GNSS reflectometry

Credit: Ig0rZh/iStock/Getty Images Plus/Getty Images

April 16, 2026

PlanetiQ awarded $15M US Air Force contract for GNSS-RO weather data

By Tracy Cozzens

Credit: micheldenijs/E+/Getty Images

March 4, 2026

GNSS-reflectometry data unlocks new insights into Arctic sea ice

By Tracy Cozzens

December 2, 2025

ESA’s HydroGNSS satellites launched to scout for water

By Tracy Cozzens

After arriving at the California launch site, the two HydroGNSS satellites were carefully prepared for liftoff. (Photo: ESA}

November 6, 2025

ESA’s HydroGNSS Scout satellites ready for launch

By Tracy Cozzens

November 28, 2022

Inexpensive sensor created to monitor Rhine river levels

By Tracy Cozzens

November 7, 2022

Taiwan to launch GNSS-R weather satellite for typhoon prediction

By Tracy Cozzens

Photo: Falklands Maritime Heritage Trust

April 28, 2022

Seen & Heard: Shackleton’s ship, Beijing underground

By Tracy Cozzens

March 22, 2022

GNSS signals help map sea-surface topography

By GPS World Staff

Source: Thomas A. Stansell, Kenneth W. Hudnut, and Richard G. Keegan

August 16, 2021

Saudi CubeSat to launch in 2022 for ecosystem research

By GPS World Staff

Graphic: Petrovich9/iStock/Getty Images Plus/Getty Images

July 30, 2021

GeoOptics upgrades CICERO constellation to track climate change

By Tracy Cozzens

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