In the paper

analyses the time and frequency domain characteristics of the target signal under the classical magnetic dipole model and points out the difficulty and particularity of the magnetic localization and parameter estimation problem.Designs the second-order difference matrix method (SDMM) and frequency domain matching method (FDMM) to solve the localization and parameter estimation problem.Both of the algorithms make use of the time and frequency domain characteristic of the signal and convert a high-order optimization problem into sequential solutions of several low-order problems.SDMM has low computation burden

excellent real-time performance.FDMM is more reliable in low SNR environment and suitable for post-analysis.Simulation of both methods meets well with the theoretical analysis and the algorithms achieve the goal.The paper also points out the further work for the two algorithms.