Sisir Radar

What Sisir Radar does

Sisir Radar Private Limited is an Indian space and defence technology company founded in 2022 in Kolkata, developing Synthetic Aperture Radar (SAR), Ground Penetrating Radar (GPR), and Hyperspectral Imaging systems for spaceborne, airborne, drone, and ground-vehicle platforms. The company's core technology spans P, L, and X band SAR, with claimed proprietary capabilities including what it describes as the world's highest resolution L-band SAR (sub-metric, 1-meter resolution) and the world's first high-resolution P-band SAR for ground penetration, supported by a patented strip map mode that delivers resolution and coverage roughly 100x higher than conventional spotlight mode. Sisir Radar has also built India's first Software Defined Radar, an ultra-wideband GPR with better than 5cm resolution and 20m penetration, and a drone-based hyperspectral system processing 50+ spectral bands using custom analysis algorithms.

The company's products are sold primarily to Indian defence and strategic customers, including the Indian Air Force, Ministry of Defence, and DRDO, with commercial pilots in mining (Vedanta, Hindustan Zinc). Sisir Radar monetises through direct sale of hardware (SAR satellite systems, drone-borne SAR, GPR, hyperspectral systems) and licensing of proprietary radar technology. Go-to-market is enterprise and government field sales, leveraging IDEX challenge wins, R&D partnerships with IN-SPACe and IIT Kharagpur, and strategic alliances with Bharat Electronics and Astra Microwave Products. In May 2025 the company launched India's first private L-band SAR satellite in partnership with XDLINX Space Labs, and has an MoU with Nibe Space to supply SAR satellites for a private earth observation constellation. The company is backed by Shastra VC and 360 ONE Asset, having raised $1.5M in seed funding (February 2025) and $7M in Series A (December 2025).

Name

Sisir Radar

Legal name

Sisir Radar Private Limited

Website

https://sisirradar.com

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

11–50 employees

Short description

Sisir Radar is an Indian space and defence technology startup developing high-resolution Synthetic Aperture Radar (SAR), Ground Penetrating Radar, and Hyperspectral Imaging systems across P, L, and X bands for defence, mining, agriculture, and environmental customers.

Ownership category

akta.pro rank

Product category

Spaceborne and Airborne Radar Systems

NAICS

Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511), Guided Missile and Space Vehicle Manufacturing (336414)

SIC

Search, Detection, Navagation, Guidance, Aeronautical Sys (3812), Guided Missiles & Space Vehicles & Parts (3760)

akta.pro primary industry

Radar Systems & Subsystems (Airborne, Ground, Naval) (IMABAGAA)

akta.pro secondary industries

Spacecraft & Satellites (Civil/Commercial) (IMABACAB), Space Payloads & Instruments (Sensors, Comms, EO/IR) (IMABACAD), Space-Based Defense Systems (SSA, Missile Warning, Protected SATCOM) (IMABAOAH), Small Unmanned Aerial Systems (sUAS) & Multirotor Drones (IMABAIAA), Satellite Imagery & Remote Sensing Geospatial Platforms (BPAMANAM)

Keywords

• Synthetic aperture radar
• Ground penetrating radar
• Hyperspectral imaging
• Earth observation satellites
• Spaceborne radar systems

Headquarters

HQ city

Kolkata

HQ country

India

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Supply Chain, Infrastructure, Marketing or Sales, Operations

Revenue model

1. SAR Satellite Systems: Sale of spaceborne SAR satellite systems and satellite imaging data services for Earth observation applications.
2. Drone-Borne SAR Systems: Sale of drone-mounted SAR systems for aerial surveillance and monitoring applications.
3. Ground Penetrating Radar (GPR): Sale of GPR systems in various form factors including drone-mounted, UGV, and handheld configurations for subsurface imaging applications.
4. Hyperspectral Imaging Systems: Sale of drone-based hyperspectral imaging systems with proprietary analysis software.
5. Technology Licensing: Licensing of proprietary SAR technology and radar systems to defence and strategic partners.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Sisir Radar designs, engineers, and manufactures advanced Synthetic Aperture Radar (SAR) systems operating across P, L, and X bands for spaceborne, airborne, and ground platforms. The company also produces Ground Penetrating Radar (GPR) systems in drone-mounted, UGV, and handheld form factors, drone-based Hyperspectral Imaging systems, and Antenna Measurement Systems. Its flagship products include the world's highest resolution L-band SAR, the world's first high-resolution P-band SAR, and India's first privately-built L-band SAR satellite.

