Spire GNSS-Reflectometry Data Enables Arctic-Wide Sea Ice Mapping
Spire GNSS-Reflectometry Data Enables Arctic-Wide Sea Ice Mapping
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gnss-reflectometrytechnical
GNSS-reflectometry is a remote-sensing technique that uses the signals broadcast by global navigation satellites (like GPS) after they bounce off the ground, water or ice to infer surface conditions such as soil moisture, sea state, snow depth or ice cover. It matters to investors because it offers a low-cost, passive way to gather wide-area environmental and operational data—think of it as listening to an echo to map a landscape—which can improve decision-making for agriculture, shipping, insurance, infrastructure and climate-related risk assessment.
gnss-rtechnical
GNSS-R is a remote-sensing method that uses existing navigation satellite signals (like GPS) after they bounce off the ground, sea, or ice to measure surface conditions. Think of it like listening for an echo to tell you what the surface is like; for investors it matters because it provides low-cost, frequent environmental and location data that can support agriculture yields, shipping safety, weather models, insurance risk assessments and new data-driven services.
radio frequency (rf) sensingtechnical
Radio frequency (RF) sensing uses low-power radio waves to detect, track or measure objects, motion, vital signs or environmental changes without physical contact — think of radar acting like an invisible camera that reads movement and presence through walls or clothing. For investors it signals a way to add new features to products, lower costs or enable recurring services, while also bringing potential regulatory, privacy and competitive risks that can affect revenue and valuation.
altimetry datasetstechnical
Altimetry datasets are collections of measurements that tell how high or low the Earth’s surface or ocean is at many points, usually gathered by satellites or aircraft. Investors care because these records act like a map of changing sea levels, coastal flooding risk, river heights and terrain shifts—information that affects property values, insurance costs, commodity supply chains and infrastructure planning. Think of them as time-stamped elevation snapshots used to quantify physical risk and inform models that drive economic and investment decisions.
ESA-supported research reinforces the complementary role of commercial satellite data alongside government missions
VIENNA, Va.--(BUSINESS WIRE)--
New research supported by the European Space Agency’s (ESA) Third Party Missions programme has generated Arctic-wide sea ice freeboard maps using GNSS-Reflectometry (GNSS-R) data captured by Spire Global, Inc.’s (NYSE: SPIR) (“Spire” or “the Company”) GNSS-Reflectometry (GNSS-R) multipurpose listening constellation.
Led by the Technical University of Munich (DGFI-TUM) and the Norwegian Research Centre, the study leveraged Spire’s grazing-angle GNSS-Reflectometry (GNSS-R) — a radio frequency (RF) sensing technique that analyzes reflected navigation signals — to retrieve sea ice freeboard measurements across an entire winter season. The results show strong alignment with established altimetry datasets, including ESA’s CryoSat mission, validating the complementary role of commercial satellite data alongside government missions.
While GNSS signals have long been used for positioning, this research highlights how reflected signal analysis can extend their value into large-scale Earth observation applications, delivering persistent coverage independent of sunlight or weather conditions.
“Advances in miniaturization, digital signal processing, and machine learning have fundamentally changed what’s possible in RF sensing,” said Theresa Condor, Chief Executive Officer of Spire Global. “Commercial constellations can now deliver persistent, high-quality RF data that complements traditional government systems with greater flexibility and cost efficiency. As environmental monitoring requirements intensify, we’re seeing agencies increasingly integrate commercially sourced RF datasets into operational architectures, reflecting the continued maturation of this market and the growing role of commercial infrastructure in government missions.”
Spire (NYSE: SPIR) is a global provider of satellite data, analytics, and intelligence, offering unique datasets and powerful insights about Earth so that organizations can make decisions with confidence in a rapidly changing world. Spire builds, owns, and operates a fully deployed satellite constellation that observes the Earth in real time using radio frequency technology. The data acquired by Spire’s satellites provides global weather intelligence, ship and plane movements, and spoofing and jamming detection to better predict how their patterns impact economies, global security, business operations and the environment. Spire also offers Space as a Service solutions that empower customers to leverage its established infrastructure to put their business in space. Spire has offices across the U.S., Canada, UK, Luxembourg and Germany. To learn more, visit spire.com.
