Abstract: . . .  publish and subscribe to data of interest. The data is distributed in a changes-only format, which minimizes the network traffic and volume of data coming into the user’s workstation. The FEP’s interfaces to the other CCS components are isolated via the middleware. System Monitoring - One of the primary Vision 2000 goals was to provide unprecedented engineering support to both scientists and engineers. The System Monitoring subsystem provides an engineering data analysis toolset for general plotting, trending, reporting, and analysis. The automated real-time monitoring component performs fault detection . . .
. . .  2000 represented a challenge to reduce mission costs while vastly improving efficiencies and overall engineering support, without Page 2 1b010 2 introducing increased risk to the spacecraft or the science program. The largest component of the ground system, the Control Center System (CCS), underwent a radical reengineering effort to replace the set of disparate systems that had been designed and developed in the late 70s/early 80s. In short, a world-class ground system for a world-class science observatory. This paper describes the approach, key technologies and architecture components selected to . . .
. . .  integration sites as well as the operational facilities (over 20 instances). The CCS PDT began by evaluating new technologies and COTS products, and prototyping those that showed promise. Concurrently, key spacecraft engineers, flight operations personnel, and system designers undertook a business process reengineering (BPR) activity to first characterize the current processes and then to devise the “new way of doing business.” The resulting future state models guided the development of the CCS architecture. As the transition from BPR to system design engaged, the prototyping activities culminated in . . .
. . .  modification, from a single-server configuration capable of supporting a few users to the operational system capable of supporting hundreds of users during the Hubble’s planned servicing missions. The architecture allows access from anywhere in the world while protecting the command and control functions of the world’s leading scientific on-orbit observatory.  . . .
. . .  remote access for engineering data analysis. One of the key achievements has been the delivery of a system that is scaleable, without software modification, from a single-server configuration capable of supporting a few users to the operational system capable of supporting hundreds of users during the Hubble’s planned servicing missions. The architecture allows access from anywhere in the world while protecting the command and control functions of the world’s leading scientific on-orbit observatory.  . . .
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