Last year, the Simulation Interoperability Standards Organization (SISO) inaugurated the now annual High Level Architecture (HLA) Smackdown at the Spring Simulation Interoperability Workshop (SIW). A primary objective of the Smackdown event is to provide college students with hands-on experience in the High Level Architecture (HLA). The University of Alabama in Huntsville (UAHuntsville) fielded teams in 2011 and 2012.This paper concentrates on the first two federates by describing the functions, algorithms, the modular FOM, experiences, lessons learned and recommendations for future Smackdown events.

关键词：通信；互操作性；通信卫星；月球卫星；算法设计；无线电通信；客户服务器

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The long-term goal is to significantly advance underwater acoustic communication technologies for autonomous distributed underwater networks, through innovative signal processing, coding, and navigation algorithms. Providing highly reliable and high data rate communication links will be critical towards the development of a new era of underwater distributed networks.We have three objectives in this project: (1) Advanced communication techniques of sparse channel sensing and nonbinary LDPC coding; (2) High-resolution ranging and navigation; (3) Testbed development and medium access control. We plan to develop a network testbed to illustrate the cooperative networking scenario.

关键词：通信；水声学；水通信；信号处理；稀疏信道感应；编码；导航

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关键词：通信；空间通信；软件重用；空间站；系统集成

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This study investigates the effects of two technical enablers: Automatic Dependent Surveillance - Broadcast (ADS-B) and digital datalink communication, of the Federal Aviation Administration s Next Generation Air Transportation System (NextGen) under two separation assurance (SA) system architectures: ground-based SA and airborne SA, on overall separation assurance performance. Datalink performance such as successful reception probability in both surveillance and communication messages, and surveillance accuracy are examined in various operational conditions. Required SA performance is evaluated as a function of subsystem performance, using availability, continuity, and integrity metrics to establish overall required separation assurance performance, under normal and off-nominal conditions.

关键词：通信；脉冲通信；广播；可靠性分析；数据链

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Technology for unmanned aircraft has advanced so rapidly in recent years that many new applications to public and commercial use are being proposed and implemented. In many countries, emphasis is now being placed on developing the means to allow unmanned aircraft to operate within non-segregated airspace along with commercial, cargo and other piloted and passenger-carrying aircraft.This paper provides a description of the CNPC system, an overview of NASA's CNPC project, and current results in technology assessment, air-ground propagation characterization, and supporting system studies and analyses will be presented.

关键词：通信；通信网络；地面控制；无人驾驶飞机；支撑系统；负载

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Laser Shot Peening without protective Coating (LPPC) was performed on SS304 austenitic stainless steel using a 300 mJ, 10 ns pulse, 1064 nm wavelength Nd:YAG laser with three different pulse densities. A thin layer of water was used as a confinement layer. The peened specimen was characterised with XRD, AFM and a Profilometer. The stress evaluated at the surface of the laser peened sample shows a maximum compressive stress of 1.6 GPa. The surface roughness and depth profile of microhardness before and after LPPC were investigated.The LPPC region indicate substantial improvement in microhardness and compressive residual stress, with marginal increase of surface roughness.

关键词：钢铁；激光冲击强化；脉冲密度；局限层

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With a growing popularity of web applications,new technology can be adopted to create a 3D application for robotics simulation without plug-ins or third party components based on HTML5 and WebGL.By the use of 3D modeling software Remo3D,the three-dimensionally geometric model of robots links is built up.The standard COLLADA is used as a file format for storing the scene graph structure of robot model.The application uses open standards and can be run in any modem browser on PC or any smart device without installation.

关键词：光机电；机器人；WebGL；HTML5；机器人仿真

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6-DOF parallel robot forward kinematics can be achieved by Newton-Raphson method with more accurancy,but the result depends on the offer of initial value.It can definitely calculate the result by genetic algorithm,however,more evolved algebra is needed to make it more accurate,and sometimes it hardly meets the requirement by concurrent control.This article points to use the result of genetic as the initial value of algorithm,and ultimately make use of iteration to complete the forward kinematics.High accuracy and speed are the main features of this calculation,and another one is interpreting from the implementation point of view,which is very practical and meet the concurrent control through experiment.

关键词：光机电；机器人；正向运动学；牛顿迭代法；遗传算法

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In order to improve the sense of cooperation of robotic fishes between each other to complete the task with high efficiency,this paper presents a path planning method for multi-robot fish based on the cooperative game model.With a mathematical model established on the cooperative game which is based on the game theory,the robotic fish in this system corresponds to the other participants in the game,benefit function of the game player on the cooperation model of multi-robot fish path construction is studied in this paper,which gets system Pareto optimal solution,then getting the optimal path of the entire system.Using the above method,the authors simulate and analyze on the robotic fish in water 2D simulation platform,and to use Matlab to simulate robot fish's track.The results of analysis indicate:Applying the path planning theory in the multi-robot fish movement system is effective and feasible,and that avoids planning only a single robotic fish's optimal path in the system,while leaving the movement of system in the beneath coordination.

关键词：光机电；机器人；合作博弈；效益函数；路径规划

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Museum commentary robots usually have many functions,such as man-machine interaction,open language mode,actions show,and so on.The robot introduced in this paper uses cameras,infrared sensors and MP3 module to realize interpreting function and motion in accordance with the desired trajectory in the museum.This work makes up the blank space our school museum commentary robot and is benefit to promote student's positivity for museum knowledge.At the same time,this work will lay the foundation of next step commentary robot with open language mode and facial expression.

关键词：光机电；机器人；摄像机标定；路径规划；可视化控制

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