The Algorithm Timing and Dependency Simulation (ATDS) created within ExtendSim, simulates multiple orbiting weather satellites, data retrieval through global receptors, and weather product generation and distribution.
ATDS has been successfully used by NPOESS to size the architecture and evaluate cost/performance trades for more than a decade. It analyzes processing capacity and memory, evaluates architectural alternatives, and supports cost/quality/latency trades with its unique method of modeling weather science with chains of interdependent algorithms.
NOVA can be dynamically commanded to display satellite scan patterns by means of an IP-based text messaging interface. A custom "wrapper" Windows DLL, developed for the NPOESS program, allows the ExtendSim ATDS simulation to access Winsock functions, permitting messaging from ExtendSim to NOVA.
The combination of ATDS with NOVA, a visualization tool that supports 3D views of astronomical objects, has been used for system performance analysis and demonstrations on the NPOESS weather satellite program.