Position, Navigation, and Timing Technologies in the 21st Century

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119458412
Total Pages : 1170 pages
Book Rating : 4.1/5 (194 download)

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Book Synopsis Position, Navigation, and Timing Technologies in the 21st Century by : Y. Jade Morton

Download or read book Position, Navigation, and Timing Technologies in the 21st Century written by Y. Jade Morton and published by John Wiley & Sons. This book was released on 2021-01-13 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the latest developments in PNT technologies, including integrated satellite navigation, sensor systems, and civil applications Featuring sixty-four chapters that are divided into six parts, this two-volume work provides comprehensive coverage of the state-of-the-art in satellite-based position, navigation, and timing (PNT) technologies and civilian applications. It also examines alternative navigation technologies based on other signals-of-opportunity and sensors and offers a comprehensive treatment on integrated PNT systems for consumer and commercial applications. Volume 1 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications contains three parts and focuses on the satellite navigation systems, technologies, and engineering and scientific applications. It starts with a historical perspective of GPS development and other related PNT development. Current global and regional navigation satellite systems (GNSS and RNSS), their inter-operability, signal quality monitoring, satellite orbit and time synchronization, and ground- and satellite-based augmentation systems are examined. Recent progresses in satellite navigation receiver technologies and challenges for operations in multipath-rich urban environment, in handling spoofing and interference, and in ensuring PNT integrity are addressed. A section on satellite navigation for engineering and scientific applications finishes off the volume. Volume 2 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications consists of three parts and addresses PNT using alternative signals and sensors and integrated PNT technologies for consumer and commercial applications. It looks at PNT using various radio signals-of-opportunity, atomic clock, optical, laser, magnetic field, celestial, MEMS and inertial sensors, as well as the concept of navigation from Low-Earth Orbiting (LEO) satellites. GNSS-INS integration, neuroscience of navigation, and animal navigation are also covered. The volume finishes off with a collection of work on contemporary PNT applications such as survey and mobile mapping, precision agriculture, wearable systems, automated driving, train control, commercial unmanned aircraft systems, aviation, and navigation in the unique Arctic environment. In addition, this text: Serves as a complete reference and handbook for professionals and students interested in the broad range of PNT subjects Includes chapters that focus on the latest developments in GNSS and other navigation sensors, techniques, and applications Illustrates interconnecting relationships between various types of technologies in order to assure more protected, tough, and accurate PNT Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications will appeal to all industry professionals, researchers, and academics involved with the science, engineering, and applications of position, navigation, and timing technologies. pnt21book.com

Position, Navigation, and Timing Technologies in the 21st Century, Volumes 1 and 2

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119458420
Total Pages : 2064 pages
Book Rating : 4.1/5 (194 download)

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Book Synopsis Position, Navigation, and Timing Technologies in the 21st Century, Volumes 1 and 2 by : Y. Jade Morton

Download or read book Position, Navigation, and Timing Technologies in the 21st Century, Volumes 1 and 2 written by Y. Jade Morton and published by John Wiley & Sons. This book was released on 2020-12-17 with total page 2064 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the latest developments in PNT technologies, including integrated satellite navigation, sensor systems, and civil applications Featuring sixty-four chapters that are divided into six parts, this two-volume work provides comprehensive coverage of the state-of-the-art in satellite-based position, navigation, and timing (PNT) technologies and civilian applications. It also examines alternative navigation technologies based on other signals-of-opportunity and sensors and offers a comprehensive treatment on integrated PNT systems for consumer and commercial applications. Volume 1 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications contains three parts and focuses on the satellite navigation systems, technologies, and engineering and scientific applications. It starts with a historical perspective of GPS development and other related PNT development. Current global and regional navigation satellite systems (GNSS and RNSS), their inter-operability, signal quality monitoring, satellite orbit and time synchronization, and ground- and satellite-based augmentation systems are examined. Recent progresses in satellite navigation receiver technologies and challenges for operations in multipath-rich urban environment, in handling spoofing and interference, and in ensuring PNT integrity are addressed. A section on satellite navigation for engineering and scientific applications finishes off the volume. Volume 2 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications consists of three parts and addresses PNT using alternative signals and sensors and integrated PNT technologies for consumer and commercial applications. It looks at PNT using various radio signals-of-opportunity, atomic clock, optical, laser, magnetic field, celestial, MEMS and inertial sensors, as well as the concept of navigation from Low-Earth Orbiting (LEO) satellites. GNSS-INS integration, neuroscience of navigation, and animal navigation are also covered. The volume finishes off with a collection of work on contemporary PNT applications such as survey and mobile mapping, precision agriculture, wearable systems, automated driving, train control, commercial unmanned aircraft systems, aviation, and navigation in the unique Arctic environment. In addition, this text: Serves as a complete reference and handbook for professionals and students interested in the broad range of PNT subjects Includes chapters that focus on the latest developments in GNSS and other navigation sensors, techniques, and applications Illustrates interconnecting relationships between various types of technologies in order to assure more protected, tough, and accurate PNT Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications will appeal to all industry professionals, researchers, and academics involved with the science, engineering, and applications of position, navigation, and timing technologies. pnt21book.com

