Improvement of DV-HOP localization algorithm

The positioning technology is one of the most important technologies in the wireless sensor network. The paper describes the current international positioning on several existing technologies, including the based ranging RSSI, TOA, TDOA, etc. and non-centroid algorithm based on distance, Amorphous algorithm, APIT algorithm and so on. Dv_Hop algorithm is a distributed localization algorithm based on hop count information. It costs lower hardware and is simple. It due to a large jump distance error, This paper studies the DV-Hop algorithm theory and improves by ranging from the technical aspects. Carried out simulation of the algorithm by MATLAB, reduces the positioning error.