1,691 to 1,700 of 1,769 Results
Jan 17, 2023
Sina Hasheminassab, 2023, "NASA’s Multi-Angle Imager for Aerosols (MAIA) Investigation in Africa: An Integrated Satellite and Surface Monitoring Approach for Mapping Speciated Particulate Matter Air Pollution", https://doi.org/10.48577/jpl.H5WM5L, Follow up Workshop on a Pilot Design for Air Quality in Africa, JPL Open Repository
No abstract available. |
Jan 17, 2023
De La Torre Juarez, Manuel, 2023, "Diurnal and Seasonal Variations of Aerosol Optical Depth Observed by MEDA/TIRS at Jezero Crater, Mars", https://doi.org/10.48577/jpl.F2K8OS, Journal of Geophysical Research: Planets, JPL Open Repository
The two upward-looking Thermal InfraRed Sensor (TIRS) channels from the Mars Environmental Dynamics Analyzer (MEDA) instrument suite on-board the Perseverance rover enable the retrieval of total aerosol optical depth (dust plus water ice cloud) above the rover for all observation... |
Jan 17, 2023
Klaus Havelund, 2023, "A Half Century of Formal Methods", https://doi.org/10.48577/jpl.WPIXZC, https://arxiv.org/, JPL Open Repository
In this '45 Years of Formal Methods' review we first delineate what we mean by method, formal method, computer science, computing science, software engineering, and model-oriented and algebraic methods. Based on this we shall characterise a spectrum from specification-oriented me... |
Jan 17, 2023
Menemenlis, Dimitris, 2023, "Resonant Diurnal Internal Tides in the North Atlantic, Part II: Modeling", https://doi.org/10.48577/jpl.DOJZVD, Geophysical Research Letters, JPL Open Repository
An unconstrained global ocean simulation for 2020 supports past observations of diurnal internal tides by acoustic tomography during the 1991--1992 Acoustic Mid-Ocean Dynamics Experiment (AMODE) in the Western North Atlantic. Explicitly representing the tides, the simulation repr... |
Jan 17, 2023
Bruce Banerdt, 2023, "Mars seismology", https://doi.org/10.48577/jpl.2JHENN, Annual Review of Earth and Planetary Sciences, JPL Open Repository
For the first time, from early 2019 to end of 2022, Mars shallow and deep interior have been explored by seismology with the InSight mission. Thanks to the performances of its seismometers and quality of their robotic installation on the ground, more than 1300 seismic events have... |
Jan 15, 2023
Velez, Dianna, 2023, "DOUBLE ASTEROID REDIRECTION TEST (DART) MISSION: PROCESSING, ANALYSIS, AND MODELING OF THE REACTION CONTROL SYSTEM THRUSTER DELTA-V FOR ORBIT DETERMINATION", https://doi.org/10.48577/jpl.HLXZLF, 33rd AAS/AIAA Space Flight Mechanics Meeting, JPL Open Repository
The Double Asteroid Redirection Test (DART) spacecraft impacted the asteroid (65803) Dimorphos on September 26, 2022. Three axis attitude control was provided exclusively by hydrazine thrusters. The attitude thrusting was nominally balanced over time but unbalanced at times. This... |
Jan 15, 2023
Stefano Campagnola, 2023, "Analysis of DV and eclipse duration for Crank-Over-the-Top and petal rotations in Europa Clipper moon tours", https://doi.org/10.48577/jpl.M1E6TL, 33rd AAS/AIAA Space Flight Mechanics Meeting, JPL Open Repository
Europa Clipper is the NASA’s next flagship mission; while in a Jupiter orbit, it will explore Europa with a moon tour that includes more than 45 Europa flybys. Crank-Over-the-Top and petal rotation are two specific sequences of flybys that mission designers utilize to develop moo... |
Jan 15, 2023
Nicholas Bradley, 2023, "PRE-LAUNCH ELECTRIC PROPULSION ERROR MODELS FOR PSYCHE NAVIGATION", https://doi.org/10.48577/jpl.6AMFHT, 33rd AAS/AIAA Space Flight Mechanics Meeting, JPL Open Repository
The Psyche mission is planned to travel to the main belt asteroid (16) Psyche, and will use Hall Effect thrusters for all deterministic thrusting. We present a substantive update to the navigation uncertainty model for the mission’s electric propulsion thrusting, greatly refining... |
Jan 15, 2023
Declan Mages, 2023, "Interstellar Object Uncertainty Evolution and Effect on Fast Flyby Delivery and Required Delta-V", https://doi.org/10.48577/jpl.G3SC3X, 33rd AAS/AIAA Space Flight Mechanics Meeting, JPL Open Repository
Interstellar objects (ISOs) are small bodies that travel through our solar system from other star systems. Their presence in our solar system provides an opportunity to study the properties and origins of these objects, as well as the potential for cross-pollination of material b... |
Jan 15, 2023
Rush, Brian P, 2023, "Optical Navigation for the DARŢ Mission", https://doi.org/10.48577/jpl.UPERPU, 33rd AAS/AIAA Space Flight Mechanics Meeting, JPL Open Repository
The DART mission launched on November 24th, 2021. The goal of this technology demonstration mission was to test orbital deflection through kinetic impact as a method of defense against potential asteroid or comet hazards. DART successfully impacted the 180-meter-diameter asteroid... |
