DV-hop算法实现精确定位，每句代码都有解释，方便大家的理解。将代码复制到Matlab中就能运行，已经实践过，大家尽管放心。-DV-hop algorithm to achieve precise positioning, the code has to explain each sentence, to facilitate understanding. Copy the code into Matlab will be able to run, it has been practiced, you may rest assured.