SPSCGR generates a contact graph suitable for use by the ION (Interplanetary Overlay Network) DTN (Delay/Disruption Tolerant Network) implementation from data provided by the JPL SPS (Service Preparation System) Portal. Prior to SPSCGR, there was no way for a mission or other entity to route DTN traffic across the DSN without manually constructing a contact graph. SPSCGR automates this process of contact graph construction.
The tool generates a syntactically correct DTN contact graph from antenna scheduling information from the DSN SPS Web portal. The DTN contact graph is a data structure used by the JPL-developed ION implementation of the internationally standardized DTN specification to make efficient data routing decisions.
SPSCGR runs on a variety of platforms with a minimum of dependencies.
This work was done by Philip C. Tsao of Caltech for NASA’s Jet Propulsion Laboratory. This software is available for commercial licensing. Please contact Dan Broderick at
