The 33rd International Technical Meeting of the Satellite Division of the Institute of Navigation

September 21-25, 2020Exhibit Hall: September 23 and 24St. Louis Union Station HotelSt. Louis, Missouri

ion.org/gnss

®

2020CALL FOR ABSTRACTS

Non‑profitU.S. Postage

PAIDPermit No. 425Southern, MD

REGISTRATION INFORMATIONRegister online: Go to www.ion.org/gnss (available summer 2020).

Full registration includes all technical sessions, access to the exhibit hall, ION meal functions and events, and proceedings. Individual registration benefits are non‑transferable.

REGISTRATION RATESFor attendees staying at an official conference hotel, and claiming hotel discount:

• Member: $980; after August 21, $1,180 • Non‑member: $1,060; after August 21, $1,260• Single day: $500 (does not include proceedings); after August 21, $660• Student: $600; after August 21, $800

HOTEL RESERVATIONSFor easy online hotel reservations: Go to www.ion.org/gnss/hotel.cfm for a list of hotels, rates, and a map. Click the “reserve now” button and follow the directions. You will receive an immediate online confirmation.

Remember, make your hotel reservation (and provide your hotel confirmation number when registering) by August 21 to get the discounted ION GNSS+ conference rates!

All technical sessions will be held at the St. Louis Union Station Hotel.

EXHIBITOR INFORMATIONThe ION GNSS+ conference is the largest GNSS‑related trade show in the world! For exhibit information, contact Ken Esthus, ION National Office via phone at 703‑366‑2723, fax at 703‑366‑2724, or via email at kesthus@ion.org. You can also visit www.ion.org.

ION GNSS+2020

THE INSTITUTE OF NAVIGATION8551 Rixlew Lane, Suite 360Manassas, Virginia 20109

ION GNSS+ 2020GNSS + Other Sensors in Today’s Marketplace

Abstracts Due March 5

ABSTRACT SUBMISSION REQUIREMENTSReview the submission and publication requirements below and note different requirements based on different tracks.

To submit an abstract, sign into the ION Abstract Management Portal (AMP) at www. ion.org/abstracts. If you have not used AMP before, click “Create My Account.” Once signed in, click on “ION GNSS+” and complete the form.

Abstracts should be submitted electronically via AMP no later than March 5.

COMMERCIAL AND POLICY TRACKSContent: Abstracts should describe objectives, anticipated or actual results, conclusions, any key innovative steps and the significance of your work.

Acceptance: Acceptance to the ION GNSS+ conference is competitive. Speakers will be notified of acceptance after April 22 and will be provided with an electronic presentation kit with presentation and publication guidelines. All authors attending are required to pay registration fees.

Proceedings Publication: Presentations submitted through AMP by October 5 will be included in the proceedings. A full technical paper is optional and may be published on a voluntary basis. Presentations not representative of the original abstract submitted will NOT be included in the conference proceedings, regardless of whether or not they were presented at the conference, and may affect the acceptance of future abstracts. Papers submitted in these tracks are not eligible for peer review.

RESEARCH TRACKSContent: Extended abstracts (500‑2500 words) are required. Abstracts should describe objectives, anticipated or actual results, conclusions, key innovative steps and the significance of your work. Abstracts not meeting the 500 word minimum shall not be forwarded to the program committee for review.

Peer Review Option: Authors whose abstracts are accepted in these sessions (either as a primary or as an alternate presenter) will have the option to have their paper peer reviewed. Peer reviews will be accomplished by reviewers and supervised by a committee. To be designated as peer reviewed:

• completed manuscript must be uploaded to AMP by June 30• manuscript must pass initial peer review (note that there will be no secondary reviews)• one of the authors must be present at the conference and prepared to present the paper

Acceptance: Acceptance to the ION GNSS+ conference is competitive. Speakers will be notified of acceptance after April 22 and will be provided with an electronic presentation kit with presentation and publication guidelines. All authors attending are required to pay registration fees.

