Engineering topics

Stough, T.

Publications and source records attributed to Stough, T..

10 records

NASA NTRS2005

Science Alert Demonstration with a Rover Traverse Science Data Analysis System

The Onboard Autonomous Science Investigation System (OASIS) evaluates geologic data gathered by a planetary rover. This analysis is used to prioritize the data for transmission, so that the data with the highest science value is transmitted to Earth. In addition, the onboard analysis results are used to identify science opportunities. A planning and scheduling component of the system enables the rover to take advantage of the identified science opportunity. OASIS is a NASA-funded research project that is currently being tested on the FIDO rover at JPL for the use on future missions.

Castano, R.↗

NASA NTRS2003

Integrated vehicle test bed for IVHM systems on 2nd generation RLV

The IVTB concept is to validate spacecraft system designs and evaluate new technologies; its focus is to identify and resolve problems at the early stages of development and facilitate new technology transfer.

IVTB vehicle health simulation testbed aerospace↗

NASA NTRS2003

Airborne Radar Study of Mars Analogs in the Southwestern United States

The search for surface and near-surface liquid water on Mars is a central part of current and planned future exploration, which include radar sounders on Mars Express and MRO and proposed synthetic aperture radar (SAR) imagers. In order to penetrate sand and dust cover, these systems are proposed for longer wavelengths (e.g, from [2]: 24 cm / L-band and 74 cm / P-band) than those considered optimal for the detection of soil moisture (6 cm / C-band). However, there has been some success in detecting soil moisture at longer wavelengths. Given the size and mass constraints for Mars missions, the optimization of radar instrument parameters for meeting science objectives, such as searching for liquid water, is essential. In this on-going study, we are using repeat coverage of Mars analog sites with multifrequency (C, L and P band) airborne radar and ground truth soil sample data to assess the detectability of soil moisture.

Greeley, R.↗

NASA NTRS2002

The Techsat-21 autonomous space science agent

In this paper we discuss how these AI technologies are synergistically integrated in a hybrid multi-layer control architecture to enable a virtual spacecraft science agent.

autonomy software agents onboard decision-making↗

NASA NTRS2002

Automating Operational and Science Analysis Processes with the Autonomous Sciencecraft Constellation

The Autonomous Sciencecraft Constellation-Techsat 21 mission is a NASA New Millennium Program mission selected for flight in 2004. ASC will autonomously perform science analyses of X-band radar data, while in Earth orbit. Additional information is contained in the original extended abstract.

Davies, A. G.↗

NASA NTRS2001

The Techsat-21 autonomous sciencecraft constellation

This paper talks about the techsat-21 autonomous sciencecraft constellation.

autonomous spacecraft constellation↗

NASA NTRS2001

A demonstration of robust planning, scheduling, and execution for the Techsat-21 autonomous sciencecraft constellation

The paper talks about the planning, scheduling, and execution framework used in ASC (Autonomous Sciencecraft Constellation).

autonomous spacecraft constellation ASC↗

NASA NTRS2001

Onboard science analysis and replanning for increased science return

The Autonomous Sciencecraft Constellation (ASC) experiment, which will fly onboard the Air Force's TechSat-21 constellation, will demonstrate the use of onboard science analysis and replanning to increase science return.

onboard↗

NASA NTRS2001

Automated detection of craters and other geological features

We report on our effort to develop algorithms to detect, size, and classify geological features in planetary and asteroidal data sets.

object recognition data understanding scalability ↗

NASA NTRS2001

Using Scaled Visual Texture for Autonomous Rock Clustering

To maximize the return on future planetary missions, it will be critical that rovers have the capability to analyze information onboard and select and return data that is most likely to yield valuable scientific discoveries. Additional information is contained in the original extended abstract.

Anderson, R. C.↗