Learn about real-time magnetic navigation systems in this conference talk that explores the development of MagNav.jl, a Julia-based toolset for airborne magnetic navigation. Discover how the system compensates for aircraft magnetic interference to enable accurate magnetometer readings compared against Earth's magnetic field maps. Explore the implementation of state-of-the-art Tolles-Lawson and machine learning aeromagnetic compensation models for real-time applications, and examine their navigation performance against standard offline models. Understand how Julia's capabilities in automatic differentiation, neural network construction, and performance optimization make it an ideal platform for magnetic navigation research. Follow along as the speakers demonstrate practical applications of online aeromagnetic compensation and discuss its importance for real-world implementation in navigation systems.