Two amelioration methods were presented in this paper optimized schemes for the choice of assistant nodes in the construction of the local coordinate system ( lcs ) and for the combination of lcss in the construction of network coordinate system ( ncs ) . it can effectively reduce the communication cost in the construction courses of lcs and ncs with no influence on the localization coverage 本文提出相應的改進方法局部坐標系構建過程中輔助節(jié)點對的優(yōu)化選擇方法和全局坐標系構建過程中局部坐標系的優(yōu)化合并策略,可在不影響原算法定位覆蓋率的前提下,有效降低它在構建本地局部坐標系和合并構建網絡全局坐標系這兩個主要過程中的通信開銷。