A Faster Magnetic Contour Matching Algorithm

A new magnetic contour matching (MAGCOM) algorithm is proposed, which reduces computation by searching the solutions in δ-neighborhood of measurement. This algorithm can be used in geomagnetism aided navigation to improve real-time practicability even there are large errors. Effect of the algorithm is evaluated by simulation. The results show that this algorithm has advantage in time-cost, and doesn’t lead to matching probability and position error worse observably. Keywordsmagnetic contour matching; δ-neighborhood; geomagnetism aided navigation; real-time practicability; timecost