Autonomous
Defence For
Satellites
We build the brain that goes on any satellite — onboard AI that spots a non-cooperative approach, and propulsion that manoeuvres away. Decided in orbit, in seconds.
The brain leads.
The legs follow.
P1S Buddy
The onboard AI engine that makes autonomous decisions and delivers real-time intelligence from orbit — no ground loop. It commands propulsion through a safety-bounded interface: our own thruster, or any third-party thruster a satellite already carries.
Learn more →P1S Plasma
A water-electrolysis pulsed micro-arcjet — the first thruster designed for Buddy's command interface. Non-toxic, launch-safe, and roughly ten times the thrust of electric thrusters in the same 1U volume.
Learn more →A massive market.
Two uncrowded niches.
The window is open in 2026.
Within three years, the number of satellites in orbit will more than double. Space is becoming contested, and no ground team can watch that many satellites or react in time. Satellites will need to defend themselves.
Edge AI is flight-ready
Radiation-tolerant edge compute now runs live AI on orbit. The hardware risk is retired — autonomy is a software problem now.
Propulsion is breaking
Xenon demand outpaces supply and hydrazine is being phased out. Operators need a safe, scalable alternative. Water is it.
Orbit is contested
Adversarial proximity operations are rising and most satellites cannot see or move. The window to solve both is open now.
Notes from the edge of space.
The Long Fall Home: How Satellites Move, Maneuver, and Eventually Die
Speed Is the Budget. Propellant Is the Cash.
Read post →
Lost in Space: How a Satellite Knows Where It Is and Where It’s Pointing
The Complete Guide to Satellite Attitude, Position, and Autonomous Survival
Read post →
From Orbit to Your Screen: How Data Actually Gets Down From Space
From Sputnik's beep to a 25-gigabit laser — the end-to-end story of space-to-ground data.
Read post →Building what comes after launch.
Detect. Classify. Evade — autonomously. The self-defending satellite.
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