Proceedings Publication: Papers meeting all the peer review requirements will be designated as “peer reviewed” in the conference proceedings. Papers not meeting the peer review requirements will be published in the proceedings without the peer reviewed designation. Manuscripts not representative of the original abstract submitted will NOT be presented or included in the conference proceedings. While final manuscripts are required for peer‑review by June 30, corrected/updated manuscripts will be accepted through October 5.

CONFERENCE INFORMATIONINTERNATIONAL PARTICIPANTSWe recommend that you apply for a visa at least three months in advance. Travelers from all visa waiver program countries must present either a machine‑readable passport or a U.S. Visa. For general information about visas go to http://www.nationalacademies.org/visas/

Conference attendees requesting a visa letter to attend a conference must:

1) Submit the visa letter request form located at www.ion.org/gnss; and

2) Register and pay the conference registration fees before a letter of invitation will be sent. Exemptions to this policy apply only to those authors whose papers have been accepted for presentation, company personnel working in the exhibit area or trade associated press.

STUDENT PAPER AWARDSStudent paper awards will be awarded on a competitive basis. Papers submitted by February 1 will be reviewed for technical content, clarity and presentation by a selection committee. The primary student author of each paper selected for presentation will receive a travel expense stipend, conference registration and publication of the selected paper in the ION GNSS+ proceedings. For information on eligibility and deadlines, please visit www.ion.org/governance/student‑paper‑awards.cfm

JOURNAL PUBLICATIONOutstanding technical papers are reviewed for possible publication in the ION’s archival journal NAVIGATION. NAVIGATION is indexed in the Thomson Reuters Science Citation Index Expanded (also known as SciSearch®), Thomson Reuters Journal Citation Reports/Science Edition, and Thomson Reuters Current Contents®/Engineering Computing and Technology. As of 2018, NAVIGATION has a 1.6 Journal Impact Factor (JIF).

For updated conference information, see www.ion.org/gnss

Short Courses: Sept. 21 • Tutorials: Sept. 22 • Show Dates: Sept. 23-24

TECHNICAL COMMITTEESatellite Division ChairDr. Chris Hegarty, The MITRE Corporation

Program Co-ChairsDr. Di Qiu, Polaris Wireless, Inc.Dr. André Hauschild, German Aerospace Center (DLR), Germany

Technical ChairsCommercial and Policy TracksDr. Alexander Mitelman, AMM Technical ConsultingErnesto Etienne, Federal Aviation AdministrationDr. Jan Wendel, Airbus Defence and Space GmbH, GermanyResearch TracksDr. Jason Gross, West Virginia UniversityDr. Xiaochun Lu, Chinese Academy of Sciences, ChinaDr. Christian Tiberius, TU Delft, The Netherlands

Tutorials ChairDr. John Raquet, IS4S

Plenary Session ChairPatricia Doherty, Boston College

The 33rd International Technical Meeting of the Satellite Division of the Institute of Navigation

September 21-25, 2020Exhibit Hall: September 23 and 24St. Louis Union Station HotelSt. Louis, Missouri

ion.org/gnss

®

2020CALL FOR ABSTRACTS

SEPTEMBER 21-25, 2020GNSS + Other Sensors in Today’s Marketplace

2020GNSS + Other Sensors in Today’s MarketplaceThe 33rd International Technical Meeting of the Satellite Division of the Institute of Navigation

PARTICIPATEPRESENTPUBLISHSeptember 21-25, 2020 • St. Louis Union Station Hotel • St. Louis, Missouri

September 21-25, 2020

The Institute of Navigation • www.ion org • September 20-25, 2020 • Short Courses: September 20 • Tutorials: September 21 • Show Dates: September 23-24 • St. Louis Union Station Hotel • St. Louis, Missouri • www.ion.org

ION GNSS+2020COMMERCIAL AND POLICY TRACKS Program Co-chair: Dr. Di Qiu, Polaris Wireless, Inc. RESEARCH TRACKS Program Co-chair: Dr. André Hauschild, German Aerospace Center (DLR), Germany

ABSTRACTS DUE MARCH 5GNSS+ Other Sensors in Today’s Marketplace

Track A: High Performance and Safety Critical ApplicationsTrack Chair: Dr. Jan Wendel, Airbus, Germany

