Download or read book Spectrum Management for Science in the 21st Century written by National Research Council and published by National Academies Press. This book was released on 2010-02-25 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radio observations of the cosmos are gathered by geoscientists using complex earth-orbiting satellites and ground-based equipment, and by radio astronomers using large ground-based radio telescopes. Signals from natural radio emissions are extremely weak, and the equipment used to measure them is becoming ever-more sophisticated and sensitive. The radio spectrum is also being used by radiating, or "active," services, ranging from aircraft radars to rapidly expanding consumer services such as cellular telephones and wireless internet. These valuable active services transmit radio waves and thereby potentially interfere with the receive-only, or "passive," scientific services. Transmitters for the active services create an artificial "electronic fog" which can cause confusion, and, in severe cases, totally blinds the passive receivers. Both the active and the passive services are increasing their use of the spectrum, and so the potential for interference, already strong, is also increasing. This book addresses the tension between the active services' demand for greater spectrum use and the passive users' need for quiet spectrum. The included recommendations provide a pathway for putting in place the regulatory mechanisms and associated supporting research activities necessary to meet the demands of both users.
Download or read book Spectrum Management for the 21st Century written by CSIS Commission on Spectrum Management and published by CSIS. This book was released on 2003 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: More intensive use of spectrum would meet existing and potential demand and could be the basis for unprecedented economic growth.
Download or read book Commerce Justice Science and Related Agencies Appropriations for 2014 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Commerce, Justice, Science, and Related Agencies and published by . This book was released on 2013 with total page 1588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Commerce Justice Science and Related Agencies Appropriations for Fiscal Year 2007 written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on Commerce, Justice, Science, and Related Agencies and published by . This book was released on 2006 with total page 2068 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Science the Departments of State Justice and Commerce and Related Agencies Appropriations for 2007 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Science, State, Justice, and Commerce, and Related Agencies and published by . This book was released on 2005 with total page 2148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of a Forum on Spectrum Management Policy Reform written by National Research Council and published by National Academies Press. This book was released on 2004-06-17 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2003, the Department of Commerce's Spectrum Policy Initiative was established with the objective of promoting a more efficient and beneficial use of the spectrum. As part of that Initiative, a series of public forums about spectrum management policy was held. The Computer Science and Telecommunications Board was asked to organize one of these forums, a public forum to gather the views of a variety of government and private sector stakeholders about the impact of spectrum policy on their activities. This report presents a summary of those views. Among those included are those representing national defense, homeland security, aviation, science, public safety, amateur radio, cellular voice and data, and terrestrial broadcast uses of the spectrum. Although prepared by the NRC, the report does not present NRC findings or recommendations. A broader study of spectrum policy, including findings and recommendations, will be issued in early 2005.
Download or read book Departments of Commerce Justice Science and Related Agencies Appropriations for Fiscal Year 2006 written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on Commerce, Justice, Science, and Related Agencies and published by . This book was released on 2006 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Departments of Commerce Justice Science and Related Agencies Appropriations for Fiscal Year written by United States. Congress. Senate. Committee on Appropriations and published by . This book was released on 2006 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectrum Management written by Mark L. Goldstein and published by DIANE Publishing. This book was released on 2011-08 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radio frequency spectrum enables vital wireless communications services used by the federal gov¿t., businesses, and consumers. Spectrum capacity is necessary for wireless broadband (high-speed Internet access) and broadband deployment will boost the nation's capabilities in many important areas. As the demand for spectrum continues to increase, there is concern about adequate access to meet future needs. This report examines: (1) how the Nat. Telecomm. and Info. Admin. (NTIA) is managing spectrum needs of federal agencies; (2) how federal agencies are using and managing assigned spectrum; and (3) what steps NTIA has taken to meet recent initiatives aimed at making spectrum available for broadband. Illus. This is a print on demand report.
