Indoor Positioning Technology Research Based On WiFi

In recent years,outdoor positioning technology has developed rapidly and steadily.In comparison,the breakthrough method or technology in the field of indoor positioning is still relatively scarce.Because of the diversity of indoor environment and the obstacle of signal transmission,indoor positioning is faced with more problems.The indoor positioning technology has become a research hotspot and difficulty in the present.With the continuous development of WiFi technology and the extensive coverage of WiFi network in China,the indoor positioning service based on WiFi has attracted widespread concern.The indoor positioning technology based on WiFi is very practical and has low deployment cost,so it has a larger market space.Indoor positioning technology based on WiFi has wide range of application in a variety of complex environment,such as library,gym,underground garage,warehouse etc.,to achieve rapid positioning of personnel and items.Due to the GPS satellite positioning technology to achieve a good indoor positioning,coverage increasing WiFi signal is used to improve the indoor positioning accuracy and reduce the deployment cost,which has important research significance and the practical application value.In this thesis,the theoretical basic research of indoor positioning system based on WiFi and SVM algorithm is discussed systematically,and we provide an indoor positioning algorithm with high reliability and high positioning accuracy.The algorithm can obtain stable and reliable positioning by collecting AP node signal and processing signal,which solves the problem of insufficient indoor positioning accuracy in complex environment.Finally,it provides a new way for indoor positioning system based on WiFi to expand the current research methods.Through the study of indoor positioning algorithm,the relevant theories andtechnical system are perfected,which provides theoretical and technical support for the construction of wireless positioning system in complex environment.It also provides some theoretical and technical solutions for the positioning of equipment,the effective use of indoor location information and indoor navigation.