A Coverage-Enhancing Algorithm For The 3D Wireless Multimedia Sensor Networks

As an important means of communication in modern society,wireless multimedia sensor network plays an important role in people's daily life,providing the basis for sustainable economic development and inclusive growth.As one of the basic problems in wireless multimedia sensor networks,coverage concerns the quality of service directly,besides that,provides reliable assurance for the usage in the practice.Related technical research in two-dimensional coverage has been very mature and extensively.But the studies are rarely conducted in three-dimensional coverage.It is vital to design a reasonable coverage control algorithm based on the three-dimensional perception model.The perception model directly determines the coverage and monitoring capability of wireless multimedia sensor networks.This article proceeding from the traditional two-dimensional perception model and the existing three-dimensional perception model,proposes a new improved three-dimensional perception model based on the triangle,on this basis a coverage enhancement algorithm is presented in this paper.This algorithm calculates the best pitch angle of sense direction according to the location of each node and monitoring scenario,then applies artificial fish swarm algorithm to optimize deviation angle.Build on this,calculates redundant nodes,using the set covering model algorithm.Further the redundant nodes are moved to blind area using improved shuffled frog leaping algorithm.Experiments show that the proposed three-dimensional perception model based on the triangle is more in conformity with practical situation.Coverage enhancement algorithm can eliminate overlap and blind area effectively,has better effect on improving the network coverage percentage.