Augmentation Services, Integrity and AuthenticationModernization of PPP techniques and provision of new products and services enhancing preci-sion, integrity, robustness and trust. Use of emerging GNSS and SBAS authentication signals and services. Network-based techniques, integer ambiguity resolution, bandwidth efficient communication, and multi-GNSS/frequency solutions. Server/Network based services for authentication, integrity and precision. Use cases and applications highlighting the benefits and challenges of PPP solutions from a user perspective. Augmentation services for mobile applica-tions. High performance and safety critical applications using SBAS and GBAS.Co-chairs: Dr. Chris Wullems, Qascom, Australia and Javier Simon, European GNSS Agency (GSA), Czech Republic

Autonomous ApplicationsAdvances in navigation for assisted and autonomous vehicle applications as well as mobile platforms. Evolution of machine learning and other artificial intelligence technologies employed in autonomous navigation. Navigation cybersecurity, emerging cyber threats and mitigations. Guided vehicle systems and pilot assistance with enhanced safety, availability and efficiency in challenging environments. Addressing of safety, integrity and certification requirements for autonomous navigation and guidance. Assistance and cloud based technologies for robust and trusted autonomous systems.Co-chairs: Enrique Domínguez Tijero, GMV, Spain and Sandy Kennedy, Hexagon, Canada

Aviation and AeronauticsTechnologies to enhance safety, robustness and assurance and improve efficiency of air opera-tions and space missions. Rockets and Autonomous Flight Termination System (AFTS). Adoption and impact assessment of modernized GNSS and SBAS, and use of new signal and services. Aircraft integration of GNSS technologies for civil aviation. Performance monitoring and alerting requirements. Future integrity, availability, accuracy and security requirements. Airborne GNSS and sensor integrations for current and novel applications.Co-chairs: Dr. Juan Blanch, Stanford University and Dr. Yawei Zhai, Shanghai Jiao Tong Univer-sity, China

Land-Based ApplicationsTechnologies to address safety aspects of land-based vehicle navigation. Sensor fusion, new algorithms, Artificial Intelligence and Machine Learning, GNSS augmentation and multi-GNSS system use to improve performance in accuracy, availability and reliability. Integration of 5G and LEO based positioning in land applications for enhanced assurance, integrity and robustness. Applications of GNSS authentication services in the road segment and railway. Advances in the dual frequency and triple frequency use of GNSS for land based applications. Co-chairs: Dr. Miguel Azaola, GMV, Spain and Lionel Ries, ESA, The Netherlands

Marine Applications and Search and RescueConcepts, innovation and emerging applications in marine navigation and search and rescue; e.g. autonomous vessels; vessel traffic management; buoy placement; underwater surveying; navigational hazard location and mapping; and activities such as fishing, oceanography and oil and gas exploitation. GNSS augmentations (MF beacons, SBAS), terrestrial backup systems and integration with other vessel sensors. Addressing maritime cybersecurity (authentication mechanisms), as well as integrity and continuity requirements to guarantee a resilient PNT; and together with a fast emergency response (Search and Rescue, Tsunamis detection) to ensure the safety of life at sea.Co-Chairs: Dr. Alan Grant, General Lighthouse Authorities, UK and Dr. Manuel Lopez Martinez, GMV, Spain

Panel: Emerging Autonomous Applications – Challenges and Prospects The number of applications enabled by autonomous platforms is increasing rapidly. Examples are first tests of passenger transport with drone taxis and autonomous driving for personal transportation. Autonomous trains are already connecting airport terminals within the public transport infrastructure in some cities. Other applications include autonomous forklifts operat-ing in storage halls and robots that assist in housekeeping or nursing. While some of these applications are mature, others are experimental. This panel discussion will present current and future practical scenarios for the use of autonomous platforms and address the challenges and limitations connected to these applications, technically and legally, and will predict the impact of these applications on society and daily life. Moderators: Dr. Naser El-Sheimy, University of Calgary, Canada and Rui Tang, ZongMu Technology Ltd., China

