has founded or participated in founding several telecommunications companies including Calling Communications Corporation Magellan Systems Corporation
manufactures of Global Positioning System receivers Applied Digital Access
manufacturer of DS-3 test access and network performance monitoring equipment Endgate Technology Corporation
specialists in satellite phased array antennas and Poynting Systems Corporation. now a division of Reliance Corporation
manufacturers of fibre optic transport equipment. He was a founder of Kebby Microwave Corporation where he invented the first solid-state. frequency-modulated commercial microwave link system. The company was acquired by ITT Corporation where he rose to the position of V.P. and Technical Director of ITT North America Telecommunications Inc. Subsequently he was V.P. of Marketing and Engineering at American Telecommunications Inc. (ATC). He was founding Director of American Telecom Inc. a joint venture between ATC and Fujitsu and has served on more than 20 boards of directors including those of three public companies. He has authored articles on microwave engineering and telephone signalling and was a contributor to Reference Data For Radio Engineers. He is a graduate of the University of Missouri at Rolla where he was later awarded an honorary Professional degree and serves on its Academy of Electrical Engineering. Mr Tuck is a Senior Member of the IEEE a Fellow of the Institution of Engineers (Australia) a Professional Member of the AIAA and a registered professional engineer in three states. More than 25 years of experience in the telecommunications industry where he has been responsibl
There is a very large demand for basic telephone service in developing nations, and remote parts of industrialized nations, which cannot be met by conventional wireline and cellular systems. This is the world's la...
详细信息
There is a very large demand for basic telephone service in developing nations, and remote parts of industrialized nations, which cannot be met by conventional wireline and cellular systems. This is the world's largest unserved market. We describe a system which uses recent advances in active phased arrays, fast-packet switching technology, adaptive routeing, and light spacecraft technology, in part based on the work of the Jet Propulsion laboratory and on recently-declassified work done on the Strategic Defense Initiative, to make it possible to address this market with a global telephone network based on a large low-Earth-orbit constellation of identical satellites. A telephone utility can use such a network to provide the same modern basic and enhanced telephone services offered by telephone utilities in the urban centres of fully-industrialized nations. Economies of scale permit capital and operating costs per subscriber low enough to provide a service to all subscribers, regardless of location, at prices comparable to the same services in urban areas of industrialized nations, while generating operating profits great enough to attract the capital needed for its construction. The bandwidth needed to support the capacity needed to gain these economies of scale requires that the system use K(alpha)-band frequencies. This choice of frequencies places unusual constraints on the network design, and in particular forces the use of a large number of satellites. Global demand for basic and enhanced telephone service is great enough to support at least three networks of the size described herein. The volume of advanced components, and services such as launch services, required to construct and replace these networks is sufficient to propel certain industries to market leadership positions in the early 21st Century.
作者：
ECKHART, MUSN (RET.)The Authoris currently Chief Scientist in the Autonetics Marine Systems Division
Rockwell International concentrating in Digital Simulation Applications in System Engineering. A graduate of the U. S. Naval Academy in 1945 he served in various surface assignments until 1950. Subsequent thereto after being designated an Engineering Duty Officer (ED) he had Type Commander Staff Laboratory ESO and Naval Shipyard assignments until 1962 when he became the Miltary Chairman Electrical Science at the U. S. Naval Academy. In 1965 he became the Head Electrical/Electronics Design Branch Bureau of Ships remaining in this assignment until 1967 when he assumed the responsibilities of Director Ship Concept Design Division Naval Ship Engineering Center. Upon retiring from the U. S. Naval Service in 1970 he joined Rockewell International and the following year became the Manager of the Integration Programs Group involved in Model—Based Systems Analysis EM Effectiveness Submarine Control and Ship Data Miltiplexing. His education includes a BS degree from the U. S. Naval Academy a BS degree in Electrical Engineering received from Massachusetts Institute of Technology in 1949and a MS degree in Electrical Engineering received from The George Washington University in 1967. A former ASNE Council Member
he has been active in ASNE at both the National and Local Section levels since 1967.
The general systems engineering state—of—the—art has not been equal to the functional diversity of modern multimission warships, nor to the more complex system relationships that are characteristically involved in ...
The general systems engineering state—of—the—art has not been equal to the functional diversity of modern multimission warships, nor to the more complex system relationships that are characteristically involved in their design. Resultant dependence upon qualitative assessments of higher level relationships in warship definition and design has been and is a critical impediment to the Navy's corporate purposes, both in prosecuting its vital rebuilding campaign and in dealing with the technological pace of naval warfare. A design methodology development, first reported on ASNE Day 74, has provided the basis for removing this impediment. The threshold criterion of system engineering, quantification, and correlation of total system design objectives, can be satisfied for warship definition and design. Further, the basic elements of an exploitive system engineering practice have been developed sufficiently to confirm their validity. This work is interpreted in terms of the system engineering structure that can be expected to emerge; first, because it can be done, and second, because its payoffs are so urgently needed by the Navy.
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