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| 1 | 一种便携式远距离无线电测距系统设计显示文摘针对传统超声、雷达、图像等测距方法存在的传输距离近、可靠性差、价格昂贵等问题,设计了基于双GPS的便携式远距离无线电测距系统,该系统集控制、存储、通信等模块于一体,实现了远距离无线电测距,且便于携带和探测。实验表明,当两地距离为35 m时,测量结果在34.3~36.1 m之间,误差范围为3.2%;当距离为2 km时,误差范围仅为0.23%。总之,该系统测距范围大、工作稳定,解决了远距离条件下测距的难题,在探测领域中具有较高的应用价值。 | 赵榉云 苏新彦 姚金杰 周建会 | 2011 | 核电子学与探测技术2011，31，7： | 3 |
| 2 | BNE-based concurrent transmission considering channel quality and its PSO searching strategy in Ad Hoc networks显示文摘The paper proposes a decentralized concurrent transmission strategy in shared channels based on an incomplete information game in Ad Hoc networks.Based on the nodal channel quality,the game can work out a channel gain threshold,which decides the candidates for taking part in the concurrent transmission.The utility formula is made for maximizing the overall throughput based on channel quality variation.For an achievable Bayesian Nash equilibrium(BNE) solution,this paper further prices the selfish players in utility functions for attempting to improve the channel gain one-sidedly.Accordingly,this game allows each node to distributedly decide whether to transmit concurrently with others depending on the Nash equilibrium(NE).Besides,to make the proposed game practical,this paper next presents an efficient particle swarm optimization(PSO) model to fasten the otherwise very slow convergence procedure due to the large computational complexity.Numerical results show the proposed approach is feasible to increase concurrent transmission opportunities for active nodes and the convergence can be swiftly obtained with a few of iteration times by the proposed PSO algorithm. | Chen Chen Xinbo Gao Qingqi Pei Xiaoji Li | 2012 | Journal of Systems Engineering and Electronics2012，23，5： | 1 |
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