Track B: Status and Future Trends in GNSSTrack Chair: Ernesto Etienne, Federal Aviation Administration

Applications in Sectorial PoliciesDevelopment of sectorial policies involving the use of satellite navigation technology; integrated navigation systems; challenges in terrestrial and urban environments; image based navigation; equipage mandates; timing for critical infrastructure; liability critical applications; digital tachograph for road tracking; maritime traffic tracking; monitoring of fishing zones; geofencing for UAV navigation; GNSS for emergency location; etc.Co-chairs: Dr. Eugene Bang, ENAC, France and Dr. Qian Meng, Hong Kong Polytechnic University, China

GNSS Applications in SpaceSpace service volume; space-grade GNSS receivers for re-entering vehicles; improving spacecraft positioning using inter-satellite links; satellite laser ranging; innovative solutions for constel-lation build-up and maintenance; use of GNSS for orbit and attitude determination as well as precise orbit determination; moon navigation; and emerging space positioning applications. Advanced positioning techniques in space, such as snapshot based positioning on ground and in space, and interplanetary navigation.Co-chairs: David Chelmins, NASA and Dr. Lucilla Alfonsi, INGV, Italy

GNSS Augmentation Systems and Integrity This session deals with the development of integrity concepts and algorithms for multi-constellation GNSS users with interoperability. Multi-GNSS and GNSS augmentation system integrity designs, testing, and results. Applications include automated navigation for aviation, automotive, rail, maritime and other transportation applications. Definition of GNSS faults (satellite and constellation failure modes), external threats (spoofing), and the detection of various anomalies are critical to the safe and effective use of GNSS. Monitoring, fault exclusion, and protection level algorithms and requirements for RAIM, ARAIM, and the simultaneous of multi-GNSS signals. Dissemination of integrity support information via high and low-capacity data channels. Status and evolution of existing GBAS and SBAS (WAAS, MSAS, EGNOS, GAGAN, SDCM, AGNOS, KASS).Co-chairs: Jim Waid, Honeywell and Dr. Santiago Perea Diaz, Airbus, Germany

Spectrum: Protection and OptimizationThe protection of GNSS RF (RNSS) spectral bands through national and international policy and regulations. Effects of interference on the GNSS RF bands and risks to raising the noise floor. Effect of interference on safety critical applications. Interference detection, characterization, geolocation, and mitigation techniques. Effects of interference on GNSS receivers, acquisi-tion and tracking performance, and navigation integrity performance. Civilian anti-jam and anti-spoof technology, spoof rejection. Optimization of spectrum usage for future navigation solutions. The use of new frequency bands for navigation.Co-chairs: Dr. Fabio Dovis, Politechnico di Torino, Italy and Connor Brashar, Sandia National Laboratories

Trends in Future Satellite Navigation Technology, System Design and DevelopmentThe direction in new civil, military and governmental user capabilities and performance, includ-ing availability and accuracy improvement concepts. Future GNSS services, autonomous naviga-tion concepts without dependence on external signals including open and authorized services, search and rescue services, commercial services; optimization of GNSS signal structure, codes and data message; concepts for interoperability of GNSS constellations; concept of flexibility in future signals and service portfolios for global constellations; improvement and analysis of sys-tem performance; optimization and integration of future satellite navigation with other signals of opportunity; complementarity and competition with ground based solutions.Co-chairs: Dr. Takeyasu Sakai, Electronic Navigation Research Institute, Japan and Dr. Dinesh Manandhar, University of Tokyo, Japan

Panel: Status of GPS, Galileo, BDS, QZSS, GLONASS, and NavlCAn update on satellite-based navigation systems in operation or under development. A representative for each system will provide a system overview, summarize current or planned characteristics and performance, report recent programmatic events, update schedule and plans, and summarize ongoing interactions with other service providers. Questions from the audience are encouraged.Moderators: Dr. John Betz, The MITRE Corporation and Deborah Lawrence, Federal Aviation Administration

Track C: Mass Market and Commercial Applications Track Chair: Dr. Alexander Mitelman, AMM Technical Consulting

