Research and design of multi-temporal tile service data model for incremental updating
With the improvement of the temporal resolution of remote sensing images,the application de-mand of multi-temporal tile service is gradually increasing.However,the existing multi-temporal tile service based on snapshot image sequence model has many problems in data updating,version manage-ment,service release and client access.In order to reduce the data redundancy and improve the service publishing efficiency,this paper designs a multi-temporal tile data model for incremental updating based on the time snapshot image sequence model and the discrete grid unit list model,it realizes the incremen-tal updating and storage of raster tile data,solves the contradiction between the traditional multi-temporal tile storage efficiency and query efficiency.Based on the existing REST style image tile map services,the multi-temporal tile service interface is designed and implemented,which can be applied to multi-tempo-ral tile service release and provide geographic information service support for disaster emergency re-sponse,urban planning and ecological environment protection.
spatial-temporal data modelmulti-temporal tile servicesincremental updating
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