European Navigation Into the 21st Century

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Author :
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (29 download)

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Book Synopsis European Navigation Into the 21st Century by :

Download or read book European Navigation Into the 21st Century written by and published by . This book was released on 1991 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Navigating Terrains of War

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Author :
Publisher : Berghahn Books
ISBN 13 : 9781845451493
Total Pages : 274 pages
Book Rating : 4.4/5 (514 download)

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Book Synopsis Navigating Terrains of War by : Henrik Vigh

Download or read book Navigating Terrains of War written by Henrik Vigh and published by Berghahn Books. This book was released on 2006 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through the concept of "social navigation," this book sheds light on the mobilization of urban youth in West Africa. Social navigation offers a perspective on praxis in situations of conflict and turmoil. It provides insights into the interplay between objective structures and subjective agency, thus enabling us to make sense of the opportunistic, sometimes fatalistic and tactical ways in which young people struggle to expand the horizons of possibility in a world of conflict, turmoil and diminishing resources.

Pinpoint: How GPS is Changing Technology, Culture, and Our Minds

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Author :
Publisher : W. W. Norton & Company
ISBN 13 : 0393244997
Total Pages : 277 pages
Book Rating : 4.3/5 (932 download)

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Book Synopsis Pinpoint: How GPS is Changing Technology, Culture, and Our Minds by : Greg Milner

Download or read book Pinpoint: How GPS is Changing Technology, Culture, and Our Minds written by Greg Milner and published by W. W. Norton & Company. This book was released on 2016-05-03 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: "One of the most mesmerizing and exhilarating, yet alarming modern technology books…an extraordinary tale." —Gillian Tett, Financial Times Pinpoint tells the fascinating story of a hidden system that touches nearly every aspect of modern life. Tracking the development of GPS from its origins as a bomb guidance system to its present ubiquity, Greg Milner examines the technology’s double-edged effect on the way we live, work, and travel. Savvy and original, this sweeping scientific history offers startling insight into how humans understand their place in the world.

Quebec Cinema in the 21st Century

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Author :
Publisher : Liverpool University Press
ISBN 13 : 1835533043
Total Pages : 213 pages
Book Rating : 4.8/5 (355 download)

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Book Synopsis Quebec Cinema in the 21st Century by : Michael Gott

