Tech Briefs

Relay Forward-Link File Management Services (MaROS Phase 2)

This software provides the servicelevel functionality to manage the delivery of files from a lander mission repository to an orbiter mission repository for eventual spacelink relay by the orbiter asset on a specific communications pass. It provides further functions to deliver and track a set of missiondefined messages detailing lander authorization instructions and orbiter data delivery state. All of the information concerning these transactions is persisted in a database providing a high level of accountability of the forwardlink relay process.

This is an improvement over legacy processes that required lander client users to log into orbiter mission workstations and run orbiter-specific applications. The legacy process provided only a simple e-mail indicating success of transaction, and no further accounting of the forward-link transaction.

The Phase 2 MaROS forward-file management functions represent a significant upgrade of this relay system. This version provides a lander team the capability of selecting a set of “forwardlink” files to be radiated to an orbiter for relay during a chosen communications window. These forward-link files contain critical flight data such as spacecraft command sequences and flight software uploads; this new MaROS functionality is classified Class B software. This new software version also includes the capability for lander and orbiter team members to associate predefined messages to the chosen set of forward-link files. Lander teams can specify authorizations for the orbiter team such as “go for radiation,” and orbiter team members may specify status messages such as “onboard spacecraft.” All of the status data is tracked in a database and provided via a shared service interface. The system provides a high level of accountability into the forward- link process.

This work was done by Daniel A. Allard, Michael N. Wallick, Franklin H. Hy, and Roy E. Gladden of Caltech for NASA’s Jet Propulsion Laboratory.

This software is available for commercial licensing. Please contact Dan Broderick at This email address is being protected from spambots. You need JavaScript enabled to view it. . NPO-47942

This Brief includes a Technical Support Package (TSP).

Relay Forward-Link File Management Services (MaROS Phase 2) (reference NPO-47942) is currently available for download from the TSP library.

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