Aiming at error accumulation issue of traditional DV-Hop localization algorithm in calculating average hop distance and hops between anchor node and unknown node

present a DV-Hop localization algorithm based on RSSI ratio correction. In the improved algorithm

according to RSSI value of different average hop distance select the maximum and minimum average hop distance and communication radius R

then obtain scale factor. Use it to obtain weighting factor and to correct each hop-count

so as to obtain more accurate hops and average hop distance. The simulation suggests that positioning precision of the proposed algorithm is prior to traditional algorithm.