GNSS Receiver Manufacturer ShowcaseThe navigation community is eager to understand the current state of GNSS receiver technol-ogy, capabilities under development, and potential new applications. The use of signals of opportunity (cellular, DTV, Bluetooth Low Energy [BLE] beacons, etc.) and newly viable algorithms made possible by improved hardware (reliable carrier-phase measurements, etc.) Manufacturers are invited to showcase any aspect of their solutions. Presentations may be given directly by companies and/or a development partner.Co-chairs: Dr. Stewart Cobb, Satelles and Dr. Michael Koenig, L3 Technologies

Machine Learning in LocationThe ubiquity of location-enabled mobile devices provides rich and densely sampled streams of location data. These datasets are increasingly being used as training inputs to machine learning (ML) techniques for positioning and navigation. Such large and varied data flows naturally and present numerous challenges, including feature identification in varying atmospheric conditions; variations across time of day and seasons; and reliable weighting and exclusion of noisy or biased inputs. This session explores the various ways that ML can be usefully applied to location-based services and examines the challenges associated with using ML techniques for navigation.Co-chairs: Peter Colijn, Waymo and Dr. Lionel Garin, Deepmap.ai

Navigation in Urban EnvironmentsNavigation in urban environments poses many challenges. Techniques have been developed that address these challenges, many of which involve aspects of machine learning and/or autonomy to achieve accurate and reliable navigation. Today, urban navigation largely involves ground-based applications, but extension to the vertical dimension (for example with airborne delivery of goods, traffic monitoring, etc.) will become increasingly important as population density grows in urban centers.Co-chairs: Dr. David Herlihy, Waymo and James Tidd, Waysure

Novel Applications of GNSS Measurements from SmartphonesMobile phone manufacturers have begun to make available raw GNSS measurements, opening the door for improved positioning. With new techniques being developed to process these measurements, new and innovative applications are being realized. Emerging trends include the use of the dual frequencies and multi constellation signals, and the integration of smartphones into unmanned air vehicles.Co-chairs: Martin Reidevall, Skyresponse, Sweden and Dr. Ken Pesyna, Apple

The Spectrum of Autonomy in NavigationThe intersection of autonomous navigation systems and human operators presents a formidable technical challenge. The transition to motorways full of completely autonomous vehicles requires not only technical innovation but also an accurate understanding of human factors such as reaction time and situational awareness. Presentations in this session will examine the current state of the art in autonomous systems within the context of these challenges, along with promising directions for technical innovation and relevant regulatory considerations.Co-chairs: Dr. Sarah Houts, Ford AV LLC and Dr. Gary Fay, Rivian Automotive

Panel: UAV Package DeliveryRepresentatives from commercial entities, regulatory bodies, and UAV manufacturers will discuss the technical, logistical, and legal considerations of automated package delivery on a broad scale. Panelists will discuss the practical challenges of safe UAV operation in urban areas; allocation of airspace and coexistence with other aircraft; capacity planning and scaling considerations; and potential regulatory challenges, including liability for delayed or dam-aged goods. Moderators: Karen Van Dyke, U.S. DOT/OST-R

Track D: Multisensor and Autonomous NavigationLeading-edge research on multisensor and autonomous solutions to demanding navigation and positioning challenges that GNSS cannot meet on its own.Track Chair: Dr. Jason Gross, West Virginia University

Alternative Technologies for GNSS-Denied EnvironmentsAlgorithms and methods for applications with LiDAR, optical sensors, IMUs, signals of oppor-tunity, and other low cost sensors. Accuracy and integrity performance analysis. Calibration techniques, including for cooperative/collaborative or network connected systems. Partial and redundant IMUs for enhanced navigation, guidance or control algorithms. Direct geore-ferencing, precision agriculture, guidance and control of vehicles, deformation monitoring, directional drilling, indoor positioning for first responders, pedestrian navigation systems, rapid mobile mapping, crowd sourced mapping, and other novel applications.Co-chairs: Dr. Christian Gentner, German Aerospace Center (DLR), Germany and Dr. Allison Kealy, RMIT, Australia

