Design and implementation of WebGIS monitoring system based on client callback technique
Wunian Yang · Cehui kexue · 2008
Introducing webgis technique into online monitoring field has great application value,which can graphically express the space distribution of monitoring targets and greatly enhance the convenience of monitoring systems.But limited by its own service mechanism and ineffective network environment,traditional webgis can't realize real monitoring function.Having analyzed the architecture and developing methods of ArcIMS,we abundantly adopted client callback technique in the process of designing webgis monitoring system,which can help webgis to overcome original bottlenecks and realize real online monitoring.As a demonstration,the environmental pollution monitoring system of Beijing Chaoyang district was developed,which realized not only pollution sources data visualization but also online monitoring,statistical analysis.The system can provide a scientific basis for environmental protection and paroxysmal environmental accident handling.The designing ideas and implementation methods presented in the article are valuable reference for developing similar systems in the field such as environmental monitoring,mine safety,and marine monitoring.