实时GIS时空数据模型

为满足动态目标与传感器等实时观测数据获取、存储、管理、分析与可视化的要求，需要发展一种新型地理信息系统—实时GIS。本文根据实时GIS中各种地理要素的特点以及存贮管理要求，提出了一种面向动态地理对象与动态过程模拟的实时GIS时空数据模型，它将时空过程、地理对象、事件、事件类型、状态、观测等相关要素整合在一个时空数据模型中。基于该模型研发了新一代实时GIS，并以四种动态地理对象（包括移动对象、原位传感器对象、视频对象和过程模拟对象）的时空数据的实时接入、存储与可视化为例，验证的模型的可行性。

Spatiotemporal Data Model for Real-time GIS

Abstract: In order to satisfy the requirement of real-time observation data acquisition, storage, analysis and visualization for moving object and sensor, a new type of GIS – Real-time GIS – is needed to develop. A Real-time GIS spatiotemporal data model is proposed for dynamic geographic object and dynamic process simulation according to the characteristics of various geographic features and the requirements of storage management in Real-time GIS, the model integrates some related elements - spatiotemporal process, geo-object, event, event type and state. A new real time GIS based on the spatiotemporal data model has been developed. This paper takes spatiotemporal data real-time access, storage and visualization of four dynamic geographic objects (moving object, situ object, video object and process simulation object) as an example and verifies the feasibility of the model.