Review of Geomagnetic Indoor Positioning

With the development of science and technology, life is becoming more and more convenient. Satellite outdoor positioning has reached a very stable and precise level. However, due to the obstruction of the building, the satellite signal is weak in the indoor environment, this technology cannot be used to achieve high-precision indoor positioning. Therefore, new technical means are needed to solve the “last mile” problem in navigation and positioning services. This paper introduces the advantages, the principles and common algorithms of geomagnetic indoor positioning, and discusses the development trends and existing problems of geomagnetic indoor positioning technology. Geomagnetic indoor positioning has low cost and high accuracy, and has good development prospects.