Delays in NASA's Earth Science Enterprise PDF Download

Author: United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics
Publisher:
ISBN:
Category : Political Science
Languages : en
Pages : 84

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Author: United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics
Publisher:
ISBN:
Category : Communication in science
Languages : en
Pages : 71

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Author: United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics
Publisher:
ISBN:
Category : Political Science
Languages : en
Pages : 76

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Author:
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Category :
Languages : en
Pages :

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Category : Astronautics in earth sciences
Languages : en
Pages : 30

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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309061342
Category : Science
Languages : en
Pages : 63

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Author: National Research Council (U.S.). Committee to Review NASA's Earth Science Enterprise Applications Plan
Publisher:
ISBN:
Category : Earth Science Enterprise Program (U.S.)
Languages : en
Pages : 22

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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309069823
Category : Science
Languages : en
Pages : 104

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Remote observations of Earth from space serve an extraordinarily broad range of purposes, resulting in extraordinary demands on those at the National Aeronautics and Space Administration (NASA), the National Oceanic and Atmospheric Administration (NOAA), and elsewhere who must decide how to execute them. In research, Earth observations promise large volumes of data to a variety of disciplines with differing needs for measurement type, simultaneity, continuity, and long-term instrument stability. Operational needs, such as weather forecasting, add a distinct set of requirements for continual and highly reliable monitoring of global conditions. The Role of Small Satellites in NASA and NOAA Earth Observation Programs confronts these diverse requirements and assesses how they might be met by small satellites. In the past, the preferred architecture for most NASA and NOAA missions was a single large spacecraft platform containing a sophisticated suite of instruments. But the recognition in other areas of space research that cost-effectiveness, flexibility, and robustness may be enhanced by using small spacecraft has raised questions about this philosophy of Earth observation. For example, NASA has already abandoned its original plan for a follow-on series of major platforms in its Earth Observing System. This study finds that small spacecraft can play an important role in Earth observation programs, providing to this field some of the expected benefits that are normally associated with such programs, such as rapid development and lower individual mission cost. It also identifies some of the programmatic and technical challenges associated with a mission composed of small spacecraft, as well as reasons why more traditional, larger platforms might still be preferred. The reasonable conclusion is that a systems-level examination is required to determine the optimum architecture for a given scientific and/or operational objective. The implied new challenge is for NASA and NOAA to find intra- and interagency planning mechanisms that can achieve the most appropriate and cost-effective balance among their various requirements.

Author:
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Category :
Languages : en
Pages : 376

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Author: Aloizio Pereira da Silva
Publisher: CRC Press
ISBN: 1351984217
Category : Computers
Languages : en
Pages : 387

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Delay- and Disruption Tolerant Networks (DTNs) are networks subject to arbitrarily long-lived disruptions in connectivity and therefore cannot guarantee end-to-end connectivity at all times. Consequently DTNs called for novel core networking protocols since most existing Internet protocols rely on the network’s ability to maintain end-to-end communication between participating nodes. This book presents the fundamental principles that underline DTNs. It explains the state-of-the-art on DTNs, their architecture, protocols, and applications. It also explores DTN’s future technological trends and applications. Its main goal is to serve as a reference for researchers and practitioners.