Author: United States. General Accounting Office
Publisher:
ISBN:
Category : Administrative agencies
Languages : en
Pages : 420
Book Description
Status of Open Recommendations
Author: United States. General Accounting Office
Publisher:
ISBN:
Category : Administrative agencies
Languages : en
Pages : 420
Book Description
Publisher:
ISBN:
Category : Administrative agencies
Languages : en
Pages : 420
Book Description
Indexes for Abstracts of Reports and Testimony
Author:
Publisher:
ISBN:
Category : Finance, Public
Languages : en
Pages : 556
Book Description
Publisher:
ISBN:
Category : Finance, Public
Languages : en
Pages : 556
Book Description
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
Network World
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
Book Description
For more than 20 years, Network World has been the premier provider of information, intelligence and insight for network and IT executives responsible for the digital nervous systems of large organizations. Readers are responsible for designing, implementing and managing the voice, data and video systems their companies use to support everything from business critical applications to employee collaboration and electronic commerce.
Publisher:
ISBN:
Category :
Languages : en
Pages : 52
Book Description
For more than 20 years, Network World has been the premier provider of information, intelligence and insight for network and IT executives responsible for the digital nervous systems of large organizations. Readers are responsible for designing, implementing and managing the voice, data and video systems their companies use to support everything from business critical applications to employee collaboration and electronic commerce.
Telecommunications Equipment Research and Manufacturing Competition Act of 1991
Author: United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Communications
Publisher:
ISBN:
Category : Business & Economics
Languages : en
Pages : 168
Book Description
Publisher:
ISBN:
Category : Business & Economics
Languages : en
Pages : 168
Book Description
Monthly Catalogue, United States Public Documents
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 882
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 882
Book Description
Department of the Interior and Related Agencies Appropriations for 2000: Justification of the budget estimates: U.S. Geological Survey
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 2002
Book Description
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 2002
Book Description
Department of the Interior and Related Agencies Appropriations for 2000
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1992
Book Description
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1992
Book Description
Deep Space Telecommunications Systems Engineering
Author: Joseph H. Yuen
Publisher: Springer Science & Business Media
ISBN: 1475749236
Category : Technology & Engineering
Languages : en
Pages : 615
Book Description
The challenge of communication in planetary exploration has been unusual. The guidance and control of spacecraft depend on reliable communication. Scientific data returned to earth are irreplaceable, or replaceable only at the cost of another mission. In deep space, communications propagation is good, relative to terrestrial communications, and there is an opportunity to press toward the mathematical limit of microwave communication. Yet the limits must be approached warily, with reliability as well as channel capacity in mind. Further, the effects of small changes in the earth's atmosphere and the interplanetary plasma have small but important effects on propagation time and hence on the measurement of distance. Advances are almost incredible. Communication capability measured in 18 bits per second at a given range rose by a factor of 10 in the 19 years from Explorer I of 1958 to Voyager of 1977. This improvement was attained through ingenious design based on the sort of penetrating analysis set forth in this book by engineers who took part in a highly detailed and amazingly successful pro gram. Careful observation and analysis have told us much about limitations on the accurate measurement of distance. It is not easy to get busy people to tell others clearly and in detail how they have solved important problems. Joseph H. Yuen and the other contribu tors to this book are to be commended for the time and care they have devoted to explicating one vital aspect of a great adventure of mankind.
Publisher: Springer Science & Business Media
ISBN: 1475749236
Category : Technology & Engineering
Languages : en
Pages : 615
Book Description
The challenge of communication in planetary exploration has been unusual. The guidance and control of spacecraft depend on reliable communication. Scientific data returned to earth are irreplaceable, or replaceable only at the cost of another mission. In deep space, communications propagation is good, relative to terrestrial communications, and there is an opportunity to press toward the mathematical limit of microwave communication. Yet the limits must be approached warily, with reliability as well as channel capacity in mind. Further, the effects of small changes in the earth's atmosphere and the interplanetary plasma have small but important effects on propagation time and hence on the measurement of distance. Advances are almost incredible. Communication capability measured in 18 bits per second at a given range rose by a factor of 10 in the 19 years from Explorer I of 1958 to Voyager of 1977. This improvement was attained through ingenious design based on the sort of penetrating analysis set forth in this book by engineers who took part in a highly detailed and amazingly successful pro gram. Careful observation and analysis have told us much about limitations on the accurate measurement of distance. It is not easy to get busy people to tell others clearly and in detail how they have solved important problems. Joseph H. Yuen and the other contribu tors to this book are to be commended for the time and care they have devoted to explicating one vital aspect of a great adventure of mankind.
Status of Open Recommendations
Author: United States. General Accounting Office
Publisher:
ISBN:
Category : Administrative agencies
Languages : en
Pages : 608
Book Description
Publisher:
ISBN:
Category : Administrative agencies
Languages : en
Pages : 608
Book Description