GNSS Augmentation and Robustness for Autonomous NavigationAugmentation of GNSS positioning in aviation, maritime, rail, automotive and other transpor-tation applications (stand alone or with additional ground infrastructure). Applications of augmentation systems to support autonomous navigation. Robustness of augmentation sys-tems to signal degradation (ionospheric scintillation, multipath, spoofing, etc.). Fault mode definition. Monitoring and exclusion techniques. Integrity analysis for multi constellation GNSS. Evaluation of continuity and availability. Dissemination of integrity support informa-tion via high and low capacity data channels from SBAS, GBAS, ABAS, PPP and other systems.Co-chairs: Dr. Mathieu Joerger, Virginia Tech and Dr. Junesol Song, ENAC, France

Navigation Using Environmental FeaturesNew navigation techniques using natural and man-made features of the surrounding envi-ronment. This includes visual features, terrain height, magnetic and gravitational fields, stars, microclimate, acoustic features, odors and particulates. Environmental features may be used for position fixing, dead reckoning, or both. Papers will focus on new feature classes, new sensors, and/or new algorithms. Possible topics include new signal processing techniques for environmental features; feature classification and recognition; cooperative data distribution and mapping; managing ambiguity; new positioning algorithms using proximity, pattern matching, ranging, and/or angular positioning; and navigation using multiple classes of environmental features.Co-chairs: Dr. Joseph Curro, Air Force Institute of Technology and Dr. Andrey Soloviev, QuNav

Smartphone and Wearable Multisensor NavigationNew approaches to sensor integration for both pedestrian and vehicle navigation to meet demanding accuracy and reliability requirements in challenging environments. Integration of advanced multisensor systems; wearable multisensor devices; wearable vision and multisen-sor systems integration; modular and plug and play architectures to facilitate easy integration of new navigation technologies for smart devices; environmental and behavioral context aided navigation systems, including multisensor system location on the platform (person/vehicle); multimodal positioning; new approaches to state estimation for efficient handling of ambiguous, redundant and non-linear measurements; and high-integrity multisensor systems.Co-chairs: Dr. Ramsey Faragher, Focal Point Positioning, UK and Dr. Christina Selle, Apple

Urban and Indoor Positioning, Navigation and MappingMultisensor integration with new types of positioning signal and/or new positioning techniques. Simultaneous localization and mapping (SLAM) with multi-spectral sensors, inte-grated cooperative positioning, opportunistic navigational updates, or multisensor navigation and positioning enhancement with cognitive radio, new types of radio signature, near-field positioning, reconfigurable receivers, heterogeneous radio positioning, advanced proximity, new pattern-matching methods, non-line-of-sight (NLOS) ranging, and crowd-sourcing of signal map database.Co-chairs: Dr. David Bevly, Auburn University and Ryan Watson, West Virginia University

Panel: On the Road to Automated VehiclesWhy do we still have to drive ourselves? How will automated navigation enter our personal lives in the future? What are the remaining challenges that hold back self-driving vehicles from the mass market? How fast will this technology be accepted by different societies? What are the legal and ethical challenges? Can we really ever rely on artificial intelligence in critical situations? Seek answers to these questions and ask more in this panel on automated personal transportation.Moderators: Dr. Dorota Grejner-Brzezinska, The Ohio State University and Dr. Tyler Reid, Xona Space Systems

Track E: Algorithms and MethodsInnovative state of the art algorithms and methods that preserve and improve GNSS PNT performance, now and into the next era of multi-GNSS multi-frequency PNT capabilities.Track Chair: Dr. Christian Tiberius, Delft University of Technology, The Netherlands

Advanced Processing of Radio Signals-of-Opportunity for Navigation and TimingDevelopments that improve the use of Signals-of-Opportunity (SoO) for navigation and timing purpose. Fusion of new generation communication system signals with GNSS. Alternative location methods using SoO based on received signal strength estimation, TOA, TDOA or advanced RF propagation models, signal processing techniques to improve receiver synchronization to terrestrial signals, hybrid positioning techniques, and fine synchronization of terrestrial networks. The signals of interest include WiFi, 4G, 5G, RFID, Bluetooth, NFC, HD Radio/DAB, Digital TV etc.Co-chairs: Dr. Emanuela Falletti, LINKS Foundation, Italy and Dr. Francesca Zanier, ESA, The Netherlands

