Spectrum waste
Orbital-speed physics forces operators to leave roughly 30% of their licensed spectrum unused as a mandatory safety buffer. They own it. They pay for it. They cannot monetize it.
Software-defined waveforms for satellite communications
Wasted spectrum,
returned. In software.
Rayphase is a software license for the radios already in orbit. One over-the-air update recovers the licensed spectrum operators cannot use today, holds throughput through weather, and hands power back to the payload. No new hardware. No new launches.
+30%capacity on the same spectrum license
66%weather throughput loss, recovered
30%of the power budget returned to the payload
OTAdeploys as a firmware update to radios already flying
The problem
Operators pay for capacity they cannot use —
and lose revenue every time it rains.
Thousands of new low-orbit satellites are joining the largest infrastructure buildout in the history of the space industry, and the data they carry — driven by AI workloads moving into orbit — is set to grow a hundredfold within five years. The networks they join inherit three structural inefficiencies baked into the physics of legacy radio.
Weather revenue loss
Rain or dense cloud over a ground station throttles data speeds by up to 66% to keep links alive. That means breached SLAs, delayed Earth-observation deliveries, and degraded defense capability — daily, in most markets.
Power drain
Constant onboard signal correction consumes up to 30% of a satellite's electrical budget — power that is not available for the compute, sensors, and throughput that actually generate revenue.
None of these problems are new. Until now, no commercially deployable software solution has existed.
The solution
A software license that converts wasted spectrum into revenue.
Rayphase is not a satellite company. We write software that runs on the programmable radio chips already installed in satellites and ground stations. A 20 Gbps network becomes a 25–30 Gbps network on the same orbital slot, the same frequency license, and the same ground infrastructure.
- The unusable 30% of licensed spectrum becomes usable, immediately
- Weather-driven throttling drops to near zero; higher-tier SLAs become realistic
- Signal-correction power returns to revenue-generating payloads
- Deploys over the air — no recall, no launch, no hardware project
Integration on the ground is comparable to a software driver installation. Adoption costs are orders of magnitude lower than hardware-based alternatives, because the hardware is already flying.
Technology
Peer-reviewed science,
engineered for orbit.
Rayphase is built on the Affine Fourier Transform — a waveform that natively mirrors the geometry of orbital motion instead of correcting distortion after the fact. The mathematics has been formally derived, independently validated, and published in peer-reviewed IEEE literature — co-authored by our CEO. The core algorithm has been computationally modeled at speeds matching real low-orbit trajectories, with independently reproducible results.
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Published
The mathematics
The Affine Fourier Transform result is proven and peer-reviewed — not a hypothesis. The publication is public; the low-complexity implementation that makes it fly is ours.
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In the lab
Hardware validation
Hardware-in-the-loop testbeds with physical radios and channel emulation carry the result from simulation to real signal behavior, on the test standards aerospace procurement expects.
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In orbit
Flight heritage
A live in-orbit demonstration aboard a commercial rideshare mission establishes the flight heritage that fleet-wide deployment requires.
Team
The scientist who derived the mathematics.
The engineer who ships production systems.
Djuro Stojanovic, PhD
Co-Founder, CEO & Chief Scientist
PhD in space telecommunications and co-author of the peer-reviewed IEEE research that provides Rayphase's mathematical foundation. Serial founder — co-founded Uhura Solutions (Techstars Tel Aviv 2018, $2.5M raised) — with deep relationships across the defense DSP and space communications research communities.
Marko Andrijasevic, MSc
Co-Founder & CTO
Director of Engineering at Automattic, running infrastructure behind WordPress.com — 180M+ websites and 20B+ page views a month. MSc in Computer Science with a machine-learning specialization. He owns the path from a simulation result to a certified, deployed aerospace software package.
We make AI data move beyond Earth
We are not building a satellite company.
We are building the layer every satellite company pays to operate.
Operators, integrators, and researchers — we'd like to hear from you.
Investors: we're raising our seed round — reach out at [email protected].