Underground Personnel Positioning Based on RSSI Difference Correction Algorithm

Wireless positioning system based on RSSI localization of the moving target undermine easy affected by multipath effect, shadow effect and so on, puts forward an improved RSSI wireless positioning difference correction algorithms. Through the known reference node coordinates to calculate revised, multiple sets of revised to the same treatment to correct the coordinates of measuring points, avoids the influence of a single reference node revised value is bigger. And by increasing the number of iterations to adjust the weight of single result to locate fixed. The simulation results show that the algorithm has the characteristics of the positioning error is small, high precision. Under the condition of without increasing the reference node, also can effectively improve the positioning accuracy.