HE Deng-ping, FAN Mao-lin. A mixed localization algorithm for wireless sensor networks based on APIT[J]. 2015, 34(2): 133-135. DOI: 10.13873/J.1000-9787(2015)02-0133-03.
To overcome the problems of the current APIT localization algorithm which has low localization precision under the intensive beacon nodes density environment and low localization coverage under sparse beacon nodes density environment
a mixed localization algorithm is proposed. By reducing error of triangle point test( PIT) and selecting superior triangles
the localization precision is promoted under the intensive beacon nodes density. Furthermore
combination of DV-Hop and two-point localization method can calculate advantage of coordinates of unknown nodes in sparse beacon nodes density and improve localization coverage rate. According to the simulation
this mixed algorithm has effectively improved localization precision in intensive beacon nodes density and localization coverage rate in sparse beacon nodes density.