41 to 50 of 98 Results
Jun 24, 2018
Branch, Andrew; Flexas, Mar M.; Claus, Brian; Thompson, Andrew F.; Clark, Evan B.; Zhang, Yanwu; Kinsey, James C.; Chien, Steve; Fratantoni, David M.; Hobson, Brett; Kieft, Brian; Chavez, Francisco P., 2018, "Planning and Execution for Front Delineation and Tracking with Multiple Underwater Vehicles", https://hdl.handle.net/2014/48355, International Conference on Automated Planning and Scheduling (ICAPS) 2018, Delft, The Netherlands, June 24 - 29, 2018, JPL Open Repository
This work describes a planning architecture for a heterogeneous fleet of marine assets as well as a method for detecting and tracking ocean fronts using multiple autonomous underwater vehicles. Multiple vehicles — equally-spaced along the expected frontal boundary — complete near... |
Jun 24, 2018
Branch, Andrew; Guangyu, Xu; Jakuba, Michael V.; German, Christopher R.; Chien, Steve; Kinsey, James C.; Bowen, Andrew D.; Hand, Kevin P.; Seewald, Jeffrey S., 2018, "Autonomous Nested Search for Hydrothermal Venting", https://hdl.handle.net/2014/48342, International Conference on Automated Planning and Scheduling (ICAPS) 2018, Delft, The Netherlands, June 24 - 29, 2018, JPL Open Repository
Ocean Worlds in the outer solar system represent one of the best chances for the discovery of extra-terrestrial life. Bodies, such as Europa and Enceladus, are thought to harbor liquid oceans, often encased in a thick icy shell. In order to further investigate these oceans, a new... |
Jun 24, 2018
Shao, Elly; Byon, Amos; Davies, Chris; Davis, Evan; Knight, Russell; Lewellen, Garett; Trowbridge, Michael; Chien, Steve, 2018, "Area Coverage Planning with 3-axis Steerable, 2D Framing Sensors", https://hdl.handle.net/2014/48302, International Conference on Automated Planning and Scheduling (ICAPS) 2018, Delft, The Netherlands, June 24 - 29, 2018, JPL Open Repository
Existing algorithms for Agile Earth Observing Satellites((Lemaitre et al. 2002)) were largely created for 1D line sensors that acquire images in linear swaths. However, imaging satellites increasingly use 2D framing sensors (cameras) that capture discrete rectangular images. We d... |
Jun 24, 2018
Branch, Andrew; Flexas, Mar M.; Claus, Brian; Thompson, Andrew F.; Clark, Evan B.; Zhang, Yanwu; Kinsey, James C.; Chien, Steve; Fratantoni, David M.; Hobson, Brett; Kieft, Brian; Chavez, Francisco P., 2018, "Front Delineation and Tracking with Multiple Underwater Vehicles", https://hdl.handle.net/2014/48341, International Conference on Automated Planning and Scheduling (ICAPS) 2018, Delft, The Netherlands, June 24 - 29, 2018, JPL Open Repository
This work describes a method for detecting and tracking ocean fronts using multiple autonomous underwater vehicles. Multiple vehicles — equally-spaced along the expected frontal boundary — complete near parallel transects orthogonal to the front. Lateral gradients are used to det... |
Jun 4, 2018
Vander Hook, Joshua; Vaquero, Tiago; Troesch, Martina; de la Croix, Jean-Pierre; Schoolcraft, Joshua; Bandyopadhyay, Saptarshi; Chien, Steve, 2018, "Dynamic Shared Computing Resources for Multi-Robot Mars Exploration", https://hdl.handle.net/2014/48190, International Symposium on Artificial Intelligence Robotics and Automation in Space (i-SAIRAS) 2018, Madrid, Spain, June 4 - 6, 2018, JPL Open Repository
The NASA roadmap for 2020 and beyond includes several key technologies which will have a game-changing impact on planetary exploration. The first of these is High Performance Spaceflight Computing (HPSC), which will provide orders of magnitude increases in processing power for next... |
Jun 4, 2018
Schaffer, Steve; Chien, Steve; Ferguson, Eric, 2018, "Validation of Fault-Tolerant Plans for Europa Clipper", https://hdl.handle.net/2014/48265, International Symposium on Artificial Intelligence Robotics and Automation in Space (i-SAIRAS) 2018, Madrid, Spain, June 4 - 6, 2018, JPL Open Repository
The Europa Clipper mission will explore that icy moon in a series of brief flybys through the Jovian radiation belts. A single event upset in the spacecraft flight computer during these critical scientific periods could jeopardize the success of the mission. Rather than safing and aw... |
Aug 19, 2017
Branch, Andrew; Troesch, Martina; Flexas, Mar; Thompson, Andrew; Ferrara, John; Chao, Yi; Chien, Steve, 2017, "Station Keeping with an Autonomous Underwater Glider Using a Predictive Model of Ocean Currents", https://hdl.handle.net/2014/47709, 26th International Joint Conference on Artificial Intelligence IJCAI-17, Melbourne, Australia, August 19-25, 2017, JPL Open Repository
We investigate the use of an autonomous underwater glider as a platform for a virtual mooring. Our approach uses a simple vehicle motion model, a predictive model of ocean currents, and a greedy search algorithm in order to simulate possible actions available to the vehicle and s... |
Aug 19, 2017
Schaffer, Steve; Chien, Steve; Branch, Andrew; Hernandez, Sonia, 2017, "Initial Results of Heuristic Guided Orbit Selection for a Low Frequency Radio Interferometric Spacecraft Constellation", https://hdl.handle.net/2014/47645, 26th International Joint Conference on Artificial Intelligence IJCAI-17, Melbourne, Australia, August 19-25, 2017, JPL Open Repository
A constellation of radio telescope spacecraft can leverage interferometry to accurately image distant objects throughout the universe, but mission design must balance among many interrelated constraints. In particular, the number of craft and the selection of time-varying orbital... |
Sep 4, 2012
Chien, Steve; Mclaren, David; Doubleday, Joshua; Tran, Daniel; Tanpipat, Veerachai; Chitradon, Royol; Boonya-aroonnet, Surajate; Thanapakpawin, Porranee; Mandl, Daniel, 2012, "Integrating high-resolution taskable imagery into a sensorweb for automatic space-based monitoring of flooding in Thailand", https://hdl.handle.net/2014/42587, i-SAIRAS: International Symposium on Artificial Intelligence, Robotics and Automation in Space, Turin, Italy, September 4-6, 2012, JPL Open Repository
Several space-based assets (Terra, Aqua, Earth Observing One) have been integrated into a sensorweb to monitor flooding in Thailand. In this approach, the Moderate Imaging Spectrometer (MODIS) data from Terra and Aqua is used to perform broad-scale monitoring to track flooding at... |
Sep 4, 2012
Chien, Steve; Doubleday, Joshua; Ortega, Kevin; Tran, Daniel; Bellardo, John; Williams, Austin; Piug-Suari, Jordi; Crum, Gary; Flatley, Thomas, 2012, "Onboard autonomy and ground operations automation for the Intelligent Payload Experiment (IPEX) CubeSat Mission", https://hdl.handle.net/2014/42586, i-SAIRAS: International Symposium on Artificial Intelligence, Robotics and Automation in Space, Turin, Italy, September 4-6, 2012, JPL Open Repository
The Intelligent Payload Experiment (IPEX) is a cubesat manifested for launch in October 2013 that will flight validate autonomous operations for onboard instrument processing and product generation for the Intelligent Payload Module (IPM) of the Hyperspectral Infra-red Imager (Hy... |
