Research On The Three-dimensional Targets Deployment Of Directional Heterogeneous Sensor Networks

Three-dimensional directional sensor networks is a special form of Wireless Sensor Networks(WSN).Both of them have same characteristics of low cost,low power consumption and large scale,besides,the former combines with three-dimensional environmental characteristics and sensor direction,it is of great significance in practical applications such as special environmental monitoring and emergency rescue.Airborne Wireless Sensor Networks(AWSN),as a typical representative,combines Wireless Sensor Networks and Micro Air Vehicle technology to form the Airborne Perceptual Network System.The composition of heterogeneous networks means the improvement of complexity,which accords with the real environment and the wide application space for the future development.Sensor deployment is one of the important research directions based on Wireless Sensor Networks.The timely and effective target coverage is the main purpose of the deployment research,and it is also the important prerequisite to monitor the sensor network system.Therefore,it is very important to put forward a reasonable WSN sensor sensing model and WSN coverage mechanism.The main contributions are as follows:(1)Research on the three-dimensional heterogeneous sensor networks deployment.First,traditional three-dimensional sensor node sensing model and its shortcomings in the deployment process are introduced.Next,this thesis introduces the improved three-dimensional directional sensor node sensing model and analyses the interaction of heterogeneous sensors in the deployment region.Based on the above model conception,a new deployment algorithm is proposed,and the result and analysis of the algorithm are realized by computer simulation experiment.(2)Research on the large target deployment.Aiming at the diversity and complexity of the volume and shape of the three-dimensional spatial environment,the coverage problem of the target is decomposed into a single target with certain volume and continuous surface area.The deployment algorithm of directional heterogeneous sensor network for large target is proposed,and the result and analysis are realized by computer simulation experiments.(3)Research on deployment problem oriented to complex paths.Aiming at the complexity of the deployment path in the three-dimensional space environment,in order to realize the rapid deployment of sensor nodes to the expected deployment path,the deployment algorithm of the directional heterogeneous sensor network is proposed,which is oriented to complex paths.The result and analysis of the algorithm are realized through the computer simulation experiment.(4)Research on deployment problem oriented to dynamic target.Aiming at the unknown moving direction of movable target in three-dimensional space environment,the traditional sensor networks deployment algorithm cannot deal with the shortcoming of dynamic target and the collision problem that the dynamic target can bring.Based on the above problems,a dynamic target oriented heterogeneous sensor networks deployment algorithm is proposed,and the result and analysis of the algorithm deployment are realized by computer simulation experiment.