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Navigation

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Currently, with the popularity of smart devices, assured Position Navigation and Time (PNT) is critical for these devices and some fundamental infrastructures, i.e., the power grid. The Global Navigation Satellite System (GNSS) is dominant in providing PNT information due to its coverage and high accuracy. However, its signals are weak, and it is vulnerable; multipath and None-Line-Of-Signals (NLOS) are the major errors that occur with regard to the GNSS in applications in urban areas. Advanced signal processing methods are expected to improve its resilience and assurance. In addition, the GNSS is fragile to interference and spoofing, which should be emphasized for unmanned systems and smart devices. This Special Issue aimed to provide a platform for researchers to publish innovative work on the advanced technologies for position and navigation under GNSS signal-challenging or -denied environments.

Navigation. --- Navigation

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Missions --- Navigation.

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Die modernen Europäer sind mobil. Besonders das Auto hat die europäischen Gesellschaften seit den 1960er Jahren mobil gemacht. Zugleich bilden Immobilitäten - sei es durch Staus oder Verkehrsstörungen - alltägliche Erfahrungen. Der Abbau von Immobilität ist daher seit Beginn der Massenmobilität eine zentrale wissenschaftliche und gesellschaftliche Herausforderung, um negative Folgen wie individuellen Zeitverlust oder wirtschaftliche Schäden zu minimieren. Der Band adressiert diese Herausforderungen, indem er interdisziplinäre Ansätze zur Erforschung der Geschichte von Verkehrsinformationssystemen als Instrumente der Stauvermeidung und der Verkehrslenkung versammelt. Er fragt nach Entwicklungsverläufen, Gestaltungen und Gestaltern vom Verkehrsfunk bis zur digitalen Navigation. Mit Beiträgen von Katja Berg, Fritz Bolte, Weert Canzler, Christoph Classen, Veit Damm, Jens-Ivo Engels, Manfred Grieger, Christian Henrich-Franke, Thomas Kusche-Knežević, Rüdiger Malfeld, Oliver Michler, Marco Secci und Jörg Wehling.

Navigation --- Tables.

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Provision of air navigation services entered a new era of performance scheme. The performance scheme provides binding targets on four key performance areas of safety, capacity, environment and cost-efficiency. It is imposed that targets are fully achieved, but it is not prescribed how, this being typical for the performance based and goal oriented regulation. Those key performance areas are interlaced by proportional and inversely proportional interdependencies. Namely, for example and simplified into one sentence; if one aims to increase sector capacity with existing human resources (constant staff costs) and not investing into the technology (constant support cost) to achieve improved cost-efficiency of service provision, the resulting overloaded system might unlock the Pandora box of latent safety issues. Since failure is not an option, we - the general, migrating and traveling public, airspace users, airport operators, air navigation services providers and the economy - will gain attaining the goals of performance scheme in the process. However, un-answered cardinal question is what is the winning strategy? This book provides do-not-forget-peculiarities insight into the elements of new business model of air navigation services provision as evolution of the latter became essential.

Navigation (Aeronautics) --- Aerial navigation --- Aeronautical navigation --- Aeronautics --- Air navigation --- Avigation --- Navigation, Aerial --- Navigation --- Astronautics