21 to 30 of 301 Results
Sep 20, 2021
Sparks, Lawrence; Altshuler, Eric, 2021, "The spatial distribution of ionospheric threats to WAAS integrity, 2000 – 2019: a systematic analysis", https://hdl.handle.net/2014/55944, ION GNSS+ 2021, St Louis, Missouri, September 20-24, 2021, JPL Open Repository
The United States’ Wide Area Augmentation System (WAAS) broadcasts data to facilitate aircraft navigation. This paper examines the spatial dependence of ionospheric disturbances that have threatened the accuracy and reliability of position estimates derived from these data over t... |
Sep 20, 2021
Clark, Evan Block; Branch, Andrew; Castano, Rebecca; Fenty, Ian; Gebara, Christine; Kourchians, Ara; Limonadi, Daniel; Madhok, Gauri; McGarey, Patrick; Mechentel, Flora; Nguyen, Kelly; Okamoto, Tyler; Rignot, Eric; Rossi, Federico; Santos, Brendan; Schachter, Justin; Schodlok, Michael; Schoelen, Dane; Stanton, Timothy; Vander Hook, Joshua; Wolsieffer, Ben; Zapien, Xavier, 2021, "IceNode: A Buoyant Vehicle for Acquiring Well-Distributed, Long-Duration Melt Rate Measurements Under Ice Shelves", https://hdl.handle.net/2014/55211, OCEANS 2021, San Diego, California, September 20-23, 2021, JPL Open Repository
Antarctic ice shelves buttress the Antarctic Ice Sheet from sliding into the ocean and significantly raising global sea level. However, the accelerating dynamics of ice shelf melt in a warming environment are poorly understood, and the collapse of Antarctic ice shelves remains on... |
Sep 20, 2021
Schoelen, Dane; Clar, Evan B.; Mechentel, Flora; Gebara, Christine, 2021, "System Analysis and Generative Design for Icenode, a Buoyant Vehicle for Measuring Melt Rate Under Ice Shelves", https://hdl.handle.net/2014/55204, OCEANS 2021, San Diego, California, September 20-23, 2021, JPL Open Repository
Antarctic ice shelves buttress the Antarctic Ice Sheet from sliding into the ocean, and their collapse could trigger a meter or more of global sea level rise by the end of the century. Current state-of-the-art predictions for ice shelf behavior in a warming climate have large unc... |
Sep 13, 2021
Gunapala, Sarath; Ting, David; Rafol, Sir; Soibel, Alexander; Khoshaklagh, Arezou; Keo, Sam; Pepper, Brian; Fisher, Anita; Hill, Cory; Wenger, Tobias; Pagano, Thomas, 2021, "Digital Mid-Wavelength and Long-Wavelength Infrared Focal Planes for SmallSat Applications", https://hdl.handle.net/2014/55921, SPIE Remote Sensing 2021 (Virtual / In-Person Hybrid), Madrid, Spain, September 13-16, 2021, JPL Open Repository
In this presentation, we will report our recent efforts in achieving high performance in Antimonides type-II superlattice (T2SL) based infrared photodetectors using the barrier infrared detector (BIRD) architecture. The high operating temperature (HOT) BIRD focal plane arrays (FP... |
Sep 13, 2021
Van Harten, Gerard; Davis, Ab; Diner, David; Bailey, Taryn; Brageot, Emily; Bruegge, Carol; Hancock, Bruce; Hutchinson, Leina; Manatt, Kenneth; Patel, Saagar; Pearson, John; Rheingans, Brian; Sandhu, Jagmit; Shelton, Jacob; Steffy, Amanda; Warner, Daniel; Werne, Thomas, 2021, "Polarimetric calibration of the Multi-Angle Imager for Aerosols (MAIA)", https://hdl.handle.net/2014/55923, SPIE Remote Sensing 2021 (Virtual / In-Person Hybrid), Madrid, Spain, September 13-16, 2021, JPL Open Repository
NASA’s Multi-Angle Imager for Aerosols (MAIA) mission, under development at the Jet Propulsion Laboratory, is designed to study the adverse health effects of different types of particulate air pollution. Planned for launch in 2023 for a 3-year mission, the MAIA satellite instrume... |
Sep 12, 2021
Mohamed, Mohamed Sabry; Forouhar, Siamak, 2021, "β-BBO-on-Insulator Waveguide Design for Deep-Ultraviolet Generation", https://hdl.handle.net/2014/55251, ECOC 2021, Bordeaux, France, September 12-16, 2021, JPL Open Repository
We present a rib waveguide design in β-barium borate-on-insulator platform for coherent deep-ultraviolet generation down to a wavelength of 230 nm via nonlinear frequency conversion. |
Aug 29, 2021
Mariani, Giacomo; Penanen, Konstantin; Chong, Yong; Braun, David; Farrington, Allen; Korngut, Phil; Bock, James, 2021, "Infrared Focal Plane Assemblies for an All-Sky Spectral Survey", https://hdl.handle.net/2014/55097, 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2021) (Virtual/In-Person Hybrid), Chengdu, China, August 29 - September 3, 2021, JPL Open Repository
This work presents three large-format 2048 x 2048 pixel arrays integrated into passively cooled assemblies able to image in the short and medium-wave infrared range. Continuous spectral selectivity is achieved by means of linear variable filters mounted above the detector arrays. |
Aug 28, 2021
Lazio, Joseph, 2021, "Exoplanets and Radio Astronomy Beyond Earth", https://hdl.handle.net/2014/53289, International Union of Radio Science General Assembly & Science Symposium (URSI GASS) 2021, Rome, Italy, August 28 - September 4, 2021, JPL Open Repository
Jupiter’s radio emission has been linked to its planetary- scale magnetic field, and spacecraft investigations have re- vealed that most planets, and some moons, have or had a global magnetic field. Generated by internal dynamos, magnetic fields are one of the few remote sensing... |
Aug 28, 2021
Buccino, Dustin; Parisi, Marzia; Yang, Oscar; Kahan, Daniel; Feldman, Michael; Oudrhiri, Kamal, 2021, "Calibration and Performance of Juno Radio Science Data", https://hdl.handle.net/2014/53312, International Union of Radio Science General Assembly & Science Symposium (URSI GASS) 2021, Rome, Italy, August 28 - September 4, 2021, JPL Open Repository
Juno Radio Science measures the frequency of X- and Ka-band radio links between the Juno spacecraft and the Earth-based observing stations of NASA’s Deep Space Network (DSN) in order to determine the gravitational field of Jupiter. The received frequency contains information on t... |
Aug 28, 2021
Virkler, Kristen M; Soriano, Melissa; Pineda, Jorge L.; Kocz, Jonathon; Horiuchi, Shinji; McNichols, Tyrone; Bradford, Brian, 2021, "DSN Radio Astronomy Spectrometer", https://hdl.handle.net/2014/54277, International Union of Radio Science General Assembly & Science Symposium (URSI GASS) 2021, Rome, Italy, August 28 - September 4, 2021, JPL Open Repository
The Deep Space Network (DSN) enables NASA to communicate with its deep space spacecraft. By virtue of its large antennas, the DSN can be used as a powerful instrument for radio astronomy. In particular, Deep Space Station (DSS) 43, the 70 m antenna at the Canberra Deep Space Comm... |
