• Key dates

    Issue of call for abstracts :
    mid-February 2018

    Deadline for abstract submission:
    25 May 2018

    Notification of abstract selection:
    20 June 2018

    Deadline submission of full papers:
    3 Sep 2018

    Provision of peer-review evaluation:
    3 Oct 2018

    Deadline submission of final version of papers: 23 Nov 2018


  • Logan Scott
    Logan Scott Consulting, USA

    Towards a Comprehensive Approach for Obtaining Resilient PNT

    Precise positioning and timing is becoming ever more deeply embedded into worldwide critical infrastructure. In the civil domain, numerous attacks have already been seen and the sophistication of attacks is growing. A layered defense with flexible responses provides the best hope for meeting the challenges of maintaining required navigation performance under adverse conditions. 
    No single defense or offense, no matter how good, is capable of dealing with all threats.
    A comprehensive and integrated civil policy is needed that takes into account the nature of the threats, their motivations, their likely evolution, and the costs and approaches for mitigating them. This talk explores not only the technical countermeasures available to civil users but also the legal and social engineering approaches that can militate against jamming and spoofing. The importance of penetration testing is illustrated via real-world examples (e.g. Portland) of what happens when receivers meet a threat for the first time. It is found that effective strategies for civil applications are fundamentally different from those suitable for military applications. Specific and actionable recommendations at the policy, receiver and systems level will be made.


    Logan Scott has over 35 years of military and civil GPS systems engineering experience. He is a consultant specializing in radio frequency signal processing and waveform design. At Texas Instruments, he pioneered approaches for building high-performance, jamming-resistant digital receivers. At Omnipoint (now T-Mobile), he developed spectrum sharing techniques that led to a Pioneer’s preference award from the FCC. He has been active in making national policy recommendations for civil receiver certification, jammer detection and location, spectrum protection, and cryptographic civil GNSS watermarking features. He is a cofounder of Lonestar Aerospace, an advanced decision analytics company located in Texas. Logan is a Fellow of the Institute of Navigation, a Senior Member of the IEEE, and holds 41 US patents.
    Francis Soualle
    Airbus Defence and Space, Germany

    Perspectives of PNT Services Supported by Mega-Constellations

    Recent years have been especially rich in announcements regarding the development of so-called “Mega-Constellations” composed of several hundreds of spacecrafts, if not thousands for the most ambitious forecasts. The OneWeb constellation comprising 720 LEO-satellites, the Boeing or the SpaceX “VLEO” constellations with more than 2500 spacecrafts each are first examples for such large space systems whose list will certainly continue growing according to declarations and filings. If initially designed to provide communication services, following the path of the forerunners Iridium and Globalstar systems developed in the late 90’s, this new category of constellations could also offer other types of services. This presentation will therefore investigate how Mega-Constellations could support Position Navigation and Timing (PNT) applications.
    First, the main characteristics for such new space systems will be presented, either in terms of orbital characteristics
    (e.g. spacecraft number) or cost reduction due to a fully re-thought industrialization process. Then, focus will be given to the architectural and technological specificities of LEO-based PNT systems which could represent meaningful differentiators w.r.t. Global Navigation Satellite System (GNSSs) and enhance their attractiveness. Hence, Doppler-based positioning techniques already proven in operational space systems, such as Argos or Cospas-Sarsat, shall strongly benefit of the geometry
    (i.e. velocity) and the large density of Lines-of-Sight. By combining range and range-rate positioning techniques, the availability for instantaneous and accurate positioning will thus be enhanced. Next, the role of a LEO-based PNT system within the “GNSS landscape” will also be addressed, considering either the possible complementarity or independency of services provided by both system types.  With this respect, the case of the newly introduced Satellite Time & Location (STL) system, based on the Iridium constellation, and offering a global and resilient Timing and Position service will help supporting this discussion.
    Finally, the main architectures for LEO-PNT systems will be described with special focus on the primary and ancillary payload units, but also on the supporting ground segment infrastructures.
    Francis Soualle received the Dipl.-Ing. in 1998 in Digital Communication Techniques at Supelec in Paris. Since 2000 he works at Airbus Defence and Space GmbH. He is involved in the main European RNSS programs (Galileo 1st and 2nd generation, EGNOS V3). His main focuses are GNSS architectural concepts, Orbit Determination and Timing Synchronization, signal design and receiver performances.


    Karen Van Dyke
    Director, PNT & Spectrum Management, U.S. Department of Transportation


    To be provided soon

    Karen Van Dyke serves as the Director for Positioning, Navigation, and Timing (PNT) and Spectrum Management in the U.S. Department of Transportation Office of the Assistant Secretary for Research and Technology (OST-R).  Karen has been involved in navigation-related programs at the Volpe National Transportation Systems Center for over 20 years and currently is responsible for overseeing the navigation program and development of policy positions on PNT and radiofrequency spectrum management in coordination within the Office of the Secretary of Transportation.
    Karen received her BS and MS degrees in Electrical Engineering from the University of Massachusetts at Lowell.  She served as the President of the Institute of Navigation (ION) and is a recipient of the Award for Meritorious Achievement (Silver Medal) from the Secretary of Transportation and is a Fellow of the ION. Karen was a collaborator on the book, Understanding GPS: Principles and Applications (first and second editions).
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