Solar System Exploration

By combining the high sensitivity of space telescopes with revolutionary imaging technologies consisting primarily of adaptive optics, the Terrestrial Planet Finder is slated to have imaging power 100 times greater than the Hubble Space Telescope. To this end, Boston Micromachines Corporation, of...

Degra is relevant to NASA current and future work. Degra is currently being used by the Mars Science Laboratory project for prediction of MMRTG performance on Mars. In addition Degra is to be used for future SMD missions where RTG power generation is applied. Degra is a generalized simulation of...

This software models the Delay Tolerant Networking - Licklider Transmision Protocol for JPL's MACHETE (Multimission Advanced Communications Hybrid Environment for Test and Evaluation). The Multi-mission Advanced Communications Hybrid Environment for Test and Evaluation (MACHETE) has been developed...

Models the Delay Tolerant Link State Routing protocol. Analyze the impacts of different DTN routing protocols for NASA missions. This protocol model can assist NASA network designers who wish to use Delay Tolerant Networking protocols.

Models the Contact Graph Routing (CGR) system proposed for future NASA missions and used in DINET1 and DINET2 experiments. Create a simulation environment of Contact Graph Routing that uses the QualNet network simulator and leverage the previously-developed space communication models. This protocol...

Images are tiled at multiple levels of detail and an image browsing application makes requests for tiles instead of entire images, dramatically speeding up image delivery. This solution scales up to images of arbitrary size.

We have developed a machine learning solution called DEMUD (Discovery through Eigenbasis Modeling of Uninteresting Data). DEMUD works by building a model U of the uninteresting class and then identifying items that are maximally anomalous (and therefore likely to be interesting) with respect to...

This software has been designed for simulation of the calibration maneuvers performed by the two spacecraft comprising the GRAIL mission to the Moon, but has potential use for other applications. In simulations of formation flights, one needs to coordinate the spacecraft orbits represented in an...

We computed the threshold over the joint graph between the LDPC decoder and trellis nodes, which represent finite state partial response channels. At the receiver, we discussed two cases: (1) iteratively decode the big graph, namely BCJR-full; (2) only iterative LDPC graphs after taking outputs...

The multi-user modem provides multiple data streams for each user. The supportable data rates depend on the processing throughput capabilities of the AD converter as well as the FPGAs. A single wideband AGC is used to prevent saturation at the output of the AD. Multiple digital AGCs are used to...