Improved DV-Hop Positioning Algorithm Based on Angle Threshold

In order that the coordinate of some anchor nodes which join in positioning may be close to a line,the position capability of DV-Hop is lower.This paper puts forward a positioning algorithm based on angle threshold,which can set the angle threshold to filter out the anchor nodes and improve DV-Hop's positioning capability.Compared with DV-Hop,simulation shows that the improvement of ATDV-Hop on the proportion of enable-positioning nodes is 24.05% and the positioning precision is 8.79%.