Download or read book Quebec Cinema in the 21st Century written by Michael Gott and published by Liverpool University Press. This book was released on 2024-02-06 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of ten chapters and three original interviews with Québécois filmmakers focuses on the past two decades of Quebec cinema and takes an in-depth look at a (primarily) Montreal-based filmmaking industry whose increasingly diverse productions continue to resist the hegemony of Hollywood and to exist as a visible and successful hub of French-language – and ever more multilingual – cinema in North America. This volume picks up where Bill Marshall’s 2001 Quebec National Cinema ends to investigate the inherently global nature of Quebec’s film industry and cinematic output since the beginning of the new millennium. Through their analyses of contemporary films (Une colonie, Avant les rues, Bon cop, bad cop, Les Affamés, Tom à la ferme, Uvanga, among others), directors (including Xavier Dolan, Denis Côté, Sophie Desrape, Chloé Robichaud, Jean-Marc Vallée, and Monia Chokri) and genres (such as the buddy comedy and the zombie film), our authors examine the growing tension between Quebec cinema as a “national cinema” and as an art form that reflects the transnationalism of today’s world, a new form of fluidity of individual experiences, and an increasing on-screen presence of Indigenous subjects, both within and outside the borders of the province. The book concludes with specially conducted interviews with filmmakers Denis Chouinard, Bachir Bensadekk, and Marie-Hélène Cousineau, who provide their views and insights on contemporary Quebec filmmaking.

PISA 21st-Century Readers Developing Literacy Skills in a Digital World

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Author :
Publisher : OECD Publishing
ISBN 13 : 9264670971
Total Pages : 216 pages
Book Rating : 4.2/5 (646 download)

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Book Synopsis PISA 21st-Century Readers Developing Literacy Skills in a Digital World by : OECD

Download or read book PISA 21st-Century Readers Developing Literacy Skills in a Digital World written by OECD and published by OECD Publishing. This book was released on 2021-05-04 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Literacy in the 21st century is about constructing and validating knowledge. Digital technologies have enabled the spread of all kinds of information, displacing traditional formats of usually more carefully curated information such as encyclopaedias and newspapers.

21st Century Skills

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118157060
Total Pages : 263 pages
Book Rating : 4.1/5 (181 download)

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Book Synopsis 21st Century Skills by : Bernie Trilling

Download or read book 21st Century Skills written by Bernie Trilling and published by John Wiley & Sons. This book was released on 2012-02-07 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important resource introduces a framework for 21st Century learning that maps out the skills needed to survive and thrive in a complex and connected world. 21st Century content includes the basic core subjects of reading, writing, and arithmetic-but also emphasizes global awareness, financial/economic literacy, and health issues. The skills fall into three categories: learning and innovations skills; digital literacy skills; and life and career skills. This book is filled with vignettes, international examples, and classroom samples that help illustrate the framework and provide an exciting view of twenty-first century teaching and learning. Explores the three main categories of 21st Century Skills: learning and innovations skills; digital literacy skills; and life and career skills Addresses timely issues such as the rapid advance of technology and increased economic competition Based on a framework developed by the Partnership for 21st Century Skills (P21) The book contains a video with clips of classroom teaching. For more information on the book visit www.21stcenturyskillsbook.com.

The Next 100 Years

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Author :
Publisher : Anchor
ISBN 13 : 0385522940
Total Pages : 274 pages
Book Rating : 4.3/5 (855 download)

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Book Synopsis The Next 100 Years by : George Friedman

Download or read book The Next 100 Years written by George Friedman and published by Anchor. This book was released on 2009-01-27 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Conventional analysis suffers from a profound failure of imagination. It imagines passing clouds to be permanent and is blind to powerful, long-term shifts taking place in full view of the world.” —George Friedman In his long-awaited and provocative new book, George Friedman turns his eye on the future—offering a lucid, highly readable forecast of the changes we can expect around the world during the twenty-first century. He explains where and why future wars will erupt (and how they will be fought), which nations will gain and lose economic and political power, and how new technologies and cultural trends will alter the way we live in the new century. The Next 100 Years draws on a fascinating exploration of history and geopolitical patterns dating back hundreds of years. Friedman shows that we are now, for the first time in half a millennium, at the dawn of a new era—with changes in store, including: • The U.S.-Jihadist war will conclude—replaced by a second full-blown cold war with Russia. • China will undergo a major extended internal crisis, and Mexico will emerge as an important world power. • A new global war will unfold toward the middle of the century between the United States and an unexpected coalition from Eastern Europe, Eurasia, and the Far East; but armies will be much smaller and wars will be less deadly. • Technology will focus on space—both for major military uses and for a dramatic new energy resource that will have radical environmental implications. • The United States will experience a Golden Age in the second half of the century. Written with the keen insight and thoughtful analysis that has made George Friedman a renowned expert in geopolitics and forecasting, The Next 100 Years presents a fascinating picture of what lies ahead. For continual, updated analysis and supplemental material, go to www.geopoliticalfutures.com.

