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US and Australia Collaborate to Enhance GPS Resilience in Contested Environments
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By Space Force
Australian Department of Defence members joined forces with the Joint Navigation Warfare Center to put GPS devices to the test.
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By NASA
On 5/22/24, Chinmay Deval, the Water Security Lead at the SERVIR Science Coordination Office, moderated a virtual panel for the ResilienceLinks monthly webinar series. ResilienceLinks is the knowledge platform for the US Agency for International Development (USAID) Center for Resilience. The theme for May focused on Water Data and Climate Resilience. The panel featured distinguished water experts from the SERVIR global network, including: Jamilatou Chaibou Begou from the Agrometeorology, Hydrology, and Meteorology Regional Center/SERVIR West Africa, Chinaporn Meechaiya from the Asian Disaster Preparedness Center/SERVIR Southeast Asia, Jim Nelson, Principal Investigator of the SERVIR Applied Sciences Team at Brigham Young University, and Angelica Gutierrez from the National Oceanic and Atmospheric Administration (NOAA) Throughout the webinar, panelists shared their expertise and insights on the use of water data to enhance climate resilience. They discussed real-world applications, challenges in data accessibility, and innovative solutions for integrating local knowledge and gender equity into climate adaptation strategies. The webinar was hosted by Peter Epanchin, Senior Climate Adaptation and Resilience Advisor at USAID’s Bureau for Resilience, Environment, and Food Security.
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By NASA
A collaboration between IMPACT and IBM has produced INDUS, a comprehensive suite of large language models (LLMs) tailored for the domains of Earth science, biological and physical sciences, heliophysics, planetary sciences, and astrophysics and trained using curated scientific corpora drawn from diverse data sources. Kaylin Bugbee (ST11), team lead of NASA’s Science Discovery Engine (SDE), spoke to the benefit INDUS offers to existing applications: “Large language models are rapidly changing the search experience. The Science Discovery Engine, a unified, insightful search interface for all of NASA’s open science data and information, has prototyped integrating INDUS into its search engine. Initial results have shown that INDUS improved the accuracy and relevancy of the returned results.”
The INDUS models are openly available on Hugging Face. For the benefit of the scientific community, the team has released the developed models and will release the benchmark datasets that span named entity recognition for climate change, extractive QA for Earth science, and information retrieval for multiple domains. A paper on INDUS, “INDUS: Effective and Efficient Language Models for Scientific Applications,” is available at https://arxiv.org/pdf/2405.10725.
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By NASA
NASA/Michala Garrison, USGS Landsat 9’s Operational Land Imager-2 captured this image of the open pits and ponds of Telfer Mine and the surrounding rust-colored soil on Dec. 15, 2023. The soils have a reddish tint from the iron oxides that have accumulated from millions of years of weathering. This part of Western Australia is known for being rich in natural resources, including petroleum, iron ore, copper, and certain precious metals. Beneath the soils, veins of gold and silver run through sedimentary rocks, such as quartz sandstone and siltstone, that formed about 600 million years ago, when much of Australia was under water.
Text credit: Emily Cassidy
Image credit: NASA/Michala Garrison, USGS
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By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
An artist’s rendering of NASA’s Gateway space station in lunar orbit, featuring the Power and Propulsion Element (PPE) and Habitation and Logistics Outpost (HALO), left, and a photograph of an antenna undergoing testing in an anechoic chamber at NASA’s Johnson Space Center, right.NASA/Robert Markowitz Engineers at NASA’s Johnson Space Center recently began electric field testing on representative communications hardware for Gateway, humanity’s first space station to orbit the Moon.
An orbiting laboratory for deep space science and a staging ground for lunar exploration, Gateway will help NASA and its international partners establish a sustained human presence on and around the Moon in preparation for the next giant leap – human exploration of Mars.
High-gain antennas are an important component of Gateway’s communication and tracking system that connects operations across the vast distances of the lunar South Pole region, to Gateway in orbit around the Moon, to Earth, and back again.
NASA is conducting rigorous testing on the electric field levels radiated by the antennas to ensure safe and efficient communication and to avoid any interference with Gateway’s crew and equipment. By validating simulation models to accurately predict electric field levels, NASA can establish precise safety zones around the K/Ka-band parabolic reflector antennas to protect astronauts and hardware without sacrificing high-rate communications.
During the meticulous testing process, engineers use electric field and waveguide probes, which measure the strength and quality of electromagnetic signals, to scan the near fields of a representative high-gain antenna. Robotic arms and optical tracking systems provide the precise measurements needed for model validation. The testing is being conducted in an anechoic chamber, a specialized room that provides a controlled environment for measurements of electromagnetic waves.
“We are sharpening our pencil in conducting model validation measurements – ensuring high accuracy in the analysis of electric fields radiated by the high-gain antennas on Gateway,” said Timothy Kennedy, one of the NASA engineers overseeing the tests. “This enables reduced margins on antenna masking needed to protect equipment and crew, while maximizing communication coverage.”
Findings are expected to enhance NASA’s understanding of the electric field levels emitted by Gateway’s antennas and inform critical decisions for operating them safely during Artemis missions, ensuring that Gateway is a safe home for astronauts around the Moon.
A probe held by a robotic arm measures electric field levels emitted by an antenna during a testing session in an anechoic chamber at NASA’s Johnson Space Center. The test results will be used to define boundaries for Gateway’s communication system antennas.NASA/Robert Markowitz A probe held by a robotic arm measures electric field levels emitted by an antenna during a testing session in an anechoic chamber at NASA’s Johnson Space Center. The test results will be used to define boundaries for Gateway’s communication system antennas.NASA/Robert Markowitz A probe held by a robotic arm measures electric field levels emitted by an antenna during a testing session in an anechoic chamber at NASA’s Johnson Space Center. The test results will be used to define boundaries for Gateway’s communication system antennas.NASA/Robert Markowitz A probe held by a robotic arm measures electric field levels emitted by an antenna during a testing session in an anechoic chamber at NASA’s Johnson Space Center. The test results will be used to define boundaries for Gateway’s communication system antennas.NASA/Robert Markowitz Learn More About Gateway Facebook logo @NASAGateway @NASA_Gateway Instagram logo @nasaartemis Share
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Last Updated Jul 29, 2024 EditorBriana R. ZamoraContactBriana R. Zamorabriana.r.zamora@nasa.govLocationJohnson Space Center Related Terms
Gateway Space Station Artemis Earth's Moon Gateway Program Johnson Space Center Explore More
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