GalaxEye Has Won A US Patent For OptoSAR, Months After Losing The Satellite That Proved It

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GalaxEye has been granted a United States patent for the core technology behind its OptoSAR imaging system, the Bengaluru company announced on Tuesday.

The patent covers the architecture and system that synchronise optical and microwave sensors so both capture the same location at the same moment, with the resulting data aligned spatially and temporally. The same foundational technology was already patented in India.

The company describes it as the first US patent granted to an Indian startup specifically for satellite imaging technology. That is narrower than the version circulating online, which has rendered it as the first US patent granted to an Indian startup of any kind.

Optical and synthetic aperture radar sensors have conventionally operated independently, with their outputs combined afterwards in post-processing, a step that introduces gaps, mismatches and delay. Optical sensors deliver high-resolution imagery in daylight and clear conditions. SAR uses radar pulses and works through cloud and darkness. Fusing the two at the system level rather than after the fact is what the patent protects.

GalaxEye was founded in 2021 by five IIT Madras alumni, Suyash Singh, Denil Chawda, Kishan Thakkar, Pranit Mehta and Rakshit Bhatt, who had previously worked together on the institute's entry to a global hyperloop competition. It was incubated at the IIT Madras Incubation Cell and has raised about $21 million.

It plans a constellation of 30 satellites over five years, targeting defence, government, agriculture, infrastructure, insurance, maritime intelligence and disaster management. In August it acquired StarOps, a Bengaluru spacecraft engineering firm, to bring more satellite systems work in-house.

One fact is missing from most accounts of this announcement.

Mission Drishti, the satellite that carried OptoSAR into orbit on 3 May, has been reported lost. About two months after launch it was deemed a failure following a geomagnetic storm, and it is no longer operating. GalaxEye's patent announcement does not address the spacecraft's status, and most coverage has described Drishti in the present tense as the world's first OptoSAR imaging satellite.

Both things are true. Drishti did demonstrate the concept in orbit, at about 190 kg and as India's largest privately built Earth observation satellite at the time. It is also gone.

That does not diminish the patent. Intellectual property is not contingent on a particular spacecraft surviving, and the invention was validated in flight before the loss. But it changes what the milestone means. GalaxEye holds protection in the largest Earth observation market for a technology whose only flight article is no longer in service, and the next satellite now carries more weight than it otherwise would.

The commercial logic of a US patent is worth stating plainly. The biggest buyers of Earth observation data are American defence and intelligence agencies and American analytics companies. Holding US intellectual property is what allows a foreign supplier to sell into that market without being replicated by a domestic competitor.

Read alongside what is happening at the other end of India's space sector, this is the more revealing half of the picture.

Two days ago the country's largest industrial groups, L&T, Adani, JSW, Mahindra and Bharat Forge among them, were lining up for the transfer of ISRO's heaviest launch vehicle. That process is effectively closed to venture-funded startups, because absorbing a complete technical package and then funding launch infrastructure is a balance-sheet test rather than an engineering one.

GalaxEye is what Indian space venture capital does instead. Payload, sensing, data. A US patent, a 30-satellite plan and an acquisition to bring spacecraft engineering in-house, all on about $21 million.

That allocation is rational. The addressable market for Earth observation data is far larger than the market for launch services, the capital requirement is an order of magnitude lower, and the customer can be anywhere in the world. It is also the same pattern visible across Indian technology this year. Capital goes to the application layer, not the infrastructure layer. Chip design has raised $162 million in total since 2023. Insurtech money goes to distribution rather than underwriting. Space money goes to satellites rather than the rockets that carry them.

The consequence is that India's private space sector is being built as a customer of launch capacity rather than a supplier of it, while the supply side is handed to conglomerates.

The near-term constraint is arithmetic. Thirty satellites over five years against $21 million raised is not a funded plan. Drishti alone weighed 190 kg. The patent improves the story GalaxEye can take to investors, and the StarOps acquisition reduces what it has to buy from others, but a constellation requires capital of a different order.

A US patent is a genuine asset and a real technical achievement. It is not a satellite, and GalaxEye currently has none in service.

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