Research And Design Of Wireless Location Based On Hadoop

In recent years,with the development of science and technology,wireless communication technology has become very mature,in every corner of people's lives can find its traces.Due to the growing of the users demand for location-based services which include bluetooth,laser,infrared,LED,ultrasonic,GPS and wireless positioning technology to flourish.Compared with Bluetooth,laser,infrared,LED,ultrasonic,GPS,wireless location technology is cheap,wide coverage and high resource utilization and don't need to add additional equipment.As the number of locally deployed wireless APs continues to increase,the amount of data that APs receive continues to increase.The use of traditional computing methods to calculate takes a long time,and resulting in positioning results are not timely and accurate.Firstly,this paper introduces various positioning systems,and points out the advantages of wireless positioning system in terms of accuracy and equipment cost.Secondly,it introduces the advantages of triangular centroid method while introducing other wireless positioning algorithms.It is pointed out that when the triangular centroid method is localized,the signal from the terminal can not be measured due to the obstacle or the equipment itself.Then,the algorithm is improved:the polygon region is constructed and the centroid approximation of the polygon is regarded as the positioning point.Using the Hadoop platform to optimize the data obtained,filter out the signal within the test range and handle the signal with distance AP less than 1m.The optimization can ensure the accuracy of positioning under the premise of greatly speed up the calculation.Finally,the Hadoop platform and Mapreduce are designed,and the AP is deployed according to the coverage of the wireless AP and the SNR attenuation model.The location calculation and verification are carried out.In this paper,the use of Hadoop to quickly calculate the advantages of large data,the improved hybrid positioning algorithm with Hadoop combination,the relevant research is very meaningful.In this paper,the hybrid positioning algorithm is combined with Hadoop technology,and Hadoop is used to optimize the acquisition data.Finally,it is proved that the algorithm based on Hadoop hybrid positioning algorithm can quickly and accurately calculate the location of the location,through the Hadoop distributed computing.