<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Arcfield]]></title><description><![CDATA[Orion]]></description><link>https://orion.arcfield.com/knowledgexchange</link><generator>RSS for Node</generator><lastBuildDate>Tue, 23 Jun 2026 19:26:24 GMT</lastBuildDate><atom:link href="https://orion.arcfield.com/blog-feed.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[TRIDENT: Advancing ionospheric disturbance detection with next-gen HF sounders ]]></title><description><![CDATA[Ian Collett, Ionospheric Scientist  Understanding Earth’s ionosphere and how it responds to natural and human-induced phenomena has become increasingly critical in today’s interconnected world.  Among the most significant phenomena are traveling ionospheric disturbances (TIDs). Gravity waves triggered by earthquakes, thunderstorms and rocket launches contribute to these disturbances. As they ripple through the ionosphere with varying intensity, they wreak havoc on communications...]]></description><link>https://orion.arcfield.com/post/trident-advancing-ionospheric-disturbance-detection-with-next-gen-hf-sounders</link><guid isPermaLink="false">6a3a80aba30545020ad68d43</guid><pubDate>Tue, 23 Jun 2026 12:52:08 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_bbc85df08fba4457a15754b10cf11b2b~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Ian Collett</dc:creator></item><item><title><![CDATA[Unveiling the hidden connection between Earth and sky: How natural and human-made events affect the ionosphere  ]]></title><description><![CDATA[Austin Egert, Director of Atmospheric Physics    When we think about the ionosphere—a critical layer of Earth’s atmosphere that includes the thermosphere and parts of the mesosphere and exosphere—we tend to focus on impacts from the Sun. Solar flares and geomagnetic storms are well-known triggers for ionospheric disruptions. But what if some of the most profound changes in the ionosphere originate here on Earth? Earthquakes, tornadoes, volcanic eruptions, hurricanes and even human activities...]]></description><link>https://orion.arcfield.com/post/unveiling-the-hidden-connection-between-earth-and-sky-how-natural-and-human-made-events-affect-the</link><guid isPermaLink="false">69d3c989d36a85c300c0c6f9</guid><pubDate>Mon, 06 Apr 2026 15:00:06 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_47e4e2c677c84134ae4362a255ab407e~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Austin Egert</dc:creator></item><item><title><![CDATA[Strategic stargazing: Revolutionizing how we position instruments to study Earth's polar atmosphere ]]></title><description><![CDATA[Matthew Cooper, Ph.D., Aerospace Engineer   When looking up at the night sky, most of us see stars and constellations. At Orion, we see features invisible to the naked eye—features which provide crucial data to our evolving understanding of Earth's polar upper atmosphere. The Earth's polar atmosphere is a beautiful, chaotic mess of slow-moving neutral and charged particles combined with insanely fast-moving ions traveling along the Earth's magnetic field. The super-speed particles come from...]]></description><link>https://orion.arcfield.com/post/strategic-stargazing-revolutionizing-how-we-position-instruments-to-study-earth-s-polar-atmosphere</link><guid isPermaLink="false">69c13b2fb9d5370ce32371cd</guid><pubDate>Mon, 23 Mar 2026 13:15:32 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_3b0c3d359b8c4bf9b8ce43634ca1f374~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Matthew Cooper</dc:creator></item><item><title><![CDATA[Evaluating GeoOptics Radio Occultation Data for Ionospheric Research ]]></title><description><![CDATA[Camella Nasr, Ionospheric Scientist   Image furnished by NASA The monitoring and understanding of Earth’s ionosphere—a critical region for communication, navigation systems and space weather—rely on innovative data sources and methods. NASA's Commercial Smallsat Data Acquisition (CSDA) program was created to tap into the growing commercial satellite industry. Orion Space Solutions serves as one of NASA's expert evaluators, helping determine if commercially available satellite data meets...]]></description><link>https://orion.arcfield.com/post/evaluating-geooptics-radio-occultation-data-for-ionospheric-research</link><guid isPermaLink="false">691605b097f0a2cd7d71f1c8</guid><pubDate>Thu, 13 Nov 2025 16:31:35 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_eb661a2e2fb445a8aef02cb7e1a23d2e~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Camella Nasr</dc:creator></item><item><title><![CDATA[Using Satellite Drag to Understand the Thermosphere ]]></title><description><![CDATA[John Noto, Chief Scientist and Jeff Steward, Director of Scientific Research  The thermosphere, a region of Earth’s upper atmosphere, is constantly in motion, driven by complex processes such as solar forcing, tides, plasma convection and Joule heating. Neutral winds in the thermosphere, which are crucial for understanding atmospheric dynamics, have historically been measured by ground-based instruments like Fabry-Perot interferometers. These tools, in use since 1966, rely on airglow and...]]></description><link>https://orion.arcfield.com/post/using-satellite-drag-to-understand-the-thermosphere</link><guid isPermaLink="false">6903c3b720b7c87bc086bb4c</guid><pubDate>Thu, 30 Oct 2025 20:03:13 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_aeab7e2d30f541b2a118f34c582c6693~mv2.png/v1/fit/w_1000,h_549,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Jeff Steward</dc:creator></item><item><title><![CDATA[How the Madden-Julian Oscillation Shapes the Upper Atmosphere ]]></title><description><![CDATA[Federico Gasperini, Research Scientist  In recent years, scientific discoveries have revealed intriguing connections between Earth’s...]]