21 to 30 of 364 Results
Oct 23, 2022
Yahnker, Chris R, 2022, "Resonant pneumatic tactile sensing for soft grippers", https://doi.org/10.48577/jpl.1SIJXX, IROS 2022, JPL Open Repository
Soft robots capable of dexterous manipulation can enable the exploration of extreme environments. Equipping these robots with tactile sensing is a challenge, as sensors must be flexible, stretchable, and robust to environmental conditions. We present a tactile sensor design with... |
Oct 22, 2022
Havelund, Klaus, 2022, "Specification-based Monitoring in C++", https://doi.org/10.48577/jpl.BJBXKY, ISoLA 2022 - 11th International Symposium On Leveraging Applications of Formal Methods, Verification and Validation, JPL Open Repository
Software systems cannot in general be assumed proven correct before deployment. Testing is still the most common approach to demonstrate a satisfactory level of correctness. However, some errors will survive verification efforts, and it is therefore reasonable to monitor a system... |
Oct 18, 2022
Berner, Jeff B, 2022, "NASA's Evolving Ka-Band Network Capabilities to Meet Mission Demand", https://doi.org/10.48577/jpl.PM1KRP, 27th Ka and Broadband Communications Conference (Ka) and the 39th International Communications Satellite Systems Conference (ICSSC) and its Colloquium, JPL Open Repository
Space missions are increasingly demanding higher data rates to support the growth in informationintensive mission operations. This growth is reflected in planned and operational missions from low Earth orbit, such as the upcoming NASA-Indian Space Research Organization (ISRO) Syn... |
Oct 17, 2022
Nga Chung, 2022, "Development of a Cloud-based Data Match-Up Service (CDMS) in Support of Ocean Science Applications", https://doi.org/10.48577/jpl.N9U75V, OCEANS 2022 Hampton Roads (Hybrid), JPL Open Repository
There is a need in the oceanographic community for a generalized data collocation capability for satellite and/or in-situ observations that is publicly accessible and provides flexibility and reproducibility for use cases ranging from open science to satellite retrieval calibrati... |
Oct 17, 2022
Christopher Jacobs, 2022, "The K-Band (24 GHz) Celestial Reference Frame Determined from Very Long Baseline Interferometry Sessions Conducted Over the Past 20 Years", https://doi.org/10.48577/jpl.QL2NXP, IAG International Symposium on Reference Frames for Applications in Geosciences (REFAG 2022), JPL Open Repository
The third realization of the International Celestial Reference Frame (ICRF3) was adopted in August 2018 and includes positions of extragalactic objects at three frequencies: 8.4 GHz, 24 GHz, and 32 GHz. In this paper, we present an update of the celestial reference frame estimate... |
Oct 16, 2022
Ryan Watkins, 2022, "3D Printed Submillimeter Reflectors: a New Design and Manufacturing Methodology", https://doi.org/10.48577/jpl.XW3D9T, 32nd International Symposium on Space Terahertz Technology, JPL Open Repository
Submillimeter wavelength (1mm > λ > 0.1mm) reflectors are being utilized to an increasing degree in NASA missions due to their ability to observe phenomena in disciplines ranging from climatology to astrophysics. Due to the inherent form factor of reflectors and the need for stif... |
Oct 16, 2022
Abhinandan Jain, 2022, "Hybrid Dynamics for Closed-Loop Multibody Systems", https://doi.org/10.48577/jpl.GJYQRD, The 6 th Joint International Conference on Multibody System Dynamics, JPL Open Repository
A popular method for solving the dynamics of closed-loop systems is the tree-augmented (TA) dynamics al-gorithm. In this method, a minimal set of the inter-body constraints are “cut” to convert the system into a tree-topology system. The inter-body constraints within the tree are... |
Oct 10, 2022
Declan Mages, 2022, "CORRECTING FOR ROLLING SHUTTER DISTORTION IN DART OPTICAL NAVIGATION IMAGERY", https://doi.org/10.48577/jpl.dvqpzxtp, 3rd Space Imaging Workshop, JPL Open Repository
A key process in optical navigation (opnav) is the use of observed star centers, combined with a known camera model, to derive the pointing of a given picture1. This process typically produces attitude accuracies on the order of a tenth or hundredths of a pixel. However, as CMOS... |
Oct 6, 2022
Thomas Huang, 2022, "DDDAS2022: An Earth System Digital Twin for Air Quality Analysis", https://doi.org/10.48577/jpl.QSCT2A, Dynamic Data Driven Applications Systems 20222 (DDDAS2022) Conference, JPL Open Repository
Severe drought and wildfires have become grim indicators of the severity of the weather and climate extremes our planet is increasingly facing. The lat-est Intergovernmental Panel on Climate Change (IPCC) report describes the unprecedented rate at which the global climate has war... |
Oct 5, 2022
Kelley Case, 2022, "Challenges of Returning to Concurrent Engineering (CE) in a Hybrid Work Mode Post-COVID", https://doi.org/10.48577/jpl.kznypskc, 10th International European Space Agency Conference on Systems & Concurrent Engineering for Space Applications (SECESA), JPL Open Repository
Concurrent Engineering (CE) has been defined as “diverse specialists working in real-time, in the same place, with shared data, to yield an integrated design.” In the mid- to late- 1990’s Concurrent Engineering transformed how we formulated space mission concepts, within NASA, ES... |
