Indian space-tech startup GalaxEye has secured a US patent covering its OptoSAR satellite imaging architecture, which combines optical and Synthetic Aperture Radar technology in a single spacecraft. The approach is designed to synchronise imagery from both sensors, helping produce more closely aligned Earth observation data across different conditions. While optical imaging can be limited by darkness and cloud cover, SAR can operate without sunlight and through clouds. GalaxEye says the technology could support applications including agriculture, defence, insurance and disaster response.
GalaxEye Secures US Patent for OptoSAR Satellites With All-Weather Imaging
GalaxEye says its US patent covers OptoSAR technology that integrates optical and synthetic aperture Radar imaging in one spacecraft for more consistent observation of the Earth.
GalaxEye's US patent recognition is a milestone for India’s private space sector, protecting the startup’s OptoSAR architecture for Earth observation from a satellite.
The New Delhi-headquartered space-tech startup claims it is the first Indian space-tech startup to be granted a US patent for satellite imaging technology.
The patent includes OptoSAR, GalaxEye’s technology to synchronise optical imaging and Synthetic Aperture Radar, combining complementary approaches to generate richer Earth observation data.
GalaxEye OptoSAR technology combines two imaging methods
Optical satellites use cameras to take pictures of sunlight reflected off the surface of the Earth, producing identifiable images of vegetation, buildings, roads, and water bodies across the surface of the planet.
Optical imaging, however, relies on available sunlight and can be severely limited by darkness or clouds, thus hindering observations in adverse weather conditions.
Rather than using visible light, Synthetic Aperture Radar (SAR) sends microwave signals to the Earth and measures the signals that bounce back. This allows observations to be made without sunlight or clear skies.
SAR signals can penetrate clouds, so satellites can observe areas at night and in cloudy conditions when conventional optical systems may not be able to.
Yet using separate satellites for optical and SAR observations can complicate precise comparisons as the images may differ in timing, viewing angles and ground conditions.
GalaxEye’s approach is to combine optical and SAR imaging technologies into the same spacecraft and to synchronise their imagery, leading to spatially and temporally aligned observations.
GalaxEye said the system-level architecture on which its U.S. patent is based could be used for applications that require more complete Earth intelligence.
Suyash Singh highlights global potential of OptoSAR
The patent is a recognition of technology developed and engineered in India, not imported or adapted, said Suyash Singh, founder and CEO of GalaxEye.
The invention demonstrated what Indian deep-tech companies could produce in the country, Singh said, and protection in the US offered a critical validation as GalaxEye looks to enter international markets.
He added that the technology could provide weather-independent satellite imaging capabilities for sectors such as defence, agriculture, insurance and disaster response.
The patent was an example of the innovation coming out of India’s growing private space ecosystem, said Somanath S Panicker, former chairman of ISRO.
The uniqueness of OptoSAR is the system-level synchronisation of optical and SAR sensors to provide inherently aligned Earth observation data, Panicker added.
He said the technology could have commercial potential in applications requiring richer, more actionable intelligence and demonstrates India’s ability to develop differentiated space technologies.
GalaxEye tested the concept through Mission Drishti, launched on 3 May 2026, with the satellite weighing approximately 190 kilograms during its mission.
Mission Drishti was presented as the first satellite to combine optical and SAR imaging techniques, providing a practical demonstration of the company’s OptoSAR architecture.
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What the GalaxEye US patent actually protects
A US patent does not mean the United States government has certified GalaxEye satellites for commercial operations, nor does it prohibit others from developing SAR technology.
Patents give owners legal rights against unauthorised making, using, selling, or importing, according to the United States Patent and Trademark Office (USPTO).
For GalaxEye, those rights are tied to the specific patented implementation of its OptoSAR satellite architecture, rather than to establish exclusive ownership of the optical-SAR fusion itself.
The patent protection is supposedly for a period of 20 years according to the US patent regime in effect and the specific rights conferred.
When the USPTO examines a patent application, it considers factors such as whether an invention is new, useful, and non-obvious.
Protecting intellectual property can be commercially important for deep-tech companies. Complex spacecraft architectures require large investments, specialised engineering, and deep development expertise.
Drishti setback and GalaxEye’s next phase
The technology of GalaxEye also hit a major roadblock with Mission Drishti, which was later declared a failure due to an in-orbit incident, despite the patent milestone.
The supplied report stated that Drishti was lost in space about two months after launch due to a geomagnetic storm, which limited the mission’s operational outcome.
The setback has not halted GalaxEye’s longer-term ambitions to build a constellation that can provide continuous Earth observation.
In line with the company’s stated expansion ambitions and wider spacecraft development strategy, GalaxEye plans to launch 30 OptoSAR satellites in five years.
Acquisition of Bengaluru-based software development company StarOps is another step to boost GalaxEye’s spacecraft engineering and manufacturing capabilities.
For Sprouts News, the patent is an intellectual-property milestone, but also a broader test of whether India’s private space industry can commercialise original technologies around the world.
The next challenge for GalaxEye will be to translate patented architecture into reliable spacecraft, successful missions and commercially valuable services while continuing to expand its international market presence.