Download or read book A Strategy for Active Remote Sensing Amid Increased Demand for Radio Spectrum written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2015-09-21 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active remote sensing is the principal tool used to study and to predict short- and long-term changes in the environment of Earth - the atmosphere, the oceans and the land surfaces - as well as the near space environment of Earth. All of these measurements are essential to understanding terrestrial weather, climate change, space weather hazards, and threats from asteroids. Active remote sensing measurements are of inestimable benefit to society, as we pursue the development of a technological civilization that is economically viable, and seek to maintain the quality of our life. A Strategy for Active Remote Sensing Amid Increased Demand for Spectrum describes the threats, both current and future, to the effective use of the electromagnetic spectrum required for active remote sensing. This report offers specific recommendations for protecting and making effective use of the spectrum required for active remote sensing.
Download or read book Cognitive Radio Technology written by Bruce A. Fette and published by Elsevier. This book was released on 2006-08-08 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cognitive radio technology is a smarter, faster, and more efficient way to transmit information to and from fixed, mobile, other wireless communication devices. Cognitive radio builds upon software-defined radio technology. A cognitive radio system is 'aware' of its operating environment and automatically adjusts itself to maintain desired communications—it's like having a trained operator 'inside' the radio making constant adjustments for maximum performance. Operating frequency, power output, antenna orientation/beamwidth, modulation, and transmitter bandwidth are just a few of the operating parameters that can automatically be adjusted "on the fly in a cognitive radio system. Fette has constructed a cutting-edge volume that hits all of the important issues including research, management, and support. Cognitive techniques will be discussed such as position and network awareness, infrastructure and physical and link layer concerns. Though still a nascent technology, cognitive radio is being pushed by the US military and for mission-critical civilian communications (such as emergency and public safety services).*The first book on a revolutionary technology that will be critical to military, emergency, and public safety communications *A multi-contributed volume written by the leaders in this exciting new area *Describes the location-determination capabilities of cognitive radio (the precise location of all units in a cognitive radio network can be determined in real time)
Download or read book Commerce Justice Science and Related Agencies Appropriations for 2010 Part 2 111 1 Hearings written by and published by . This book was released on 2009 with total page 1898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Commerce Justice Science and Related Agencies Appropriations for 2011 Part 2 111 2 Hearings written by and published by . This book was released on 2010 with total page 2084 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Future of the Public s Health in the 21st Century written by Institute of Medicine and published by National Academies Press. This book was released on 2003-02-01 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anthrax incidents following the 9/11 terrorist attacks put the spotlight on the nation's public health agencies, placing it under an unprecedented scrutiny that added new dimensions to the complex issues considered in this report. The Future of the Public's Health in the 21st Century reaffirms the vision of Healthy People 2010, and outlines a systems approach to assuring the nation's health in practice, research, and policy. This approach focuses on joining the unique resources and perspectives of diverse sectors and entities and challenges these groups to work in a concerted, strategic way to promote and protect the public's health. Focusing on diverse partnerships as the framework for public health, the book discusses: The need for a shift from an individual to a population-based approach in practice, research, policy, and community engagement. The status of the governmental public health infrastructure and what needs to be improved, including its interface with the health care delivery system. The roles nongovernment actors, such as academia, business, local communities and the media can play in creating a healthy nation. Providing an accessible analysis, this book will be important to public health policy-makers and practitioners, business and community leaders, health advocates, educators and journalists.
Download or read book Public Papers of the Presidents of the United States written by United States. President and published by . This book was released on 2006 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Containing the public messages, speeches, and statements of the President", 1956-1992.
Download or read book The Space Economy at a Glance 2011 written by OECD and published by OECD Publishing. This book was released on 2011-07-27 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of The Space Economy at a Glance paints an updated and richly detailed picture of the space industry, its downstream services activities, and its wider economic and social impacts.
Download or read book Strategic Theory for the 21st Century The Little Book on Big Strategy written by Harry R. Yarger and published by DIANE Publishing. This book was released on 2006 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
