Prospect model simulation based on J2EE

The standardized spectral database of the typical objects on land surface provides the simulation of these objects with models accessible via Internet for the digital agriculture plan. The architectural solution based on Oracle+COM+ASP can be only applied on Windows Platforms. For meeting the requirement of the portability across the different platforms, the new architecture as Oracle+EJB+JSP is proposed. The spectral simulation model is implemented as EJB which can be ported into any new systems. Furthermore, with the field spectral data and the descriptive parameters accommodated in this mass database of the standardized spectral a suite of EJB Components has been developed in an attempt to obtain the descriptive parameters from the database which are considered as the input parameters for the models. It makes a great improvement on the rationality of the input parameters and the reliability evaluation about the simulated results. It also meets the requirements about the digital agriculture in terms of the remote execution of the models, remote reference to the prior knowledge, the on-line display and download of the simulated results. A case study about the Prospect Model is illustrated in this paper as well