关键词: 多障碍, 有向异构传感器网络, 虚拟势场, 边界节点, 障碍物节点, 覆盖优化

Abstract: For the problem of coverage in heterogeneous sensor networks with multiple obstacles, this paper introduces a virtual potential field based coverage algorithm of multi-obstacle for directional heterogeneous networks （PCMODH） on the basis of the directional sensing model. Through involving the concepts of overlapping centroid, effective centroid and virtual boundary centroid, this algorithm makes optimizations of perform virtual force, node movements, boundary node and obstacle node in directional heterogeneous networks with multiple obstacles. The algorithm optimizes the coverage problem in random deployment, and increases coverage in heterogeneous sensor networks with multiple obstacles. Simulation results show the effectiveness of the proposed algorithm.

Key words: multi-obstacle, directional heterogeneous sensor networks, virtual potential field, boundary node, obstacle node, coverage optimization