21 to 30 of 815 Results
May 11, 2022
Lytal, Paul D.; Waldman, Jeff; Waters, Kyle C., 2022, "SWOT and NISAR Boom Ground Deployment Test Challenges & Resolution", https://hdl.handle.net/2014/56157, 46th Aerospace Mechanisms Symposium, Houston, Texas, May 11-13, 2022, JPL Open Repository
NASA’s Jet Propulsion Laboratory is developing two new spacecraft that use radar instruments to characterize temporal changes in the Earth’s surface with unprecedented precision (Figure 1). Both the Surface Water Ocean Topography (SWOT) and the NASA-ISRO Synthetic Aperture Radar... |
May 11, 2022
Warrick, Leigh; Mechentel, Flora S.; Oh, Sehyun; Underhill, Micheal, 2022, "Radial Loading of Hydrodynamic Bearings Due to Magnetic Variation", https://hdl.handle.net/2014/56141, 46th Aerospace Mechanisms Symposium, Houston, Texas, May 11-13, 2022, JPL Open Repository
Anomalies during integration of a small-scale hydrodynamic pump motor prompted an investigation into all sources of radial loading on the bearings, and revealed that overall loads were insufficiently characterized. Experimental measurements demonstrated that magnetic forces in th... |
May 9, 2022
Chien, Steve; Parjan, Shreya; Harrod, Ryan, 2022, "Distributed Observation Allocation for a Large-Scale Constellation", https://hdl.handle.net/2014/56156, The 13th Workshop on Optimization and Learning in Multiagent Systems, Auckland, New Zealand, May 9-10, 2022, JPL Open Repository
Increased space and ground sensing is enabling dramatic new measurements of a wide range of Earth Science and Applied Earth Science phenomena, including: volcanism, flooding, wildfires, and weather. Large scale observations constellations of hundreds of assets already exist (e.g.... |
May 8, 2022
Phan, Brian; Wood, Eric; Herman, Jennifer; Patel, Jagdish; Caillat, Thierry; Pinkowski, Stanley, 2022, "MSL MMRTG Power Modeling for Lifetime Performance Predictions", https://hdl.handle.net/2014/56135, Nuclear Emerging Technologies for Space 2022 (NETS 2022), Cleveland, Ohio, May 8-12, 2022, JPL Open Repository
The Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) has been providing power to the Mars Science Laboratory (MSL) rover, Curiosity, for surface operations since 2012. The Jet Propulsion Laboratory (JPL) has employed the Life Performance Prediction Model (LPPM) to gene... |
Apr 25, 2022
Man, Kin F., 2022, "The SWOT Mission Environmental Verification Program", https://hdl.handle.net/2014/56119, ASCE Earth and Space 2022 Conference – Engineering for Extreme Environments, Denver, Colorado, April 25-28, 2022, JPL Open Repository
The objective of the Surface Water and Ocean Topography (SWOT) Mission is to make global measurements of sea surface and terrestrial water heights. The SWOT Observatory consists of the Spacecraft Bus, supplied by CNES, and the Payload Module, provided by JPL. The Spacecraft Bus i... |
Apr 25, 2022
Mercer, Carolyn R.; Stephan, Ryan A.; Voytek, Mary A.; Niebur, Curt; Paganini, Lucas; Schulte, Mitchell D.; Nguyen, Quang-Viet; Dalal, K. Michael; Nayar, Hari D, 2022, "NASA Science Technology Development Programs for Ocean Worlds Exploration", https://hdl.handle.net/2014/55077, ASCE 2020 Earth and Space Conference, Denver, Colorado, April 25-28, 2022, JPL Open Repository
The exploration of ocean worlds such as Europa and Enceladus supports NASA’s goal to search for life and potentially habitable regions elsewhere in the universe, and further promises to help us understand the origins, evolution, and limits of life on Earth. Over the past several... |
Apr 4, 2022
Lu, Thomas; Yun, Kyongsik; Huyen, Alexander; Chow, Edward, 2022, "TruePAL – An AI Assistant for First Responder Safety", https://hdl.handle.net/2014/56164, SPIE Pattern Recognition and Tracking, Orlando, Florida, April 4-8, 2022, JPL Open Repository
This paper presents the development of an AI assistant, Trusted and Explainable Artificial Intelligence for Saving Lives (TruePAL), to provide real-time warning of risks of potential crashes to the first responders. The TruePAL system employs an AI and deep learning technology fo... |
Apr 3, 2022
Punjiya, Meera; Ryu, Kevin; Aull, Brian; Gregory, Matt; McIntosh, K. Alexander; Donlon, Kevan; Brattain, Mike; Pretorius, Herman; Nothern, Denis; Karolyshyn, Thomas; Mihallari, Jorgo; Kranefeld, Zach; Duerr, Erik; Katake, Anup; San Martin, Alejandro Miguel, 2022, "A Direct Detection LiDAR Detector for the Europa Lander Concept", https://hdl.handle.net/2014/56132, SPIE Defense + Commercial Sensing 2022, Orlando, Florida, April 3-7, 2022, JPL Open Repository
NASA's Jet Propulsion Laboratory is developing a Europa Lander astrobiology mission concept to search for biosignatures within Europa’s subsurface. However, Europa’s rugged terrain presents a number of physical hazards for landing. MIT Lincoln Laboratory is designing a radiation-... |
Apr 3, 2022
Ting, David Z.; Fisher, Anita M.; Pepper, Brian J.; Hill, Cory J.; Keo, Sam A.; Khoshakhlagh, Arezou; Soibel, Alexander; Rafol, Sir B.; Maruyama, Yuki; Gunapala, Sarath D.; Pagano, Thomas S., 2022, "Progress in InAs/InAsSb Superlattice Barrier Infrared Detectors", https://hdl.handle.net/2014/56139, SPIE DCS Conference 2022, Orlando, Florida, April 3-7, 2022, JPL Open Repository
The InAs/InAsSb (Gallium-free) type-II strained-layer superlattice (T2SLS) has emerged in recent years as a viable infrared detector material. In particular, mid-wavelength InAs/InAsSb T2SLS focal plane array (FPA) based on the nBn detector architecture exhibits good operating ch... |
Apr 3, 2022
Yun, Kyongsik; Lu, Thomas; Huyen, Alexander; Hammer, Patrick; Wang, Pei, 2022, "Neurosymbolic Hybrid Approach to Driver Collision Warning", https://hdl.handle.net/2014/56165, SPIE Defense + Commercial Sensing 2022, Orlando, Florida, April 3-7, 2022, JPL Open Repository
There are two main algorithmic approaches to autonomous driving systems: (1) An end-to-end system in which a single deep neural network learns to map sensory input directly into appropriate warning and driving responses. (2) A mediated hybrid recognition system in which a system... |