Supernavigators

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Author :
Publisher : The Experiment
ISBN 13 : 1615196692
Total Pages : 320 pages
Book Rating : 4.6/5 (151 download)

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Book Synopsis Supernavigators by : David Barrie

Download or read book Supernavigators written by David Barrie and published by The Experiment. This book was released on 2020-06-09 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Just astonishing . . . Our natural navigational capacities are no match for those of the supernavigators in this eye-opening book.”—Frans de Waal, The New York Times Book Review Publisher's note: Supernavigators was published in the UK under the title Incredible Journeys. Animals plainly know where they’re going, but how they know has remained a stubborn mystery—until now. Supernavigators is a globe-trotting voyage of discovery alongside astounding animals of every stripe: dung beetles that steer by the Milky Way, box jellyfish that can see above the water (with a few of their twenty-four eyes), sea turtles that sense Earth’s magnetic field, and many more. David Barrie consults animal behaviorists and Nobel Prize–winning scientists to catch us up on the cutting edge of animal intelligence—revealing these wonders in a whole new light.

The History of Celestial Navigation

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Author :
Publisher : Springer Nature
ISBN 13 : 3030436314
Total Pages : 342 pages
Book Rating : 4.0/5 (34 download)

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Book Synopsis The History of Celestial Navigation by : P. Kenneth Seidelmann

Download or read book The History of Celestial Navigation written by P. Kenneth Seidelmann and published by Springer Nature. This book was released on 2020-06-29 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume charts the history of celestial navigation over the course of five centuries. Written by a group of historians and scientists, it analyzes how competing navigation systems, technologies, and institutions emerged and developed, with a focus on the major players in the US and the UK. The history covers the founding of the Royal Observatory; the first printing of a Nautical Almanac; the founding of the US and UK Nautical Almanac Offices; the creation of international standards for reference systems and astronomical constants; and the impact of 20th century technology on the field, among other topics. Additionally, the volume analyzes the present role and status of celestial navigation, particularly with respect to modern radio and satellite navigation systems. With its diverse authorship and nontechnical language, this book will appeal to any reader interested in the history of science, technology, astronomy, and navigation over the ages.

Telework in the 21st Century

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Author :
Publisher : Edward Elgar Publishing
ISBN 13 : 1789903750
Total Pages : 345 pages
Book Rating : 4.7/5 (899 download)

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Book Synopsis Telework in the 21st Century by : Jon C. Messenger

Download or read book Telework in the 21st Century written by Jon C. Messenger and published by Edward Elgar Publishing. This book was released on 2019 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technological developments have enabled a dramatic expansion and also an evolution of telework, broadly defined as using ICTs to perform work from outside of an employer’s premises. This volume offers a new conceptual framework explaining the evolution of telework over four decades. It reviews national experiences from Argentina, Brazil, India, Japan, the United States, and ten EU countries regarding the development of telework, its various forms and effects. It also analyses large-scale surveys and company case studies regarding the incidence of telework and its effects on working time, work-life balance, occupational health and well-being, and individual and organizational performance.

Air Transport in the 21st Century

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Author :
Publisher : Routledge
ISBN 13 : 1351959891
Total Pages : 341 pages
Book Rating : 4.3/5 (519 download)

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Book Synopsis Air Transport in the 21st Century by : John F. O'Connell

