Research On Service-oriented Collaborative Analysis Method Of Multi-granularity Spatiotemporal Objects

With the continuous development of Pan Spatial Information System(Pan Spatial Information System,PSIS)in spatio-temporal data management,visual expression,advanced spatial analysis and practical applications,multi-granular spatio-temporal objects play a role in dynamic simulation and collaborative analysis in geographic scenarios Plays an important role.In-depth collaborative analysis and research on it can meet the analysis needs of spatio-temporal data in multiple fields,and improve the geographic analysis capabilities and auxiliary decisionmaking capabilities of the full-space information system.However,at present,there are still problems such as the low level of sharing analysis models for analyzing multi-granularity spatio-temporal objects,insufficient dynamic feature description schemes for multi-granularity spatio-temporal objects,and imperfect shared expression system.In order to improve the ability of collaborative analysis of multi-granularity temporal and spatial objects,and improve the level of shared application of analysis models.This paper takes multi-granularity spatiotemporal objects as the core,and conducts in-depth research on its dynamic feature description scheme,analysis methods using shared model services,collaborative interaction and expression strategies.It provides a theoretical basis for digging into the potential value of spatio-temporal data and enhancing the collaborative analysis capabilities of the full-space information system.The main research contents of the thesis are as follows:1)Design of dynamic feature description scheme for multi-granularity spatiotemporal objects This paper proposes a multi-granularity spatiotemporal object dynamic feature description scheme based on the description of the document and the object's own structure.The association and expression relationship between the dynamic characteristic attributes of the object and the time attribute are designed to realize the accurate expression of the temporal and spatial object changes over time.Based on this,the subcontracting and streaming transmission scheme of description documents in the network environment is designed,thereby improving the streaming transmission capabilities of large-scale description documents and enhancing the real-time or near-real-time dynamic expression of multi-granular spatiotemporal objects in the scene.2)Multi-granularity spatiotemporal object collaborative analysis model service-oriented sharing scheme design.Two ways of encapsulation of original model and analysis service are designed to encapsulate the existing source code model,executable program and existing analysis service,and the encapsulated model is researched on multi-model integration based on model network.Finally,the published model service is constructed for model service chain and service network,so as to meet the complex and comprehensive analysis needs of multigranularity spatiotemporal objects.3)Construction of collaborative interaction strategy and collaborative expression strategy.Research and analyze the characteristics of model service interaction and multi-granularity spatiotemporal object interaction,and propose simple interaction strategy,complex interaction strategy and collaborative interaction strategy of analysis model service.A multi-granularity spatio-temporal object state machine is designed to solve the operation conflict problem of multiple clients under collaborative analysis.Finally,a variety of interactive interfaces are designed to meet the needs of users for calling various model service interfaces.4)Based on the above-mentioned research on collaborative analysis of multi-granular spatio-temporal objects,this paper designs a collaborative analysis experiment of multigranular spatio-temporal objects.Researched and built an analysis model encapsulation and service-oriented sharing platform,and based on the interface design scheme for model application,object interaction and other interface development.A collaborative analysis experiment of land subsidence simulation was carried out,which realized the dynamic change simulation of land subsidence,which can analyze the change trend of land subsidence more comprehensively and intuitively.Developed an emergency joint rescue collaborative analysis system,which realized the expression of different forms of the same multi-granular spatiotemporal object under different clients,and met the needs of multi-departmental joint analysis.Through the above-mentioned experimental analysis,it can be obtained that the multigranularity spatio-temporal object collaborative analysis method designed in this paper is scientific and feasible.