Design And Realization Of Wireless Detection And Locationsystem Based On WiFi Technology

Nowadays, in the era of Internet, the use of wireless network communication technology is widespread and increasingly frequent. Different from the wire network that used in the fixed place, wireless network gives users convenient information exchange services, while the information security of wireless network has become a hot issue of research. How to control the risk of losing, tampering and stealing information, to avoid the illegal invasion and malicious attack, become the research priorities of wireless network information security.This thesis describes the development and research status of wireless network communication technology, and related technology, methods and performance. Different from the wire network which protected by the physical layer, the wireless network has the features of openness, mobility and instability, which lead to the problems of illegal invasion, malicious attack and the lost or change of information. Based on the analysis of these problems, the thesis analyzes the wireless detection technology and wireless location technology which is used to solve these problems.Based on the problems of wireless network information that mentioned above, this thesis designs the wireless detection and location system that based on Wi Fi technology. The thesis shows the framework design, the overall process design, the implementation of each module and the error handling of the system in detail. It also describes the complete test cases and data of the system and analyzes the performance of the designed system.The wireless detection and location system based on Wi Fi technology that this thesis designed combines the wireless detection technology and the wireless location technology. It can realize the protection of indoor device and terminal which linked to wireless network. The system can obtain the information of network, AP, client and channel completely and correctly which based on the test results, and realize the real-time monitoring of the wireless network. The system can locate the suspicious object from unknown source. It uses the location method that without reference label with a relatively high accuracy. It dynamically obtains the environment parameters which used in the location algorithm to improve the location accuracy. The test results show that the location accuracy controlled within 1.01 meter. All the function and properties have achieve the expect designed purpose. From the daily monitoring to the location and tracking of the invasion from device or terminal, combined with the risk processing technology, the system will realize the protection and defense of wireless network information security.