MaROS: Information Management Service
- Created on Thursday, 01 September 2011
This software is provided by the Mars Relay Operations Service (MaROS) task to a variety of Mars projects for the purpose of coordinating communications sessions between landed spacecraft assets and orbiting spacecraft assets at Mars. The Information Management Service centralizes a set of functions previously distributed across multiple spacecraft operations teams, and as such, greatly improves visibility into the end-to-end strategic coordination process. Most of the process revolves around the scheduling of communications sessions between the spacecraft during periods of time when a landed asset on Mars is geometrically visible by an orbiting spacecraft. These “relay” sessions are used to transfer data both to and from the landed asset via the orbiting asset on behalf of Earth-based spacecraft operators.
This software component is an application process running as a Java virtual machine. The component provides all service interfaces via a Repre sentational State Transfer (REST) protocol over “https” to external clients. There are two general interaction modes with the service: upload and download of data. For data upload, the service must execute logic specific to the upload data type and trigger any applicable calculations including pass delivery latencies and overflight conflicts. For data download, the software must retrieve and correlate requested information and deliver to the requesting client.
The provision of this service enables several key advancements over legacy processes and systems. For one, this service represents the first time that end-toend relay information is correlated into a single shared repository. The software also provides the first multimission latency calculator; previous latency calculations had been performed on a mission-by-mission basis.
This work was done by Daniel A. Allard, Roy E. Gladden, Jesse J. Wright, Franklin H. Hy, Gregg R. Rabideau, and Michael N. Wallick of Caltech for NASA’s Jet Propulsion Laboratory.
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