Download or read book Air Transport in the 21st Century written by John F. O'Connell and published by Routledge. This book was released on 2016-12-05 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airlines are buffeted by fluctuating political and economic landscapes, ever-changing competition, technology developments, globalization, increasing deregulation and evolving customer requirements. As a consequence all sectors of the air transport industry are in a constant state of flux. The principle aim of this book is to review current trends in the airline industry and its related suppliers, thereby providing an insight into the forces that are changing its dynamics. The factors that are reshaping the structure of the industry are examined with a view to identifying the key issues whose impact will be critical in the future. The book features two very distinct sections. The first contains short contributions from industry executives at CEO/VP level from airlines, aircraft/engine manufacturers, safety and navigational provider organisations, who have set out their take of where the airline industry is heading. This commercial input sets the scene for the book and provides the bridge to the second section, which is composed of 18 chapters written by distinguished academic authors. Each chapter presents a valuable insight into a specific area of the air transport industry, including: airlines, airports, cargo, deregulation, the environment, navigation, strategy, information technology, security and tourism. The shared objective of the authors is to describe and explain the core competencies that are determining the current shape of the industry and to examine the forces that will change its direction going forward. The book is written in a management style and will appeal to all levels of personnel who work for airlines across the world. It is also written for airport authorities, aerospace manufacturers, regulatory and government transportation agencies, researchers and students of aviation management, transport studies, tourism and the wider air transport industry.

U.S. Conflicts in the 21st Century [3 volumes]

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Author :
Publisher : Bloomsbury Publishing USA
ISBN 13 : 1440838798
Total Pages : 1337 pages
Book Rating : 4.4/5 (48 download)

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Book Synopsis U.S. Conflicts in the 21st Century [3 volumes] by : Spencer C. Tucker

Download or read book U.S. Conflicts in the 21st Century [3 volumes] written by Spencer C. Tucker and published by Bloomsbury Publishing USA. This book was released on 2015-12-14 with total page 1337 pages. Available in PDF, EPUB and Kindle. Book excerpt: This three-volume reference work provides an up-to-date presentation and analysis of the U.S. wars of the 21st century, addressing their backgrounds, causes, courses, and consequences. It serves as an indispensable resource for students seeking to understand the role of the United States in the world today. Addressing the U.S. conflicts in Iraq, Afghanistan, and the Global War on Terror from the year 2001 to the present, this comprehensive, three-volume encyclopedia covers the significant individuals, key events, and important places involved in these recent military events. Beginning with the rise of Al Qaeda in the 1990s and the attacks on September 11, 2001, and covering events through ISIS's dramatic surge in Iraq and Syria, the hundreds of detailed entries also examine historical trends; nations and ethnicities involved in the conflicts; influential figures and organizations; economic, political, diplomatic, and cultural influences; wars, campaigns, and battles; and important weapons systems. The set's A–Z organization makes it an easy-to-use ready reference for high school and college students. Perspective essays on several controversial topics—such as the use of torture and the effects of the Patriot Act—serve to inspire readers to apply critical thinking. A detailed chronology is provided to help students place all the important events that have occurred in the Afghanistan War, Iraq War, and War on Terror. Each of the chronologically arranged primary documents is introduced with a brief overview to provide important background information and context.

Global Navigation Satellite Systems, Inertial Navigation, and Integration

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118523539
Total Pages : 441 pages
Book Rating : 4.1/5 (185 download)

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Book Synopsis Global Navigation Satellite Systems, Inertial Navigation, and Integration by : Mohinder S. Grewal

Download or read book Global Navigation Satellite Systems, Inertial Navigation, and Integration written by Mohinder S. Grewal and published by John Wiley & Sons. This book was released on 2015-03-11 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: An updated guide to GNSS, and INS, and solutions to real-world GNSS/INS problems with Kalman filtering Written by recognized authorities in the field, this third edition of a landmark work provides engineers, computer scientists, and others with a working familiarity of the theory and contemporary applications of Global Navigation Satellite Systems (GNSS), Inertial Navigational Systems, and Kalman filters. Throughout, the focus is on solving real-world problems, with an emphasis on the effective use of state-of-the-art integration techniques for those systems, especially the application of Kalman filtering. To that end, the authors explore the various subtleties, common failures, and inherent limitations of the theory as it applies to real-world situations, and provide numerous detailed application examples and practice problems, including GNSS-aided INS (tightly and loosely coupled), modeling of gyros and accelerometers, and SBAS and GBAS. Drawing upon their many years of experience with GNSS, INS, and the Kalman filter, the authors present numerous design and implementation techniques not found in other professional references. The Third Edition includes: Updates on the upgrades in existing GNSS and other systems currently under development Expanded coverage of basic principles of antenna design and practical antenna design solutions Expanded coverage of basic principles of receiver design and an update of the foundations for code and carrier acquisition and tracking within a GNSS receiver Expanded coverage of inertial navigation, its history, its technology, and the mathematical models and methods used in its implementation Derivations of dynamic models for the propagation of inertial navigation errors, including the effects of drifting sensor compensation parameters Greatly expanded coverage of GNSS/INS integration, including derivation of a unified GNSS/INS integration model, its MATLAB® implementations, and performance evaluation under simulated dynamic conditions The companion website includes updated background material; additional MATLAB scripts for simulating GNSS-only and integrated GNSS/INS navigation; satellite position determination; calculation of ionosphere delays; and dilution of precision.

