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Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
For much of the past decade NASA and other organizations have been developing the Disruption Tolerant Networking protocol suite with a primary focus on bringing internet-like functionality to space missions. Now that the core protocols are complete, engineers are beginning to incorporate DTN into mission system designs. When we look across the NASA mission needs over the next decade, there are multiple...
Autonomous mobile robots use vision sensors for navigation due to its ability to provide detailed information of the environment. Visual perception of an environment, is an important capability for mobile robots, so many efforts are leading the research community for such a fundamental and challenging task. An aspect to emphasize is that vision systems have to cope with uncertainty because sensors...
This paper presents the application of the Anisotropic Fast Marching Method to the path planning problem of robots moving in spatial environments. The slope of a terrain should be considered in a tensorial way because at any point on a mountainside there are two main slopes: the maximum, which is the slope of the gradient, and the minimum, which is the perpendicular slope to the gradient. The resulting...
In this paper we present an architecture that embeds an automatic task planner into the Robotic Operating System (ROS). The plans generated by the planner are automatically converted into executable behaviour trees. These behaviour trees are used as the basis of an execution monitoring process that is able to detect when the plan fails, trying to repair it or triggering a replanning process. This...
This paper describes the MEDA instrument and its different subsystems, including the proposed data management architecture (hardware and software) supporting MEDA data acquisition, storage, processing and transmission. Mission planning and operations are based on Observation Tables that allow the instrument to operate completely autonomously during the mission (i.e. even when the rover computers are...
A novel way of extracting cellular automaton rules from a single automaton state is presented. The method, with minimal computation and storage, can be used to estimate rules to within approximately 5% on the class of density well cellular automata. Application of this method to image processing in the context of the search for life is then discussed. In particular the use of cellular automata as...
Solar Orbiter is a European Space Agency mission dedicated to Solar and Heliospheric Physics, currently planned for launch in February 2019. Due to its telemetry limitation, the mission planning should be carefully done to maximize scientific return. This work defines and simulates the scientific plan to address all sub-objectives under general Objective 3 of the Solar Orbiter mission: 'how do solar...
The XTCE (XML Telemetric and Command Exchange) standard provides a way to describe space mission telemetry and command "databases" (or dictionaries) to be exchanged across centers and space agencies. Having a standard format for describing the telemetry and command formats allows for the development or adoption of compatible tools and significantly reduces the amount of custom software development...
A single thruster attitude and de-orbital control method is proposed, capable of delivering a small spin stabilized probe with payload to the surface of an airless body such as the Moon. Nutation removal, attitude control and fast large angle maneuvers have been demonstrated and shown to be effective using a model of a commercially available single standard cold gas pulse width modulated controlled...
The design of a Compact Dual-band Equatorial helix antenna is presented. These antennas are used for Telemetry, Tracking, and Control (TTC) of satellites from the terrain base station. A simulation-optimization process is presented, a simulation tool named MONURBS is linked with a well-known multi-objective algorithm (NSGA-II) in order to design and optimize the parameters of the antenna. The size...
Design principles gathered from over 20 years of experience in research, implementing and protecting mission critical flight systems used by the Navigation and Mission Design Section at the Jet Propulsion Laboratory are reviewed. The work of spacecraft navigation involves rigorous requirements for accuracy and completeness, often carried out under uncompromising critical time pressures. Robust and...
Spacecraft housekeeping telemetry is monitored at flight control centers by the operations engineers using tools that can perform limit checking or simple trend analysis. Recent developments in machine learning techniques for anomaly detection enables the implementation of more sophisticated systems that aim to augment current state-of-the-art mission tools to provide valuable decision support for...
A machine learning approach for the operational situational awareness (OSA) in flight operations is presented. The spacecraft health and safety telemetry are generally time dependent and periodical. The machine learning algorithms, such as neural networks, are used to capture the time dependent trend of the telemetry datasets characterized by their data patterns and noise level, which provides a direct...
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