></description><link>https://orion.arcfield.com/post/how-the-madden-julian-oscillation-shapes-the-upper-atmosphere</link><guid isPermaLink="false">68d2be9ac05123d390d0b54a</guid><pubDate>Tue, 23 Sep 2025 15:40:36 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_d80b65dd3edd4dffadf9bce4f7d0a7a4~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Federico Gasperini</dc:creator></item><item><title><![CDATA[Unraveling the Ripples in the Sky: How Rocket Launches Disturb the Ionosphere ]]></title><description><![CDATA[Scott Thaller, Research Scientist  Rocket launches are known to unleash spectacular forces, propelling engineering marvels into space...]]></description><link>https://orion.arcfield.com/post/unraveling-the-ripples-in-the-sky-how-rocket-launches-disturb-the-ionosphere</link><guid isPermaLink="false">68c04eb3ccaa65e2efcfc24d</guid><pubDate>Tue, 09 Sep 2025 16:03:25 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_71d99a68f58f47b8b5d0e7c3a61adf74~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Scott Thaller</dc:creator></item><item><title><![CDATA[STEPHEI: Revolutionizing Space Plasma Measurements with CubeSat Instrumentation ]]></title><description><![CDATA[Scott Thaller, Research Scientist   The invisible forces propelling particles through space, energizing plasma and generating waves in...]]></description><link>https://orion.arcfield.com/post/stephei-revolutionizing-space-plasma-measurements-with-cubesat-instrumentation</link><guid isPermaLink="false">68b0679ea7acf6efd300d8f2</guid><pubDate>Thu, 28 Aug 2025 14:32:26 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_21b5e2e0064745b5b611d8a0dc9100f3~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Scott Thaller</dc:creator></item><item><title><![CDATA[Bridging The “Last Mile” of Data Access: How Digital Twin Technology Could Help Enable NOAA’s Mission in Revolutionary Ways ]]></title><description><![CDATA[Jeff Steward, Ph. D. When a user wants to access data from the National Oceanic and Atmospheric Administration (NOAA), there is usually a...]]></description><link>https://orion.arcfield.com/post/bridging-the-last-mile-of-data-access-how-digital-twin-technology-could-help-enable-noaa-s-missio</link><guid isPermaLink="false">6850460f0daa1dfa62f8d722</guid><pubDate>Mon, 16 Jun 2025 16:39:34 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_1161608a7482400c975b86a325f1829f~mv2.png/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Jeff Steward</dc:creator></item><item><title><![CDATA[Plasma Irregularities at the Equator (PIE) Mission Concept ]]></title><description><![CDATA[Anastasia Newheart, Research Scientist At Orion, we are constantly exploring new frontiers to advance our understanding of Earth's upper...]]></description><link>https://orion.arcfield.com/post/plasma-irregularities-at-the-equator-pie-mission-concept</link><guid isPermaLink="false">68372ea39932f8646b4afa5a</guid><pubDate>Wed, 28 May 2025 15:49:52 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_ec6fce426ef0452495914a905090301b~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Anastasia Newheart</dc:creator></item><item><title><![CDATA[Unlocking the Potential of Oblique Ionograms for Ionospheric Modeling ]]></title><description><![CDATA[Camella Nasr, Research Scientist Scientists are always looking for better ways to model the ionosphere, the upper layer of Earth’s atmosphere that affects radio signals. One promising but underutilized tool is the Oblique Ionogram (OI) , which measures how long high-frequency (HF) radio waves take to travel between a transmitter and a receiver that are far apart. Unlike Vertical Ionograms (VIs) —which measure signals traveling straight up and down—OIs are more complex because HF waves take...]]></description><link>https://orion.arcfield.com/post/unlocking-the-potential-of-oblique-ionograms-for-ionospheric-modeling</link><guid isPermaLink="false">67d06c5b6e313c4d4262bb78</guid><pubDate>Tue, 11 Mar 2025 17:11:35 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_ced74d5be99041ffb2c022a12688f887~mv2.png/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Camella Nasr</dc:creator></item><item><title><![CDATA[Can We Detect Space Debris Using Disturbances in the (Electromotive) Force? ]]></title><description><![CDATA[Joseph Hughes, Research Scientist Space debris presents a growing challenge for satellite missions, and even small pieces of debris pose significant risks to operational spacecraft. However, tracking these small objects, particularly those smaller than 10 cm, has proven difficult. At Orion, we are exploring innovative methods to tackle this issue, focusing on disturbances in the very low frequency (VLF) electric field as a potential solution through our Space Debris Identification and...]]></description><link>https://orion.arcfield.com/post/can-we-detect-space-debris-using-disturbances-in-the-electromotive-force</link><guid isPermaLink="false">6765b8e3fb4aadc1913946fb</guid><pubDate>Wed, 22 Jan 2025 05:00:00 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/314c00_0d89224f590a4238931912a67067a0ab~mv2.png/v1/fit/w_1000,h_665,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>Joseph Hughes</dc:creator></item></channel></rss>