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Author: Richard Mason
Publisher:
ISBN: 9781977403629
Category : Business & Economics
Languages : en
Pages : 276
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Book Description
The authors assess the costs associated with realistic threats to domestic, nonmilitary uses of the Global Positioning System (GPS), and consider possible additions to the positioning, navigation, and timing ecosystem in light of those costs.
Author: Richard Mason
Publisher:
ISBN: 9781977403629
Category : Business & Economics
Languages : en
Pages : 276
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Book Description
The authors assess the costs associated with realistic threats to domestic, nonmilitary uses of the Global Positioning System (GPS), and consider possible additions to the positioning, navigation, and timing ecosystem in light of those costs.
Author: John W. Betz
Publisher:
ISBN:
Category : Aids to navigation
Languages : en
Pages : 8
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Book Description
This document summarizes the results of a MITRE initiative to define a national strategy for navigation and timing. The Global Positioning System (GPS) currently provides the foundation for our nation’s navigation and timing. GPS's many attributes ensure that it will remain the foundation for decades to come. Yet reliance on GPS is excessive, especially since GPS and its uses are currently fragile, and threats continue to emerge and grow. In response, various alternative sources of position, velocity, and time (PVT) are being advocated, often without adequate assessment or planning for how they can cost-effectively meet future needs and address future threats. A national strategy is needed to efficiently and effectively focus scarce resources, defining a consistent, long-term way ahead. This document describes such a strategy.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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Book Description
An interagency team, sponsored by the Departments of Defense and Transportation and led by the National Security Space Office, has developed a National Positioning, Navigation, and Timing (PNT) Architecture that will substantially affect future government- and commercially-provided PNT products and services. The Architecture envisions sustained U.S. global leadership in PNT through a strategy that makes greater PNT capabilities more generally available. The strategy is supported by vectors, or enterprise architecture elements, for using multiple PNT-related phenomenologies and interchangeable PNT solutions, PNT and Communications synergy, and cooperative organizational structures.
Author:
Publisher:
ISBN: 9780660375960
Category :
Languages : en
Pages : 2
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Book Description
Author:
Publisher:
ISBN:
Category : Global Positioning System
Languages : en
Pages : 18
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Book Description
Author: U S Government Accountability Office (G
Publisher: BiblioGov
ISBN: 9781289291655
Category :
Languages : en
Pages : 64
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Book Description
The Global Positioning System (GPS), which provides positioning, navigation, and timing data to users worldwide, has become essential to U.S. national security and a key tool in an expanding array of public service and commercial applications at home and abroad. The United States provides GPS data free of charge. The Air Force, which is responsible for GPS acquisition, is in the process of modernizing GPS. In light of the importance of GPS, the modernization effort, and international efforts to develop new systems, GAO was asked to undertake a broad review of GPS. Specifically, GAO assessed progress in (1) acquiring GPS satellites, (2) acquiring the ground control and user equipment necessary to leverage GPS satellite capabilities, and evaluated (3) coordination among federal agencies and other organizations to ensure GPS missions can be accomplished. To carry out this assessment, GAO's efforts included reviewing and analyzing program documentation, conducting its own analysis of Air Force satellite data, and interviewing key military and civilian officials.
Author: Y. Jade Morton
Publisher: John Wiley & Sons
ISBN: 1119458412
Category : Science
Languages : en
Pages : 1170
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Book Description
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
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309176441
Category : Science
Languages : en
Pages : 284
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Book Description
The Global Positioning System (GPS) is a satellite-based navigation system that was originally designed for the U.S. military. However, the number of civilian GPS users now exceeds the military users, and many commercial markets have emerged. This book identifies technical improvements that would enhance military, civilian, and commercial use of the GPS. Several technical improvements are recommended that could be made to enhance the overall system performance.
Author: U S Government Accountability Office (G
Publisher: BiblioGov
ISBN: 9781289290320
Category :
Languages : en
Pages : 72
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Book Description
The Global Positioning System (GPS) provides positioning, navigation, and timing (PNT) data to users worldwide. The U.S. Air Force, which is responsible for GPS acquisition, is in the process of modernizing the system. Last year GAO reported that it was uncertain whether the Air Force could acquire new satellites in time to maintain GPS service without interruption. GAO was asked to assess (1) the status of Air Force efforts to develop and deliver new GPS satellites, the availability of the GPS constellation, and the potential impacts on users if the constellation availability diminishes below its committed level of performance; (2) efforts to acquire the GPS ground control and user equipment necessary to leverage GPS satellite capabilities; (3) the GPS interagency requirements process; and (4) coordination of GPS efforts with the international PNT community. To do this, GAO analyzed program documentation and Air Force data on the GPS constellation, and interviewed officials from DOD and other agencies.
Author: Brandon J. Gray
Publisher:
ISBN:
Category : Aids to air navigation
Languages : en
Pages : 32
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Book Description
"This research focuses on the need for the United States Government to expand the Positioning, Navigation, and Timing (PNT) portfolio beyond the use of the Global Positioning System (GPS) and Inertial Navigation Systems (INS) solutions. The central argument of this discussion is focused on the integration of a multiple Global Navigation Satellite System (GNSS) solution in all of our weapon systems to overcome the primary military challenge of the critical PNT challenges of critical timing, navigation, and positioning in a contested, degraded, and operational limited operating environment. The alternative navigation and timing portfolio expands beyond GNSS through adding robust timing architectures and operational depth through the incorporation of upgraded INS systems, critical network timing, and the use of both large and small atomic clock systems on the highest priority mission systems. This research also endeavors to make the connections between GPS and our 21st Century way of life and the other instruments of national power. GPS and the PNT mission set is the cornerstone of our information age technology. The diversification beyond GPS-only PNT solutions is necessary to ensure our national infrastructure, economy, and military dominance for the next century. It concludes with recommendations for how the Department of Defense and the entire United States Government (USG) should act now to implement changes for the United States PNT architecture to overcome the challenges of today and positioned to maintain PNT and NAVWAR dominance in the 21st Century."--Abstract.
