GNSS

ESA’s Celeste LEO-PNT in-orbit demonstrator mission features a constellation of 11 satellites plus one spare that will fly in low Earth orbit to test innovative signals across various frequency bands. Its goal is to advance satellite navigation concepts for resilient positioning and timing services. (Credit: D. Ducros, ESA)

April 13, 2026

u-blox explores how Celeste LEO PNT complements GNSS for mass market

By Tracy Cozzens

April 13, 2026

Beyond Gravity delivers key payload components for ESA’s Celeste

By Tracy Cozzens

GMV's Celeste In Orbit Demonstration CubeSat was tested in an anechoic chamber. (Credit: GMV)

April 13, 2026

ESA’s Celeste IOD-1 satellite transmits first navigation signal

By Tracy Cozzens

April 9, 2026

Lockheed Martin secures $105M contract for GPS IIIF operations

By Tracy Cozzens

April 9, 2026

GPS III ground control contract held by RTX could be canceled

By Tracy Cozzens

April 1, 2026

Infleqtion launches quantum timing solution with Safran partnership

By Tracy Cozzens

March 24, 2026

See NASA’s GUARDIAN Catch a Tsunami

By Tracy Cozzens

Credit: Gonzalo Solari/ iStock/Getty Images Plus/Getty Images

March 17, 2026

GNSS, INS and neural networks combine for Arctic navigation

By Tracy Cozzens

The PSLV is moved to the Second Launch Pad at the Satish Dhawan Space Center ahead of the launch of IRNSS 1F in March 2016. (Credit: ISRO)

March 16, 2026

India’s IRNSS-1F satellite fails after atomic clock malfunction

By Tracy Cozzens

March 16, 2026

Ultra-low-noise amplifiers achieve in-orbit milestone on ESA HydroGNSS mission

By Jesse Khalil

u-blox explores how Celeste LEO PNT complements GNSS for mass market

Beyond Gravity delivers key payload components for ESA’s Celeste

ESA’s Celeste IOD-1 satellite transmits first navigation signal

Lockheed Martin secures $105M contract for GPS IIIF operations

GPS III ground control contract held by RTX could be canceled

Infleqtion launches quantum timing solution with Safran partnership

See NASA’s GUARDIAN Catch a Tsunami

GNSS, INS and neural networks combine for Arctic navigation

India’s IRNSS-1F satellite fails after atomic clock malfunction

Ultra-low-noise amplifiers achieve in-orbit milestone on ESA HydroGNSS mission

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