Software

Currently, APET includes a modified version of the Rotorcraft Noise Model (RNM, version 7). It also includes the newly developed Spectral Attenuation Method (SAM), which contains the Ray Tracing Program (RTP) and two versions of a Green's Function Parabolic Equation (GFPE) code. The third component...

AUTONOMIE is a MATLAB-based software environment and framework for automotive control system design, simulation, and analysis. It simulates subsystems, systems, or an entire vehicle, and predicts and analyzes fuel efficiency and performance. The software performs analyses and tests for virtual...

One of the objectives of the In-Situ Resource Utilization (ISRU) RESOLVE project was to extract water from lunar regolith by heating and then capturing and quantifying the released water. A potentially large error in...

This innovation addresses several critical issues in the construction of cut control volumes using embedded-boundary Cartesian mesh generators. The innovation considers the case of a surface triangulation intersecting the face of a Cartesian hex...

The fundamental idea behind the Mission Control Technologies (MCT) project is to build software from pieces that can be assembled by end users to create integrated visualizations. Applications are eliminated in favor of compositions of live data objects that can be combined in different ways for...

Large-scale systems engineering projects involve multiple teams of engineers working in parallel. These projects typically include numerous human factors challenges, many of which first become evident during the integration stage. Human factors evaluations are essential in gathering human...

When performing spacecraft simulations, developers sometimes need to feed the simulation with a distance between two objects along a certain direction vector. For example, if a spacecraft is approaching an asteroid and needs to simulate a laser rangefinder, the simulation would need to detect what part...

The iOrca outlier detection algorithm is based on the K-nearest neighbors approach. It calculates the distances across the dataset to determine if data points are near or far away from their set of neighbors. If a point has an unusually large distance to its neighbors, it is considered an outlier and of interest to the user....

The objective of the Launch Trajectory Acquisition System (LTAS) Source Slaving Selector (LS3) Analyzer application is to convert recorded data files — which are generated by the LTAS Source Slaving Selector (LS3) application in binary format — to human-readable text files as per a variety of options...

NASA has developed a new method for analyzing complex system behavior that also may be viewed as a type of data visualization and decision support tool. Large complex control systems may have thousands or even millions of sensors, each providing some type of signal that...

The Common Access Manager (CAM) software was developed to control access to functions and data for mission control, telemetry, tracking, instrument data, and other ground data system capabilities. The CAM software is used by Advanced Multi-Mission Operations System (AMMOS) and Deep Space Network (DSN) subsystems,...

In high-end computing environments, remote file transfers of very large data sets to and from computational resources are commonplace, as users typically are widely distributed across different organizations and must transfer in data to be processed, and transfer out results for further analysis. Local...

The objective of the LTAS Simulator application is to transmit one or more streams of simulated LTAS data frames in User Datagram Protocol (UDP) packets to the network. Each LTAS data frame is filled with simulated data values, with each data field determined using several methods: 1) constant...

The Inductive Monitoring System (IMS) software uses data mining techniques to automatically characterize nominal system operation by analyzing archived system data. These nominal characterizations are then used to perform near-realtime...

The Internet Engineering Task Force (IETF) standardized Bundle Protocol (BP) enables data transfer using “bundles” over a Delay/Disruption Tolerant Network (DTN). BPTables is a bundle filtering framework that enables the establishment of barriers between more and less trusted BP network domains, and...

Architecture development often is conducted prior to system concept design when there is a need to determine the best-value mix of systems that works collectively in specific scenarios and time frames to accomplish a set of mission area objectives. Conducted prior to Pre-Phase A of the...

Current human spaceflight requirements limit the number of hours a crewmember can be outside of the habitation unit to 8 hours in a 48-hour period, and 24 hours in a seven-day period. This time must be appropriately balanced to complete science, exploration, and maintenance tasks. Off-days can be used for site transit...

Due to limitations imposed by transistor physics as device geometries continue to get finer and finer, the time when each new generation of processors was clocked faster than its predecessors is largely over. Nevertheless, as individual processor cores get smaller, chip manufacturers have turned instead to...

Concept design plays a central role in project success for space missions, as the product of concept design effectively locks in the majority of system lifecycle cost. It involves a concurrent investigation of requirements and multiple mission characteristics...

Model-based diagnosis deals with the problem of diagnosing faults in systems using a model of the system for guidance. This problem is complicated by the presence of hybrid dynamics in the system (continuous evolution of the system interspersed with discrete events like commands to...