Meta Model of Magnetic Field of Extended Technical Object in Prolate Coordinate System

The implementation of strict requirements for magnetic silence of elongated energy-saturated technical objects - such as naval vessel and submarines is largely determined by the adequacy of mathematical models to the signatures of a real magnetic field. Development of method for design of meta model of magnetic field of extended energy-saturated technical object based on magnetostatics geometric inverse problems solution and magnetic field spatial spheroidal harmonics calculated in prolate spheroidal coordinate system taking into account of technical objects magnetic characteristics uncertainties. Magnitudes of spatial extended spheroidal harmonics of meta model of magnetic field calculated as magnetostatics geometric inverse problems solution in the form of nonlinear minimax optimization problem based on near field measurements for prediction far extended technical objects magnetic field magnitude. Nonlinear objective function calculated by COMSOL Multiphysics ® software package used. Nonlinear minimax optimization problems solutions calculated based on particle swarm optimization algorithms. Results of prediction far magnetic field magnitude of extended technical objects based on designed meta model of the magnetic field in the form of spatial prolate spheroidal harmonics in prolate spheroidal coordinate system using near field measurements with consideration of extended technical objects magnetic characteristics uncertainty are given.