基于事件的时空数据模型应用研究

Application and research of an event-based spatio-temporal data model

本文首先分析和比较了几种有代表性时空数据模型的特点和存在的局限性 ,对基于事件的时空数据模型进行了改进 ,并提出了利用亲缘继承关系进行历史回溯查询 ,根据具体的实际应用 ,在现有成熟的ARCGIS平台上进行扩展 ,验证了该模型的有效性。实践表明 :利用该模型可以有效的进行各种时间、空间和属性的互查 ;时间因素和空间对象的空间特征和属性信息分开存储管理 ,便于时空分析 ,适于进行地理事件与空间对象状态因果关系的推理 ;减小了数据的存储空间 。

By analyzing the characteristic and limitations of several typical spatio-temporal data models,the extension methods of improvement were presented for an event-based spatial-temporal data model in the paper.It was proposed using inherited relation could do history retrospect query effectively.According to practical application and based on the ARCGIS software,the model is developed and tested.The experiment shows that this model can mutual query with time,space and attribute,the separate storage and management of time and spatial object is useful to spatio-temporal analyses and causal reason between geographical event and spatial object,the storage space and redundance of data is reduced.