Advanced Technologies in High Precision GNSS PositioningNew algorithms and methods in support of high precision and reliable GNSS positioning for any kind of application, including those using low-cost receivers. Cycle slip detection, ambiguity resolution, integrity, performance evaluation of positioning and navigation systems, advanced network RTK functions. Algorithms and methods for improving the performance of multi-GNSS PPP techniques, PPP with integer ambiguity resolution, functional models and novel numerical approaches, performance and challenges of PPP-RTK. Attitude determination using multiple antennas, carrier phase multipath mitigation, algorithms for precise positioning in urban environment. Large network processing by high-performance computing, high-precision cooperative and networked positioning.Co-chairs: Dr. Safoora Zaminpardaz, RMIT University, Australia and Dr. Jihye Park, Oregon State University

GNSS Receiver Signal Processing for Degraded Signal ConditionsDevelopments and technologies that improve the performance and efficiency of GNSS receivers under degraded signal conditions such as caused by scintillation, solar storms, high dynamic condi-tions, near-far effects from pseudolites, GNSS signal anomalies and other effects including interfer-ence and spoofing. Topics of interest include algorithms, software, receiver designs, and potential signal improvements for both current and future GNSS signals, with an emphasis on robustness, multi-frequency capability, multi-GNSS capability, and sensor aiding. New designs and methods for GNSS signal monitoring applications. Processing and analysis of measurements from low-cost GNSS receiver chipsets and smartphones, for high-precision applications. Experimental tests in real environments, as well as models of disturbance effects on GNSS measurements are of interest.Co-chairs: Dr. Heidi Kuusniemi, University of Vaasa & Finnish Geospatial Research Institute, Finland and Dr. Pai Wang, University of Colorado Boulder

GNSS Receiver Technologies & Processing for Challenging EnvironmentsDevelopments that improve the performance and efficiency of GNSS receiver technology for typical suburban, urban and indoor reception conditions (strong multipath, NLOS, low received signal power, etc.). New and improved methods and algorithms for acquisition, tracking and data de-modulation (high-sensitivity, robustness to multipath, robustness to NLOS, use of assistance, robust carrier phase tracking) adapted to current or new signals, multi-constellation receiver algorithms, multi-frequency algorithms, and multi-antenna processing. Direct position estimation, meta-signal and multi-carrier signal processing. Machine learning and neural network approaches to GNSS signal and data processing. Experimental tests in real environments, as well as new models of the effect of the environment on the GNSS measurements are of interest. Targeted applications can be related to pedestrian, road, rail, harbor and inland waters navigation, and aerial (UAV) users.Co-chairs: Dr. Thomas Pany, Bundeswehr University Munich, Germany and Dr. Rong Yang, Shanghai Jiaotong University, China

Next Generation GNSS PositioningAlgorithms and methods developed around the use of multiple satellite constellations in LEO, MEO and GEO; and multi-frequencies that showcase the expected performance and capabilities of GNSS in the future. Multi-constellation and multi-frequency implementations and studies, use of LEO satellite mega-constellations, methods of exploiting multiple GNSS signals for positioning, multipath mitigation techniques, estimation techniques, integrity enhancements from multi-GNSS, and multi-constellation and/or other sensors.Co-Chairs: Dr. Mingquan Lu, Tsinghua University, China and Dr. Christoph Guenther, German Aerospace Center (DLR), Germany

Panel: Redoing Global Satellite Navigation Systems from Scratch - The Perfect SystemIf we had to do it all over again – what would the perfect global satellite navigation system look like? Assume you could design the system with no need for backward-compatibility to existing technology, but rather only to satisfy the needs and expectations of the future. The laws of physics are the primary limit and you could make use of all knowledge in the field of navigation accumu-lated so far. Listen to the visionary ideas of our panelists and join in for a controversial discussion.Moderators: Dr. Chris Hegarty, The MITRE Corporation and Marco Falcone, ESA, The Netherlands

