107 Modified Rocket Multi-munition Networking And Coordinated Positioning Research

The 107 ballistic correction rocket has low cost and certain strike precision.It has a high cost-effectiveness by synergizing multiple or even large-scale 107 ballistic correction rocket to attack targets.Designing routing algorithm suitable for high-speed moving rockets network with frequent topological changes is the premise of realizing real-time and reliable information sharing between rocket nodes and the key technology of 107 correction rockets cooperative attack.The reliable and high-precision positioning technology of the nodes in the rockets network has a great influence on the effectiveness of multi-rocket cooperative attack.The research work of this paper mainly focuses on two key technologies: the routing protocol of cluster network and the self-positioning and cooperative positioning of multi-rocket107 ballistic correction rocket network node moves at high speed and changes in network topology frequently,which easily leads to frequent disconnection of links between rocket nodes and serious degradation of network performance.To solve the above problems,this paper designs a speed-aware AODV routing algorithm SA-AODV.In the routing discovery stage,SAAODV chooses a part of the nodes within the communication range and with less relative motion speed as routing nodes according to the communication radius of the nodes and the relative motion speed between the nodes.Then,the effective lifetime of each route that can reach the destination node is estimated by the relative motion speed between the nodes.The optimal routing scheme is selected according to the effective lifetime.OPNET network simulation shows that SA-AODV routing algorithm is suitable for high-speed mobile node networks.In the battlefield environment,GPS signals are vulnerable to interference from the enemy,which leads to the decline of rocket-borne GPS positioning accuracy or even leads to rocketborne GPS can’t be positioned.Based on the 107 rocket multi-missile network,a multi-rocket coordinated positioning method is designed in this paper.According to the number of positioning satellites observed by GPS receivers carried by rocket nodes,this algorithm chooses different positioning modes of nodes.When the number of positioning satellites observed by the nodes is less than 4,the trilateral positioning method based on wireless ranging is selected to locate the nodes.When the number of positioning satellites observed is less than 6 and more than 4,wireless ranging positioning and GPS combined positioning is adopted,when the number of observed satellites is greater than or equal to 6,adopt the way of GPS single positioning.The results of simulation with MATLAB and small-scale UAV experiments show that the multi-missile coordinated positioning algorithm can effectively improve the positioning accuracy and reliability of missile nodes in the disturbed environment of GPS signals.The experimental data show that the success rate of multi-rocket coordinated positioning is 100%,and the accuracy of horizontal positioning is improved by 47.5%.