Institute of Navigation

Institute of Navigation The world's premier professional society advancing positioning, navigation, and timing (PNT).

JNC 2026 is in the books.Four days, all of it focused on advancing positioning, navigation, and timing for those who ser...
06/05/2026

JNC 2026 is in the books.

Four days, all of it focused on advancing positioning, navigation, and timing for those who serve.

A big thank you to the ION Military Division leadership, speakers and session chairs. They guide this conference and give their time to keep the PNT community moving forward.

Grateful for everyone who made the trip. See you next year.

06/02/2026

The exhibit hall is open and the week is off to a strong start.

Military leaders, government agencies, industry professionals, and researchers coming together to discuss the latest developments in positioning, navigation, and timing (PNT).

Welcome to JNC 2026.

JNC 2026 is officially underway!Attendees are arriving, badges are being picked up, and the excitement is building as we...
06/02/2026

JNC 2026 is officially underway!

Attendees are arriving, badges are being picked up, and the excitement is building as we kick off four days dedicated to the future of Positioning, Navigation, and Timing (PNT).

This week, military, government, industry, and academic professionals from across the country will come together to explore this year’s theme:

Robust, Resilient, Assured PNT for Warfighters and Homeland Security.

Whether you’re attending technical sessions, visiting the exhibit hall, reconnecting with colleagues, or making new connections, we’re excited to have you here.

Welcome to JNC 2026—we can’t wait to see what this week brings!

The navigation community continues to move our industry forward through innovation, leadership, research, and service.No...
05/28/2026

The navigation community continues to move our industry forward through innovation, leadership, research, and service.

Now is the time to recognize the individuals making sustained and significant contributions to satellite navigation.

Nominations for the Johannes Kepler Award are due June 30.

If someone in our community has advanced the field, mentored others, led groundbreaking work, or helped shape the future of navigation, consider submitting a nomination.

Recognize greatness. Nominate today.

Reliable vehicle localization in global navigation satellite system (GNSS)-denied urban environments remains challenging...
05/27/2026

Reliable vehicle localization in global navigation satellite system (GNSS)-denied urban environments remains challenging owing to inertial drift during extended outages. This paper introduces waypoint-informed localization (WiL), a framework that leverages digital map information and onboard sensors to maintain navigational accuracy. The system employs the onboard diagnostic II (OBD-II) velocity integration framework (OVIF), which combines OBD-II vehicle speed with estimates from a semantic-aware stereo vision-based navigation system. During GNSS outages, WiL derives position and azimuth pseudomeasurements by integrating a vehicle kinematic model with two-dimensional road geometries, specifically road centerlines and edges. These estimates serve as aiding measurements for an extended Kalman filter, thereby bounding errors of a three-dimensional reduced inertial sensor system. Experimental validation demonstrates that the WiL-OVIF system achieves a 74.6% reduction in distance-traveled error compared with baseline methods, maintaining a localization error of 0.128% over a 2.8-km GNSS outage.

Read the full paper, "Waypoint-Informed Localization (WiL): A Novel Integration of 2D Maps and Onboard Sensors for Robust GNSS-Denied Navigation," on our open access website: https://navi.ion.org/content/73/1/navi.767

How do you detect a faulty atomic clock on a navigation satellite, without relying on a ground station?For lunar mission...
05/11/2026

How do you detect a faulty atomic clock on a navigation satellite, without relying on a ground station?

For lunar missions, this isn't a hypothetical. Ground monitoring networks won't be widely available for early lunar missions, and traditional receiver-based methods (RAIM) need 5–6 satellites in view at once, which is hard to guarantee with smaller lunar constellations.

In a new NAVIGATION paper, Keidai Iiyama, Daniel Neamati, and Prof. Grace Gao (Stanford Aeronautics & Astronautics) propose a different approach: let the satellites monitor each other.

Their method models the constellation as a weighted graph, with inter-satellite range measurements as the edges. When a satellite's clock jumps, it injects a bias into those ranges, and the graph literally stops being realizable in 3D space. By monitoring the singular values of geometric centered Euclidean Distance Matrices across 5-satellite subgraphs, faults reveal themselves as geometric inconsistencies.

In the authors' words: "Our method is not intended to replace decades of research in existing fault detection methods. Rather, our method provides new theoretical and practical insights to view the fault detection problem from a different perspective."

The paper validates the approach on both a GPS constellation and a notional lunar constellation, work that becomes increasingly relevant as NASA's LunaNet architecture takes shape.

Read the full open-access article in

NAVIGATION: https://lnkd.in/euxa7ixJ

05/04/2026

In a galaxy far, far away... they really could've used GNSS. 🛰️ Han Solo made the Kessel Run in 12 parsecs — imagine what he could've done with PNT.

May the Fourth be with you! ✨

That's a wrap on the European Navigation Conference (ENC) in Vienna! Wonderful to see ION members come together at the b...
04/30/2026

That's a wrap on the European Navigation Conference (ENC) in Vienna!

Wonderful to see ION members come together at the booth this week — the kind of in-person connection that keeps our community strong.

Pictured: Ramsey Faragher, Charles Toth, Gary McGraw, Terry Moore, and Richard Fischer. Thanks to everyone who stopped by to say hello.

04/28/2026

🏆 Nominations are now open for the Johannes Kepler Award

Submissions due June 30, 2026. Link in bio to nominate.

The Kepler Award honors individuals for sustained and significant contributions to the development of satellite navigation. Winners are selected by a special nominating committee and the award is presented only when deemed appropriate.

Congratulations to our recipients from the past decade — and to all honorees since the award was established in 1991:

2025 — Logan Scott
2024 — Dr. John Raquet
2023 — Dr. Todd E. Humphreys
2022 — Dr. Boris Pervan
2021 — Dr. Mark Psiaki
2020 — Dr. Y. Jade Morton
2019 — Dr. Peter Teunissen
2018 — Dr. Oliver Montenbruck
2017 — Prof. Terry Moore
2016 — Dr. Grejner-Brzezińska

The demand for precise and reliable location data has driven interest in achieving high-accuracy global navigation satel...
04/23/2026

The demand for precise and reliable location data has driven interest in achieving high-accuracy global navigation satellite system (GNSS) positioning with smartphones. However, unaccounted-for code modeling errors, such as multipath, hinder successful carrier-phase ambiguity resolution, especially in dynamic urban environments. This study proposes a new integration method combining GNSS carrier-phase measurements with fused location provider (FLP) positions to mitigate these errors. We investigate the performance of FLP-aided positioning in (a) a single-epoch real-time kinematic (RTK) scenario in which the model parameters are assumed to be unlinked in time and (b) a multi-epoch RTK scenario in which only a subset of the parameters, i.e., the carrier-phase ambiguities, are assumed to be constant over time. The analysis is based on experimental data sets obtained via a Google Pixel 5 smartphone tracking dual-frequency multi-GNSS signals, including L1 + L5 Global Positioning System, E1 + E5a Galileo, and B1 BeiDou Navigation Satellite System code- and carrier-phase observations. Despite severe code multipath, the proposed integration achieves centimeter-level accuracy in over 96% of ambiguity-fixed positioning solutions.

Read the full paper, "FLP-Aided GNSS RTK Positioning: A Means of Supporting Smartphone High-Precision Positioning in Dynamic Urban Environments" on our open-access website: https://navi.ion.org/content/73/1/navi.730

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