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Processing Time History Data for Display and Analysis

Neil A. Armstrong Flight Research Center, Edwards, California A suite of software tools was developed that enables powerful and efficient processing of time history data. These tools can be used together or independently, offering a variety of capabilities including comparison of time history data files to validate pre-processing activities, conversion from a compressed format to any format suitable for display, and plotting of data from multiple runs and input files using various time-function parameters. Originally developed to process flight test and simulation data, this suite has potential applications for the manufacturing, aerospace, and scientific research industries. These technologies offer a low-cost alternative to expensive, multiple-component data processing and plotting systems.

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Prototype Genomics-Based Keyed-Hash Message Authentication Code Protocol

This is targeted for applications without an available public key infrastructure. Goddard Space Flight Center, Greenbelt, Maryland Cryptography and molecular biology share certain aspects and operations that allow for a set of unified principles to be applied to problems in either venue. A DNA-inspired hash code system is presented that utilizes concepts from molecular biology. It is a keyed-Hash Message Authentication Code (HMAC) capable of being used in secure mobile ad-hoc networks. It is targeted for applications without an available public key infrastructure. Ad-hoc does not mean the users are completely unknown to each other. They could be part of a military unit, police, emergency workers, mobile vendors, or any collection of users in a common geographical area that wish to communicate in a region lacking a PKI (Public Key Infrastructure).

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Station Spacewalk

Ames Research Center, Moffett Field, California The Station Spacewalk game enables players to virtually conduct NASA repair work on the International Space Station, including jobs critical to help power up the space station so it can continue to operate. Players are provided with a limited quantity of oxygen during which they must complete extravehicular activities (EVAs) and return to the airlock before the air supply runs out.

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System Health Monitoring Software Learns System Behavior from Data

The new techniques provide faster response and require less computer memory. Ames Research Center, Moffett Field, California The Inductive Monitoring System (IMS) software tool uses data mining techniques to automatically characterize nominal system operation by analyzing archived system data. These nominal characterizations are then used to perform near-real-time system health monitoring or to analyze archived system data to detect anomalies in system behavior as compared with previous nominal behavior.

Posted in: Briefs, Electronics & Computers, Data Acquisition

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Integrated and Automated Software Test Environment for JPL Software Defined Radio

NASA’s Jet Propulsion Laboratory, Pasadena, California Software has been developed that provides an integrated and automated test environment for the Space Telecommunications Radio System (STRS). This software package is Linux based and provides interactive and scripted control to test the JPL Software Defined Radio (SDR) implementing STRS hardware and software functionality. It also provides error checking and data logging capabilities for system diagnosis. This is a C programming language-based software that uses the host’s serial interfaces, a Ballard Technology, Inc. 1553 bus interface, and Star-Dundee SpaceWire-USB interface to communicate with the JPL SDR to issue test commands, receive telemetry, and transfer files.

Posted in: Briefs, TSP, Electronics & Computers, Data Acquisition

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Time Series Product Tool (TSPT) Version 2.0

Stennis Space Center, Mississippi The Time Series Product Tool (TSPT) is a MATLAB-based software application that computes and displays high-quality vegetation and environmental monitoring indices from high temporal revisit rate Mod erate resolution Imaging Spectroradiometer (MODIS) and other satellite sensors. The original purpose of the TSPT was to fuse MODIS Terra and Aqua products to improve the temporal interpolation and filtering of time series affected by clouds. TSPT provides single-timeframe and multi-temporal change images as time series plots at a selected location, or as temporally processed image videos. The labor involved with manually creating these types and quantities of products is considerable; however, by using the TSPT, this process becomes simplified, efficient, and largely automated. This software tool enables and/or aides in the rapid regional surveillance of crops, forests, and other vegetative surfaces.

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NASA Data Acquisition System (NDAS)

A software application is intended to be adaptable to any propulsion test stand or facility’s data acquisition system. Stennis Space Center, Mississippi The test complexes at John C. Stennis Space Center (SSC) require reliable and accurate data acquisition in order to analyze the results of rocket engine tests. Acquisition systems include high-speed data, low-speed data, event monitoring, and video feeds. In order to obtain accurate data, routine calibrations must be performed on each channel, which can be defined as a single data stream to be collected, including the entire hardware chain from signal acquisition by a transducer to signal conditioning by an amplifier and digitization by an analog-to-digital converter.

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