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CENTISPACE-1 S3
Chinese LEO GNSS Augmentation Satellite · Beijing Future Navigation Technology / CETC-29
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CentiSpace-1 S3 solves a problem that sounds like it shouldn't be solvable: broadcasting a navigation signal on the exact same frequency it's simultaneously trying to receive, without the two drowning each other out. Beijing Future Navigation's engineers built a self-interference suppression technique specifically to make this work, letting CentiSpace-1 satellites listen to GPS, BeiDou, and Galileo signals passing overhead while broadcasting their own correction signals on the same shared frequency band — full compatibility with every receiver already in use, no new hardware required. What began as a single 2018 test satellite has since grown into a planned 160-190 satellite constellation, designed to sharpen BeiDou and GPS positioning down toward centimeter-level accuracy from low orbit.
Its orbit
- Orbit
- Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
- Altitude
- 429–436 mi (690–702 km)
- Inclination
- 53.5°
- One orbit
- 98.5 minutes14.6 orbits a day
- NORAD ID
- 53757
- Int’l designator
- 2022-108A
- Launched
- 2022
Orbital elements from CelesTrak, as of 22 Sep 2026.
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