Final Presentation EL1-088 ter: “Proof-of-concept of advanced navigation algorithms based on factor graph optimization”

Last Updated: 14/04/2026 06:34     Created at: 14/04/2026 06:32

On 08 April 2026, Jaguar Land Rover (JLR), presented the results of NAVISPEL1-088, which focused on Factor Graph Optimisation in the PNT domain.

JLR developed the Factor Graph Optimisation Navigation Unit (FGO-Nav), a next generation proof-of-concept platform advancing the state of the art in multi-sensor navigation.

The system demonstrated how Factor Graph Optimisation (FGO) can outperform traditional Kalman filter-based approaches, particularly in degraded GNSS environments such as urban canyons, tunnels, and areas of intermittent satellite visibility.

The FGO-Nav platform features a fully modular architecture supporting GNSS-only, GNSS/INS, Real Time Kinematic (RTK), and Precise Point Positioning (PPP) modes, and comprehensive Key Performance Indicators enabling the evaluation of performance.

Across more than 24 hours of real world multi environment testing, the FGO-Nav platform demonstrated high accuracy and availability, meeting all ESA’s requirements. Tightly Coupled FGO consistently delivered improved estimation accuracy compared to Loosely Coupled FGO, Extended Kalman Filtering, and commercial GNSS receivers, especially in GNSS challenged scenarios.

The activity was fully funded by ESA NAVISP Element 1, whose objective is to innovate PNT technologies. The slides can be accessed here.