Thompson, Peter; Groves, Paul D; Handley, Rob; Griffths, Owen; Selviah, David; (2024) Dismounted Soldier Positioning in GNSS-Denied Environments Using Magnetic Fields. Presented at: Operating in the Future Electromagnetic Environment Symposium 2024 (OFEME), Glasgow, UK.

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Abstract

Situational awareness provided by robust and resilient positioning systems is mission-critical for many military applications and emergency services. Global Navigation Satellite Systems (GNSS) receivers are ubiquitous. However, GNSS signals can be denied, degraded or otherwise unavailable in many operational environments, necessitating one or more additional positioning navigation and timing (PNT) technologies to be available to the user. No single PNT technology, including GNSS, is sufficient in all operational environments. Therefore, a multisensor integrated system using a system of subsystems is required. This PhD project focuses on dismounted soldier positioning based on subsystems derived from inertial and magnetic measurement units (IMMU). Inertial navigation is well-researched for pedestrians; however, map matching derived positioning using magnetometers is under-researched, particularly the effect of different environments on performance. This magnetic-derived subsystem does not require new sensors but complements the commonly used IMMU system.

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