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WebTopGPS is a software system that lets differential GPS data sets to be remotely processed by Trimble's Pathfinder Office software.

Internet distributed computing is one alternative to the current dominant practice of local computing. Internet computing requires both general computer/network systems and specific domain knowledge. Getting legacy SW to run in the Internet is possible and, sometimes, the optimal —or even, the only— solution under time or budget restrictions.

However, optimal performance and maintenance are achieved through distributed architectures whose design requires a multidisciplinary team with intimate knowledge of the application domain. The application’s domain knowledge is necessary to define the building components of the distributed application in a proper way. Typical components of geo-applications are georeference frame servers. geoid servers, coordinate transformation servers, elevation data servers, etc.

WebTop computing is a particular case of Internet computing where the user interface is offered in a www page.

Through WebTopGPS GeoNumerics gained practical experience in the construction of geodetic and remote sensing distributed components accessible as system geo-services through servlets. The resulting set of services serves both educational, research and even production needs.

Santiago e Cintra offered WebTopGPS as an operational, free service for all his customers, who could therefore process differential GPS data sets over the internet.

WebTopGPS was developed by GeoNumerics and the Institute of Geomatics.