Source Localisation using Lloyd's Mirror Fringes on Narrowband Lines

摘要

The analysis of the Lloyd's mirror interference of multiple narrowband lines froma sound source obtained with a single sensor is considered. A straightforward global least squares optimisation is discussed. The analysis is based on a straight line trajectory model of the source motion, and is configured for any range independent propagating medium. Two methods are proposed, each being based on a discrete optimisation on a predefined parameter grid. These are a simulated annealing algorithm and a guided search method. The least squares cost function is defined in a manner independent of the intrinsic shape of each narrowband emission. Simulation data based on an ISO speed sound profile are used to explore the proposed analysis.