Special Coverage

Active Aircraft Pylon Noise Control System
Unmanned Aerial Systems Traffic Management
Method of Bonding Dissimilar Materials
Sonar Inspection Robot System
Applying the Dynamic Inertia Measurement Method to Full-Scale Aerospace Vehicles
Method and Apparatus for Measuring Surface Air Pressure
Fully Premixed, Low-Emission, High-Pressure, Multi-Fuel Burner
Self-Healing Wire Insulation
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Precision Navigation Strategies for Primitive Solar-System-Body Sample Return Missions

Goddard Space Flight Center, Greenbelt, Maryland This project investigated advanced navigation strategies required to approach, perform proximity operations, and return a sample from an asteroid or comet. An optimized navigation strategy for a notional mission to a near-Earth asteroid was developed to serve as a baseline for future missions and mission proposals. Essential simulation and analysis software enhancements were developed and implemented in the Orbit De ter mination Toolbox (ODTBX), an open-source, early mission navigation analysis tool suite built on a flexible architecture. The development efforts of this project resulted in the first fully open-source tool suite with the capabilities of performing primitive body navigation simulation and analyses.

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Orbit Determination Toolbox 2012a (v5.0)

Goddard Space Flight Center, Greenbelt, Maryland The Orbit Determination Toolbox (ODTBX) 2012a (v5.0) is an advanced mission simulation and analysis tool used for concept exploration, proposal, early design phase, or rapid design center environments: the emphasis is on flexibility, but it has enough fidelity to produce credible results. ODTBX v5.0 includes multiple feature additions, enhancements, and bug fixes from the prior release (v4.5). The primary user interface and supporting functions are written in Matlab and Java.

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Design and Construction of Protograph-Based LDPC Codes

This innovation can be used in magnetic tape recording and other channels with finite-state representation. NASA’s Jet Propulsion Laboratory, Pasadena, California Writing (recording) to a storage device and reading from it can be considered as a noisy channel. A storage device such as magnetic recoding and optical recording can be modeled as a partial response channel. Partial-response techniques are a special case of precoding technique where the intersymbol interference is forced to some known pattern. Thus, read-back data from storage devices may have intersymbol interference.

Posted in: Briefs, Electronics & Computers, Information Sciences, Software

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Spitzer Integrated Resource Planning and Scheduling System (SIRPASS)

NASA’s Jet Propulsion Laboratory, Pasadena, California This decision support system provides an integrated platform for assessing the quality of Spitzer scheduling options. The application aids in scheduling instrument selection, assigns schedule times to specific observation requests, and generates stored sequence products destined for execution on the Spitzer Space Telescope.

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Tracking a Scene on Earth from Space Using the Adaptive Cross-Correlation Algorithm

NASA’s Jet Propulsion Laboratory, Pasadena, California A software program enables a user to track a scene or a spot on Earth from space (such as from the ISS) using an innovative algorithm. This robust and highly accurate software allows a scene to be tracked that can be not only the shifted version of a previous scene, but can also be a distorted one.

Posted in: Briefs, TSP, Electronics & Computers, Information Sciences, Software

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Automated Scheduling of Personnel to Staff Operations for the Mars Science Laboratory

NASA’s Jet Propulsion Laboratory, Pasadena, California The task of producing Mars Science Laboratory (MSL) personnel schedules is daunting. Through automation, the labor and number of mistakes made are reduced when compared to the manual process. This software not only allows for common constraints to be expressed, but also for these to be gracefully descoped in case a solution cannot be found, thus making this unique in the personnel scheduling arena.

Posted in: Briefs, TSP, Electronics & Computers, Information Sciences, Software

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Area Coverage Path Planning Using Divided Grid-Graphs

NASA’s Jet Propulsion Laboratory, Pasadena, California Planning area coverage observations is a challenge in an architecture with a framing imager affixed to a bus that can be moved, and a mirror or other device that allows for small, but fast, observation of adjacent areas along the boresight of a telescope. The telescope boresight can slew slowly while the mirror system maintains pointing on a specific field of view. This allows the continuous gathering of data (much like push - broom instruments) without the need to slew or settle. Since the telescope field of view is much larger than the imager field of view, the areas to be imaged can be divided into quarters.

Posted in: Briefs, TSP, Electronics & Computers, Information Sciences, Software

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