A LSSVR three-dimensional WSN nodes location algorithm based on RSSI

Nodes location is a key technology in the research of Wireless Sensor Network (WSN), in which the location method that is based on RSSI ranging and Least-Square is the current hot spot in research and application. Currently, with the tendency of more and more applications of WSN in the three-dimensional environment, the LSSVR three-dimensional WSN nodes location algorithm based on RSSI is proposed, aiming at the problem of the low accuracy of nodes location estimated by least square method in applying RSSI which is easily influenced by many factors and thus cause large ranging errors and difference. The paper will also present the obvious advantages of the LSSVR three-dimensional nodes location algorithm compared with Least-square location algorithm after the simulation and regression analysis of errors. The location errors acquired by the two kinds of location algorithms under the circumstance of small ranging error are similar. When the ranging error is over 16%, LSSVR three-dimensional nodes location algorithm can greatly improve positioning accuracy with an average reduction of 25% of positioning error, sometimes even to an utmost of 50%, compared with the traditional LS positioning algorithm.