The Research On The Range-based Location Technology And Its Application For WSN

At present, WSN (wireless sensor network) leading the contemporaryinformation technology trends in its low power consumption, low cost, distributed andself-organization characteristics and great research and application value. As we know,the collected data can be meaningful in combination with the measuring coordinatelocation information,Meanwhile, the location accuracy of traditional locationtechnology is low, so to explore the new method to improve the positioning precisionand forming a complete set of high robustness, high precision positioning technologyand practical scheme is an important technological problem in WSN.This paper researches the range-based location method.starting from themeasurement information of various effective factors and the actual distribution ofnetwork nodes is considered,analysis of the limitations of the location method basedon the information of various measurements and do experimental simulation, newrange-based location ideas methods and the exploration orientation will be researchedbased on the solid foundation.Proposed a high precision positioning method ofdistance measurement based on information fusion. The information fusion-basedlocation method using the RSSI、TOA and AOA measured by the anchor nodes. Themeasured information is corrected by the radial basis function neural network toreduce the influence of various errors on the positioning results. Simulation resultsshow that the proposed new location method improves the location performance andverify the correctness of the study.through the analysis of the existing location system and application scenarios,summarizes the design principles of location system and provides the reference forWSN. Furthermore, a range-based location system and a node used for mine personnellocation application, their workflow is described. The application system frameworkand module design are improved and provide practical reference for the application oflocation technique.