Software

Sasquatch Footprint Tool

The Crew Exploration Vehicle Parachute Assembly System (CPAS) is the parachute system for NASA’s Orion spacecraft. The test program consists of numerous drop tests, wherein a test article rigged with parachutes is extracted or released from an aircraft. During such tests, range safety is paramount, as is the recoverability of the parachutes and test article. It is crucial to establish an aircraft release point that will ensure that the article and all items released from it will land in safe locations. A new footprint predictor tool, called Sasquatch, was created in MATLAB. This tool takes in a simulated trajectory for the test article, information about all released objects, and atmospheric wind data (simulated or actual) to calculate the trajectories of the released objects. Dispersions are applied to the landing locations of those objects, taking into account the variability of winds, aircraft release point, and object descent rate.

Posted in: Software, Briefs

Read More >>

Test Waveform Applications for JPL STRS Operating Environment

This software demonstrates use of the JPL Space Telecommunications Radio System (STRS) Operating Environment (OE), tests APIs (application programming interfaces) presented by JPL STRS OE, and allows for basic testing of the underlying hardware platform. This software uses the JPL STRS Operating Environment [“JPL Space Tele com munications Rad io System Operating Environment,” (NPO-4776) NASA Tech Briefs, Vol. 37, No. 1 (January 2013), p. 47] to in teract with the JPL-SDR Software Defined Radio developed for the CoNNeCT (COmmunications, Navi ga tion, and Networking rEcon figur able Testbed) Project as part of the SCaN Testbed installed on the Inter national Space Station (ISS). These are the first applications that are compliant with the new NASA STRS Archi tecture Standard.

Posted in: Test & Measurement, Software, Briefs

Read More >>

Changing Face of Robotics

Robotic technology has improved dramatically in the past decade, and applications are getting more exciting. A whole new generation of engineering and scientific techniques have emerged that has fuelled the rapid pace of innovation within the modern robotics community. What was once the stuff of science fiction seems to be within reach for the engineering community! The use of symbolic techniques has rapidly evolved in the robotics industry, and many streamlined products are beginning to enter mainstream engineering. MapleSim, the system-level modeling platform from Maplesoft, is an example. Aside from the introduction of a component-based physical modeling graphical user interface, there are other technological advancements under the hood.

Posted in: Software, White Papers

Read More >>

Change-Based Satellite Monitoring Using Broad Coverage and Targetable Sensing

A generic software framework analyzes data from broad coverage sweeps or general larger areas of interest. Change detection methods are used to extract subsets of directed swath areas that intersect areas of change. These areas are prioritized and allocated to targetable assets. This method is deployed in an automatic fashion, and has operated without human monitoring or intervention for sustained periods of time (months).

Posted in: Software, Briefs

Read More >>

Eyes on the Earth 3D

Eyes on the Earth 3D software gives scientists, and the general public, a realtime, 3D interactive means of accurately viewing the real-time locations, speed, and values of recently collected data from several of NASA’s Earth Observing Satellites using a standard Web browser (climate.nasa.gov/eyes). Anyone with Web access can use this software to see where the NASA fleet of these satellites is now, or where they will be up to a year in the future. The software also displays several Earth Science Data sets that have been collected on a daily basis. This application uses a third-party, 3D, realtime, interactive game engine called Unity 3D to visualize the satellites and is accessible from a Web browser.

Posted in: Information Sciences, Software, Briefs

Read More >>

Target Trailing With Safe Navigation for Maritime Autonomous Surface Vehicles

This software implements a motionplanning module for a maritime autonomous surface vehicle (ASV). The module trails a given target while also avoiding static and dynamic surface hazards. When surface hazards are other moving boats, the motion planner must apply International Regulations for Avoiding Collisions at Sea (COLREGS). A key subset of these rules has been implemented in the software. In case contact with the target is lost, the software can receive and follow a “reacquisition route,” provided by a complementary system, until the target is reacquired. The programmatic intention is that the trailed target is a submarine, although any mobile naval platform could serve as the target.

Posted in: Information Sciences, Software, Briefs

Read More >>

Adams-Based Rover Terramechanics and Mobility Simulator — ARTEMIS

The Mar s Explorat ion Rover s (MERs), Spirit and Opportunity, far exceeded their original drive distance expectations and have traveled, at the time of this reporting, a combined 29 kilometers across the surface of Mars. The Rover Sequencing and Visualization Program (RSVP), the current program used to plan drives for MERs, is only a kinematic simulator of rover movement. Therefore, rover response to various terrains and soil types cannot be modeled. Although sandbox experiments attempt to model rover-terrain interaction, these experiments are time-intensive and costly, and they cannot be used within the tactical timeline of rover driving. Imaging techniques and hazard avoidance features on MER help to prevent the rover from traveling over dangerous terrains, but mobility issues have shown that these methods are not always sufficient.

Posted in: Mechanics, Software, Briefs

Read More >>