John Poole58m ago

Most GNSS survey failures aren’t equipment—they’re poor site selection.

I’m experimenting with using low-cost GNSS receivers (L76K vs u-blox MAX-M10S) to pre-qualify sites before running NOAA OPUS.

~30–90 min logs → PostgreSQL → HDOP, CN0, wander analysis.

Early results show tradeoffs between signal strength and positional stability.

https://salemdata.net/johnpress/?p=628

Anyone exploring similar GNSS site validation?
#GNSS #GPS #Geodesy #ESP32 #PostgreSQL #OpenSource #DataEngineering #Meshtastic

GNSS-Stylist5d ago

Making of MAD Projection (Demo for Instanssi 2026)

https://makertube.net/w/tKuUPBRNWUH4jRCjjQ9NeL

Making of MAD Projection (Demo for Instanssi 2026)

PeerTube
Garrett Speed5d ago

This Ikea parts box has dual frequency Galileo bands

#navigation #gnss #gps #galileo

Ars Technica NewsMar 30
After 16 years and $8 billion, the military's new GPS software still doesn't work https://arstechni.ca/LKqv #globalpositioningsystem #militaryspace #USSpaceForce #navigation #Raytheon #Space #GNSS #GPS #rtx
After 16 years and $8 billion, the military's new GPS software still doesn't work

It's a very stressing program. We are still considering how to ensure we move forward."

Ars Technica
HackadayMar 29

Laser Ranging Makes GPS Satellites More Accurate

https://fed.brid.gy/r/https://hackaday.com/2026/03/29/laser-ranging-makes-gps-satellites-more-accurate/

Laser Ranging Makes GPS Satellites More Accurate

Although GNSS systems like GPS have made pin-pointing locations on Earth’s sphere-approximating surface significantly easier and more precise, it’s always possible to go a bit further. …

Hackaday
Astro Hawk (Ian Kluft) ✅🚀🛰️Mar 29
"Laser Ranging Makes GPS Satellites More Accurate" by @hackaday - Laser retroreflector on newest #GPS satellite is the first of what will be on all upcoming GPS satellites. Similar reflectors left on the Moon by Apollo astronauts allow scientists to measure distance to the Moon to the millimeter. Same use for GPS satellites will reduce error in their estimated trajectory, and improve #positioning, #navigation & #timing #PNT derived from them. https://hackaday.com/2026/03/29/laser-ranging-makes-gps-satellites-more-accurate/ #GNSS #satellite #space
Laser Ranging Makes GPS Satellites More Accurate

Although GNSS systems like GPS have made pin-pointing locations on Earth’s sphere-approximating surface significantly easier and more precise, it’s always possible to go a bit further. …

Hackaday
13Mar 29
Laser Ranging Makes GPS Satellites More Accurate https://hackaday.com/2026/03/29/laser-ranging-makes-gps-satellites-more-accurate/
#Science #Space #Geodesy #Gnss #Gps #Retroreflector
Laser Ranging Makes GPS Satellites More Accurate

Although GNSS systems like GPS have made pin-pointing locations on Earth’s sphere-approximating surface significantly easier and more precise, it’s always possible to go a bit further. …

Hackaday
Show threadRTNMar 29

#RocketLab: "First Dedicated Launch for European Space Agency"
"
The launch, named “Daughter Of The Stars”, lifted off from Rocket Lab Launch Complex 1 in New Zealand on March 28th at 10:14 pm NZT to successfully deliver ESA’s “Celeste” mission to orbit: the first two spacecraft of a satellite navigation demonstration mission in low Earth orbit at 510 km.
"
https://rocketlabcorp.com/updates/rocket-lab-successfully-launches-85th-mission-and-first-dedicated-launch-for-european-space-agency/

28.3.2026

#Celeste #CubeSat #Electon #ESA #GNSS #LEO #LEOPNT #Raumfahrt #rocketry #SpaceFlight #TAS

Rocket Lab Successfully Launches 85th Mission and First Dedicated Launch for European Space Agency | Rocket Lab

Mahia, New Zealand. 28 March 2026 – Rocket Lab Corporation (Nasdaq: RKLB) (“Rocket Lab” or the “Company”), a global leader in launch services and space systems, today successfully completed its first dedicated launch for the European Space Agency (ESA), demonstrating Electron’s key and growing role…

Rocket Lab
Show threadRTNMar 29

#OHB:
"
Bremen/Māhia, 28. März 2026. Heute um 10:14 Uhr deutscher Zeit sind die ersten beiden Satelliten für die neue ESA-Navigationsmission Celeste an Bord einer Electron-Rakete erfolgreich vom Māhia Launch Complex in Neuseeland in den Weltraum gestartet. Bei den beiden Satelliten (IOD-1 und IOD-2, IOD = In-Orbit Demonstrator) handelt es sich um Kleinstsatelliten ..
"
https://www.ohb.de/news/erste-satelliten-der-neuen-esa-navigationsmission-celeste-erfolgreich-gestartet

28.3.2026

#Celeste #CubeSat #Electon #ESA #GNSS #LEO #LEOPNT #Raumfahrt #RocketLab #SpaceFlight #TAS

Erste Satelliten der neuen ESA-Navigationsmission Celeste erfolgreich gestartet

OHB SE
RTNMar 29

#ESA:
"
On 28 March, the European Space Agency (ESA) took a major step forward in strengthening Europe's ambition for more resilient satellite navigation, as the first two satellites of the Celeste in-orbit demonstration mission lifted off from New Zealand aboard Rocket Lab’s Electron. Their mission is to begin testing a complementary low Earth orbit layer for Galileo.
"
https://www.esa.int/Applications/Satellite_navigation/Celeste/Celeste_s_first_satellites_launched_to_explore_LEO-based_satellite_navigation

28.3.2026

#Celeste #CubeSat #Electon #GNSS #LEO #LEOPNT #OHB #Raumfahrt #RocketLab #SpaceFlight #TAS

Celeste’s first satellites launched to explore LEO-based satellite navigation

On 28 March, the European Space Agency (ESA) took a major step forward in strengthening Europe's ambition for more resilient satellite navigation, as the first two satellites of the Celeste in-orbit demonstration mission lifted off from New Zealand aboard Rocket Lab’s Electron. Their mission is to begin testing a complementary low Earth orbit layer for Galileo.