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DV-Hop localization algorithm is a range free localization algorithm in WSN (Wireless Sensor Network). In recent years, the research on range-free localization algorithm is one of the hot issue in WSN. DV-Hop algorithm is a simple, convenient operation, high efficiency and low energy consumption. But the the localization accuracy is low. In this paper, we study the traditional DV-Hop localization algorithm and propose an improved DV-Hop localization algorithm. In order to make the result ofdoi:10.12720/jcm.10.9.728-733 fatcat:t7iytfhz2nhs3aclbz4fyy7ski