For the purpose of tracking the moving target in 3 D directional sensor network and monitoring the target effectively

a dynamic target tracking self-deployment algorithm（ DTSA） for 3 D directional sensor network is presented. DTSA is based on node sensing model and virtual force model. By using the Sigmoid function

the optimal moving rate model is built in tracking process

so that the target can be monitored by sensor nodes with the optimal moving strategies even if the target is moving constantly. Simulation results show that compared with the traditional self-deployment algorithm for dynamic target tracking

DTSA has a significant improvement in tracking coverage rate and average moving distance and the performance of DTSA is better than the traditional algorithm.