Technology

GalaxEye secures US patent for OptoSAR Earth observation tech

2026-09-21 - ABikram Mondal

Indian startup claims first US patent on combined satellite imaging

GalaxEye announced on 8 September that it had received a United States patent for the core system that synchronises optical and synthetic aperture radar sensors on a single satellite. The Bengaluru company, founded by IIT Madras engineers, becomes the first Indian space startup to secure this protection for satellite imaging technology.

The patent covers the architecture that aligns optical and microwave sensors so they capture data of the same location at the same moment. Traditional systems either fly separate satellites or combine images after the fact, which introduces time gaps and alignment errors.

CEO Suyash Singh said in the company statement that the invention originated in India and was engineered here. The patent strengthens the firm’s position as it prepares to sell data to defence, government and commercial customers worldwide.

India’s private space sector now has roughly 440 startups and cumulative investment reached about 618.5 million dollars by March 2026, according to government figures reported in Parliament. GalaxEye’s milestone arrives as IN-SPACe has granted 113 authorisations to 52 non-government entities.

How the synchronised sensors work on one platform

Optical sensors deliver high-resolution colour and spectral detail but fail under clouds or at night. SAR sensors penetrate weather and darkness yet lack the visual clarity of optical images. GalaxEye’s OptoSAR places both on the same spacecraft and triggers them together.

The result is a single dataset that is spatially and temporally matched without post-processing corrections. The company tested the approach on its first satellite, the 190 kg Drishti, launched on 3 May 2026.

Drishti became India’s largest privately built Earth observation platform at the time. Contact was lost after a geomagnetic storm in July and the mission is considered a failure.

Despite the setback, the patent protects the underlying alignment method that the company will use on future satellites. Singh described the technology as weather-agnostic imaging that can serve agriculture, infrastructure monitoring, insurance, maritime intelligence and disaster management.

Plans for a 30-satellite constellation

GalaxEye intends to build and launch a constellation of 30 satellites over the next five years. The network will deliver repeated coverage for users who need consistent data rather than one-off images.

The company has a growing commercial pipeline with both domestic and international customers. It acquired Bengaluru-based spacecraft engineering firm StarOps in August to bring more manufacturing and systems work in-house.

Production will target defence and government contracts first, followed by commercial sectors. The firm expects the constellation to operate in low Earth orbit and provide data that remains useful even when optical-only or SAR-only satellites cannot deliver.

Funding to date totals around 21 million dollars. The patent adds intellectual property value that can support further capital raises or partnerships.

Comparison with established Earth observation providers

GalaxEye’s approach differs from pure optical constellations and pure SAR fleets. The table below lists key published parameters for representative systems.

Provider / System	Mass per satellite (kg)	Imaging modes	Constellation size (planned or operational)	Resolution range	Revisit frequency
GalaxEye OptoSAR (planned)	190 (Drishti demonstrator)	Optical + SAR simultaneous	30 over 5 years	Not publicly confirmed	Not publicly confirmed
Planet Labs (optical)	~5-10 (Doves)	Optical only	Over 200 operational	3-5 m	Daily global
ICEYE (SAR)	~100-200	SAR only	Over 20 operational, expanding	Sub-metre to 10 m	Hours to days depending on latitude
Maxar (optical, WorldView)	~2,500-3,000	Optical only	Small number of large satellites	0.3-0.5 m	Days

Numbers for GalaxEye’s future satellites remain unconfirmed beyond the demonstrator mass. The company has not released resolution or revisit targets for the 30-satellite network.

What the patent does not reveal

The US patent protects the alignment mechanism but does not disclose exact sensor specifications, power budgets or data processing pipelines. Customers will still need flight-proven hardware before committing to large contracts.

Drishti’s loss after two months in orbit highlights the risks of first-generation hardware in a new architecture. Subsequent satellites must demonstrate reliability through multiple launches and on-orbit operations.

Competition from established players with hundreds of satellites already in orbit means GalaxEye will need rapid scaling and proven data quality to win market share.

The technology addresses a real gap, yet the business case depends on execution rather than the patent alone.

Who should pay attention now

Defence and government agencies in India that require all-weather, day-night imaging with minimal post-processing effort have a new domestic option. The patent reduces the chance of similar systems being copied quickly.

Commercial users in agriculture and disaster response may find value once the constellation reaches operational scale and pricing becomes competitive with existing providers.

Other Indian space startups can view the achievement as validation that deep-tech inventions developed locally can secure international protection. It raises the bar for what counts as credible intellectual property in the sector.

Investors tracking the 44 billion dollar Indian space economy projected for 2033 will watch whether GalaxEye converts the patent into flight hardware and revenue contracts.

Next steps for the company

GalaxEye must complete at least one more successful satellite mission with the OptoSAR payload before it can claim operational status. The company has not announced a launch date for the next spacecraft.

Manufacturing capacity will need to increase sharply to meet the 30-satellite target within five years. The StarOps acquisition provides some of that capability.

International sales will require export licences and data-security assurances that meet the standards of foreign defence customers. Domestic contracts may move faster under current government space policy.

The patent filing date and grant timeline show the company has been working on the core invention for several years. Continued progress on the constellation will determine whether this milestone translates into sustained commercial success.

The short version. GalaxEye’s US patent protects the core alignment method for simultaneous optical and SAR imaging and supports its plan for a 30-satellite constellation, though operational performance remains unproven after the first satellite was lost.

Sources

Reported from the sources above on 2026-09-21. Figures are as published at the time of writing. If something here has moved on, the linked source is the one to trust.

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