定位机制研究(Localization Based on physical measurements,localization algorithms solve the problem that how the location information f from beacon nodes spreads network-wide. Generally,the design of localization algorithms largely depends on a wide range of factors,including resource availability,accuracy requirements,and deployment restrictions.定位机制研究（Localization） • Based on physical measurements, localization algorithms solve the problem that how the location information from beacon nodes spreads network-wide. • Generally, the design of localization algorithms largely depends on a wide range of factors, including resource availability, accuracy requirements, and deployment restrictions