Track F: Advanced GNSS TechnologiesThe latest GNSS technologies and innovations emerging from scientific and industrial research and their future application. Track Chair: Dr. Xiaochun Lu, NTSC, CAS, China

Atmospheric Effects on GNSSTropospheric and ionospheric modeling, measurements, and algorithms to compensate for atmospheric errors. Novel methods for data collection, processing and analysis. Characterization of propagation environments. Ionospheric scintillation studies and impacts on GNSS services and applications. Space weather and terrestrial weather applications. New ground-based and space-based GNSS networks and experiments.Co-chairs: Dr. Manuel Hernández-Pajares, Universitat Politècnica de Catalunya (UPC), Spain and Dr. Attila Komjathy, JPL

GNSS Authentication and Anti-SpoofingGNSS signal authentication, including approaches such as signal design, receiver based anti-spoofing techniques, and use of external infrastructure. Possible topics include detection, characterization, localization and mitigation of repeaters and spoofers, and methods for authenticating map and data base information. Proof-of-location schemes. Time certification technology and applications. Early simulations or implementations of Chimera and other emerging authentication specifications.Co-chairs: Ranwa Haddad, The Aerospace Corporation and Dr. Sanjeev Gunawardena, AFIT

GNSS Receiver and Antenna TechnologiesDevelopments that improve the performance and efficiency of GNSS receiver technology. Wide-band GNSS antennas, high-sensitivity/high-dynamic range RF front ends, robustness to multipath and interference, use of assistance data, multi-constellation receiver algorithms, innovative and efficient software for GNSS receivers and new/existing applications, experimental tests in real environments, software-defined GNSS receivers and associated processing methods, novel GNSS front-end technologies, open source projects, and the use of software radio standards and tools.Co-chairs: Dr. Zheng Yao, Tsinghua University, China and Diana Fontanella, Airbus Defense and Space GmbH, Germany

GNSS Vulnerabilities and Anti-jammingAlgorithms and techniques for improving the resilience of GNSS PNT. This includes signal anomaly detection algorithms and metrics, GNSS threat modeling as well as intentional and unintentional sources of signal interference and spectrum issues. Possible topics include detection, characterization, localization and mitigation of interference sources, jamming, scintillation, solar storms, impact analysis, trials and test results across a range of application domains, such as civil aviation or autonomous car guidance applications. Co-chairs: Steffen Thoelert, German Aerospace Center (DLR), Germany and Dr. Daniele Borio, European Commission, Joint Research Centre (JRC), Italy

Remote Sensing; Space Applications; Timing and Scientific ApplicationsGNSS Earth observation techniques; radio occultation measurements of the troposphere and ionosphere; reflectometry for environmental remote sensing of land, ocean and ice; and detection of natural hazards such as earthquakes, tsunamis, and volcanic eruptions. Search and rescue application based on GNSS search and rescue payload. Technical advances of both COTS and specialized systems for space applications; topics in constellation navigation and attitude determination; GNSS metrology and its applications; advances in precision timing; multi-GNSS for timing applications; GNSS data assimilation methods for scientific investigations of the atmosphere; and modeling the effects of wave propagation.Co-chairs: Dr. Javier Tegedor, Fugro, Norway and Dr. Sunil Bisnath, York University, Canada

Panel: PNT for AI-Enabled Autonomous Systems – The Good, the Bad, and the UglyThe world is abuzz with artificial intelligence (AI), as it integrates into numerous application domains. In parallel, there are ambitious plans to fully integrate unmanned aerial vehicles (UAVs) into the national airspace and bring self-driving cars to our streets. Endowing these autonomous, safety-critical cyber-physical systems (CPS) with AI could bring numerous opportunities. But how about the new challenges that would arise and what about the unintended consequences? This panel will bring together aviation, transportation, and GNSS experts to discuss the opportunities and challenges of AI-enabled autonomous systems in safety-critical applications.Moderators: Dr. Guifei Jing, Beihang University, China and Dr. Zak Kassas, University of California, Irvine