Model-based detection of a moving gaseous source in a 2D spatial domain using a sensor-based grid adaptation approach

The release of gases from land or aerial-based vehicles into an environment represents accidental or deliberate action. This work considers the dispersion of a plume from a moving source and proposes a model-based estimation scheme that provides the proximity of the source location by means of a guided mobile agent that carries a sensor. The method couples grid refinement with estimation and includes a kinematic model for the mobile agent. Using Lyapunov-based method, a stable guidance scheme is provided for the spatial relocation of the moving sensor. Computational results serve to demonstrate the effectiveness of the method for 2D spatial domains and realistic parameters for the source, mobile agent, and ambient conditions.