核动力装置模拟器就地系统中双机通讯的实现

利用微机软仿真实现模拟器就地系统中仪表的动态实时显示和开关的实时控制，可以节省的大量外部设备，提高系统可扩充性。本文介绍了该技术实现的方法，即服务器与客户机之间数据双向通讯的实现途径。经实践验证，本文的方法是正确、可行的。     

GFMIMU/GPS组合导航系统信息融合技术研究

GFMIMU/GPS(Gyroscope Free Micro Inertial Measurement Unit/Global Positioning System)组合导航系统具有抗高g值冲击、低成本、长寿命、较高精度等优点,在低成本精确制导武器和微小型无人机具有广阔的应用前景。针对工程应用中信息融合的精度和实时性两方面的要求,运用基于模型误差预测的扩展卡尔曼滤波MEP-EKF(Extended Kalman Filter base on Model Error Predictive)方法,将MEMS(Micro Electromechanical Systems)加速度计的误差作为模型误差来考虑,对GFMIMU/GPS组合导航系统进行建模仿真,将其与EKF和UKF(Unscented Kalman Filter)方法进行了仿真比较,在方位误差角的估计上取得了比他们精度高的仿真结果,而且MEP-EKF所需时间是UKF的10%.     

六自由度飞行模拟器体感模拟算法及仿真实现

针对国内首台直九飞机六自由度模拟器，研究了与之相应的体感模拟算法，并应用MATLAB及VC 建立了模型。在此模型的基础上，对一组实际飞行数据进行了仿真计算和分析。结果表明，该算法为充分发挥六自由度模拟器模拟能力提供了一种有效的方法。     

飞行模拟器六自由度运动系统的关键技术及研究现状

作为飞行模拟器载体的并联六自由度运动系统是飞行模拟器非常重要的组成部分。其本质是由数字计算机实时控制并能提供俯仰、滚转、偏航、升降、纵向和侧向平移的六自由度瞬时过载仿真设备。本文从研制者的角度出发，评述了研制高性能飞行模拟器六自由度运动系统所需的关键技术及其国内外的研究进展。结合样机设计与制造的实践经验，提出亟需解决的若干理论与技术问题，以及解决这些问题的可行途径。     

The General Machining Process Simulator GMPS

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The detection of structural deformation errors in attitude determination

In the determination of the attitude parameters from a multi-antenna GPS array, one of the major assumptions is that the body frame is rigid at all times. If this assumption is not true then the derived attitude parameters will be in error. It is well known that in airborne platforms the wings often experience some displacement during flight, especially during periods of initializing maneouvres, such as taking off, landing,and banking. Often it is at these points in time that it is most critical to have the most precise attitude parameters.There are a number of techniques available for the detection of modeling errors.The CUSUM algorithm has successfully been implemented in the past to detect small persistent changes. In this paper the authors investigate different methods of generating the residuals, to be tested by the CUSUM algorithm, in an effort to determine which technique is best suited for the detection of structural deformation of an airborne platform. The methods investigated include monitoring the mean of the residuals generated from the difference between the known body frame coordinates, and those calculated from the derived attitude parameters. The generated residuals are then passed to a CUSUM algorithm to detect any small persistent changes. An alternative method involves transforming the generated residuals into the frequency domain through the use of the Fast Fourier Transform. The CUSUM algorithm is then used to detect any frequency changes. The final technique investigated involves transforming the generated residuals using the Haar wavelet. The wavelet coefficients are then monitored by the CUSUM algorithm in order to detect any significant change to the rigidity of the body frame.Detecting structural deformation, and quantifying the degree of deformation, during flight will ensure that these effects can be removed from the system, thus ensuring the most precise and reliable attitude parameter solutions. This paper, through a series ofsimulations, will assess the effectiveness of the above mentioned techniques for detecting structural deformation effects on a GPS multi-antenna array. These principles are then tested with experimental data.     

船舶自动化电站系统仿真

应用系统建模技术和计算机系统仿真技术，在研究了某大型船舶电力系统的基础上，运用MATLAB软件，结合船舶柴油机发电机组和异步电动机的特性，完成了船舶自动化电站系统的建模。实现的船舶自动化电站仿真器系统特性与实际系统特性接近。该系统对船舶轮机员技术培训和船舶电力系统的故障分析具有很高的价值。     

Analysis and compare of location technologies supporting LBS

Location technology is the key part of location based service. Different technologies have different accuracy, modifying to network and cost of operating. Also these technologies have limitation to network. This paper compares existing popular location technologies and gives some suggestions about choosing of location technologies in GSM and CDMA systems.     

3S技术在土地资源管理中的应用

"3S"技术作为当前信息管理的高新技术,在土地资源管理中具有广阔的应用前景。本文在介绍RS,GIS,GPS及"3S"集成的基础上,从土地利用调查、土地利用总体规划、土地利用动态监测、土地资源评价和土地整理五个方面简要阐述了"3S"技术在土地管理中的应用,并展望了"3S"技术在土地管理中的应用前景。     

浅析GPS高程测量在水利工程中的应用

简要介绍了GPS高程测量的原理,结合其在水利工程中的应用实例,对GPS高程测量技术进行了探讨。