Research On RFID Localization Algorithm

Under the improvement of public services and people's living standards,there is more urgent to adapt to the new situation for positioning technology,so many scholars and research institutions are interested in the location technology after GPS which was widely used for global positioning.RFID location technology will be the main positioning technology in the future.Especially in resent years,the positioning technology of RFID is more rapid speed to develop,and it is widely used in industrial production and all aspects of life.Under the variety of needs of people,we should develop a kind of location algorithm for RFID which has better robuster,more stable for the system,small errors,lower cost for deployment,more capable to correct and better anti-jamming capability what will be new direction.First of all, the method of stepwise refinement is used with the detection tags and reference tags which is used to assist positioning based on the analysis of reader network,so the improved algorithm improves position accuracy and has the feature of state detection for tags.Secondly,readers and reference tags are relocated and virtual tags are used and the reading area of reader is divided for six area.so the improved algorithm improve the positioning accuracy.Finally,the layer by layer exclusion position algorithm is proposed and improved with dual parallel reading and filter by the order first inner group last outer group.so it reduces the time of reading and improve the efficiency of the algorithm.The article has a summary for work at last and point out the problem to be solved in the study,and it has a prospect of the development trend of RFID location technology.