Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 548
Book Description
Scientific and Technical Aerospace Reports
Author: Deep Space Telecommunications Systems Engineering
Author: Joseph H. YuenPublisher: 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.
Proceedings of the 41st International Instrumentation Symposium
Author: Instrument Society of America. Aerospace Industry DivisionPublisher:
ISBN: 9781556175510
Category : Aerodynamic measurements
Languages : en
Pages : 734
Book Description
NHB.
Author: Assessment of Space Communications Technology, Hearings Before the Subcommittee on Space Science and Applications...91-1, Dec. 16, 17, 18, 19, 1969
Author: United States. Congress. House. Science and AstronauticsPublisher:
ISBN:
Category :
Languages : en
Pages : 352
Book Description
Large Space Structures & Systems in the Space Station Era
Author: Publisher:
ISBN:
Category : Large space structures (Astronautics)
Languages : en
Pages : 368
Book Description
Directory of Federal Laboratory & Technology Resources
Author: Publisher:
ISBN:
Category : Administrative agencies
Languages : en
Pages : 778
Book Description
Technical Abstract Bulletin
Author: Directory of Federal Laboratory and Technology Resources
Author: Publisher: DIANE Publishing
ISBN: 0788101919
Category :
Languages : en
Pages : 727
Book Description
Describes the individual capabilities of each of 1,900 unique resources in the federal laboratory system, and provides the name and phone number of each contact. Includes government laboratories, research centers, testing facilities, and special technology information centers. Also includes a list of all federal laboratory technology transfer offices. Organized into 72 subject areas. Detailed indices.
Author: