In this paper,several methods of the synchronization satellite positioning with the second pulse in TV-signals transmmitted by communication satellite are introduced,and calculation methods about PDOP in each positioning model are given.
给出了在各种观测方法中，地面测站与同步卫星所构成的几何图形强度因子的计算公式。
Application of the object-oriented technology in developing the WEDM drawing software;
面向对象技术在线切割加工图形软件中的应用
Research and Practice of Integrating Drawing and Database;
图形数据库集成研究与实践
For the CAD drawings largely used in measuring and mapping work,the method is studied for quick conversion from DLG to DEM data with VC+ OPENGL software.
针对目前测绘行业中大量应用的CAD图形进行研究,在VC+OPENGL平台下实现了从DLG到DEM数据的快速转换方法,在DEM的基础上进行三维可视化,并解决了CAD矢量数据难以处理的体积计算、坡度计算等技术难题。
The Creation of the Calculation Models of Macrocycle Molecules by Combining of the Graph and Quantum Chemistry Program;
图形软件与量化软件联合用于创建大环分子计算模型
Basic graph drawing based on Windows CE;
基于Windows CE的基本图形绘制
The Display of the Dynamic 3D-Simulationing-graph of Rolling-bearing Based on OpenGL;
基于OpenGL的轴承仿真三维图形动态显示系统
Rail Head Abrasion Monitoring System based on figure technology;
基于图形技术的钢轨头部磨损监测系统