Finding North

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Author :
Publisher : Macmillan + ORM
ISBN 13 : 1250053897
Total Pages : 240 pages
Book Rating : 4.2/5 (5 download)

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Book Synopsis Finding North by : George Michelsen Foy

Download or read book Finding North written by George Michelsen Foy and published by Macmillan + ORM. This book was released on 2016-05-10 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Navigation is the key human skill. It's something we do everywhere, whether feeling our way through a bedroom in the dark, or charting a ship's course. But how does navigation affect our brains, our memory, ourselves? Blending scientific research and memoir, and written in beautiful prose, Finding North starts with a quest by the author to understand this most basic of human skills---and why it's in mortal peril. In 1844, Foy's great-great grandfather, captain of a Norwegian cargo ship, perished at sea after getting lost in a snowstorm. Foy decides to unravel the mystery surrounding Halvor Michelsen's death---and the roots of his own obsession with navigation---by re-creating his ancestor's trip using only period instruments. Beforehand, he meets a colorful cast of characters to learn whether men really have better directional skills than women, how cells, eels, and spaceships navigate; and how tragedy results from GPS glitches. He interviews a cabby who has memorized every street in London, sails on a Haitian cargo sloop, and visits the site of a secret navigational cult in Greece. At the heart of Foy's story is this fact: navigation and the brain's memory centers are inextricably linked. As Foy unravels the secret behind Halvor's death, he also discovers why forsaking our navigation skills in favor of GPS may lead not only to Alzheimers and other diseases of memory, but to losing a key part of what makes us human.

The Case for U.S. Nuclear Weapons in the 21st Century

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Author :
Publisher : Stanford University Press
ISBN 13 : 0804797153
Total Pages : 351 pages
Book Rating : 4.8/5 (47 download)

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Book Synopsis The Case for U.S. Nuclear Weapons in the 21st Century by : Brad Roberts

Download or read book The Case for U.S. Nuclear Weapons in the 21st Century written by Brad Roberts and published by Stanford University Press. This book was released on 2015-12-09 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: “An excellent contribution to the debate on the future role of nuclear weapons and nuclear deterrence in American foreign policy.” ―Contemporary Security Policy This book is a counter to the conventional wisdom that the United States can and should do more to reduce both the role of nuclear weapons in its security strategies and the number of weapons in its arsenal. The case against nuclear weapons has been made on many grounds—including historical, political, and moral. But, Brad Roberts argues, it has not so far been informed by the experience of the United States since the Cold War in trying to adapt deterrence to a changed world, and to create the conditions that would allow further significant changes to U.S. nuclear policy and posture. Drawing on the author’s experience in the making and implementation of U.S. policy in the Obama administration, this book examines that real-world experience and finds important lessons for the disarmament enterprise. Central conclusions of the work are that other nuclear-armed states are not prepared to join the United States in making reductions, and that unilateral steps by the United States to disarm further would be harmful to its interests and those of its allies. The book ultimately argues in favor of patience and persistence in the implementation of a balanced approach to nuclear strategy that encompasses political efforts to reduce nuclear dangers along with military efforts to deter them. “Well-researched and carefully argued.” ―Foreign Affairs