基于地图信息传输理论的数据采集与处理模型研究

传统的地图信息传输理论仅仅是在宏观上研究了地图信息传输和控制的一般过程,而对于数字条件下地图信息传输的体系结构研究甚少,理论与实践结合不是很紧密。本文提出了数字条件下地图信息传输的体系结构,将地图信息的传输过程分为物理层、逻辑层、概念层和现实层,探讨了层次之间的协议、接口和服务。最后将理论运用于实践,建立了地图数据采集与处理系统的参考模型和信息传输过程中的各种控制协议,给出了信息损失和失真的具体解决方案。该参考模型在实际的数据采集与处理系统中取得了较好的效果。

Study of data acquisition and processing model based on map information transmission theory

The traditional map information transmission theory only study common process of map information transmission and the theory study a little architecture of the map information transmission under the digital mapping.The integration of theory and practice is not tightness.This paper presents an rchitecture of the map information transmission under the Digital Mapping,which contains physical layer,logic layer,concept layer and realization layer.The paper discusses the protocols,interfaces and services between layers.Based on the theoretic results above,a reference model of data acquisition and processing is established,control protocols in the process of Map information transmission are analyzed and a solution to information loss and distortion is also proposed.The reference model has been acquired good effect on the system of data acquisition and processing.