Intelligent geomagnetic matching method

Geomagnetism aided navigation technique is a new branch of integrated navigation system. It is raised to reduce the dependence of navigation system on GPS. Our attention is focused on magnetic matching method. Based on PSO, an intelligent matching method is proposed. Contour constraint is used as prior information about the real path to confine particles initialization, so as to make sure that at least one particle is around the real path. Under this constraint, efficiency and precision of the method will be greatly improved. In simulation experiments, both matching results and integrated navigation results showed good performance.