Product overview

Sisir Radar is an Indian spacetech company specializing in high-resolution SAR satellites and radar imaging systems. The company offers a portfolio of radar and imaging products: Synthetic Aperture Radar (SAR) systems across P, L, and X bands for spaceborne, airborne, and drone platforms; Ground Penetrating Radar (GPR) for subsurface imaging; Hyperspectral Imaging Systems for agricultural and environmental monitoring; and Antenna Measurement Systems. The flagship L Band SAR is claimed to be the world's highest resolution, while the company also developed India's first private L-band SAR satellite (launched May 2025) and the country's first X-band SAR. Products are designed, engineered, and built in India, serving defence, agriculture, mining, urban planning, and environmental monitoring sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Synthetic Aperture Radar (SAR) Systems Advanced SAR systems operating across P, L, and X bands for terrestrial, aerial, and spaceborne platforms, providing all-weather, 24/7 monitoring with unmatched deployment flexibility for defence, agriculture, mining, urban planning, and environmental monitoring applications.
• Ground Penetrating Radar (GPR) Systems Rugged and ultra high bandwidth GPR systems mountable on drones, UGVs, or in handheld form factors, offering better than 5cm resolution and exceptional depth penetration for IED detection, mineral exploration, archaeological surveys, and infrastructure monitoring.
• Hyperspectral Imaging System Drone-based hyperspectral imaging system using custom analysis algorithms to rapidly process data across 50+ spectral bands, providing actionable insights for agriculture, environmental monitoring, and mineral identification applications.
• Far-Field Antenna Measurement System Practical tool that improves and streamlines antenna testing with real-time radiation pattern observation using a proprietary application, providing detailed measurements of antenna radiation patterns and realised gain across the full frequency range.
• Near-Field Antenna Measurement System Fully automated high-precision scanning technology with anechoic chamber providing seamless software-controlled scanning with the lowest interval of 5mm spacing.
• India's First Private L-Band SAR Satellite India's first privately-built L-band SAR satellite, providing 1-meter resolution imagery for all-weather, day/night Earth observation applications serving defence, agriculture, mining, urban planning, and environmental monitoring.

Quantifiable outcome

• 10x better resolution than market standard for L and P band SAR systems
• +4 more outcomes

Named customers7 records

Segments5 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Nine partnerships are on record, tiered core and strategic.

• Nibe SpacecoreStrategic or Co-development Partner · 1 September 2024Sisir Radar signed an MoU with Nibe Space to supply SAR satellites for their private earth observation constellation that will deliver high resolution imagery, benefiting military and industrial sectors. This represents a significant strategic partnership for satellite constellation development.
• Indian Air ForcecoreStrategic or Co-development PartnerIndian Air Force has partnered with Sisir Radar through IDEX challenges for developing SAR satellite payloads. The company has secured contracts with the Indian Air Force for L and P band SAR satellite development with unfurlable antenna technology.
• XDLINX Space LabscoreStrategic or Co-development PartnerIn May 2025, Sisir Radar and XDLINX Space Labs jointly launched India's first Private L-Band SAR Satellite offering 1-meter resolution, marking a significant milestone for private space-tech development in India.
• Ministry of DefencecoreStrategic or Co-development PartnerMinistry of Defence has established partnership with Sisir Radar through IDEX challenge programs supporting development of advanced SAR technology for Indian defence applications.
• DRDOcoreStrategic or Co-development PartnerDefence Research and Development Organisation (DRDO) is a key partner for Sisir Radar in developing advanced radar and sensor technologies for defence applications.
• Bharat ElectronicsstrategicTechnology or IntegrationStrategic partnership with Bharat Electronics for defence electronics and radar technology development and integration.
• Astra Microwave ProductsstrategicTechnology or IntegrationPartnership with Astra Microwave Products for microwave and radar component technology.
• IN-SPACestrategicStrategic or Co-development PartnerPartnership with Indian National Space Promotion and Authorization Center (IN-SPACe) for space technology development and authorization.
• IIT KharagpurstrategicStrategic or Co-development PartnerAcademic partnership with IIT Kharagpur for research and development in radar and space technology.

Scale indicators8 records

Expansion highlights5 records

Direct peers

• ICEYE: Finnish SAR satellite operator with the world's largest commercial SAR constellation. Directly comparable to Sisir Radar on spaceborne L/X-band SAR for defence and commercial customers; ICEYE's scale and capital base set the benchmark Sisir Radar must close.
• Capella Space: US-based SAR satellite operator offering high-resolution all-weather imagery to defence, intelligence and commercial customers. Closely comparable business model (SAR data services + satellite sales) and target customer base to Sisir Radar.
• Umbra: US-based SAR satellite operator offering high-resolution imagery for defence and commercial use. Directly comparable on product (X-band SAR satellites), target market (US DoD and commercial), and the constellation-based recurring-data model Sisir Radar is pursuing.
• Synspective: Japanese SAR satellite operator building a constellation of L-band SAR satellites for infrastructure, disaster response and defence applications. Comparable to Sisir Radar in L-band SAR satellite focus and dual-use defence/commercial customer strategy.

Emerging players

• GalaxEye Space: Indian spacetech startup developing multi-modal (SAR + optical) earth observation satellites. Direct Indian market peer and potential competitor for the same 'first private Indian EO constellation' narrative and defence customers.
• PierSight: Indian satellite startup focused on SAR and persistent maritime surveillance. Comparable as an early-stage Indian SAR satellite competitor chasing similar defence and commercial EO customers with limited capital.

Broad incumbents

• Northrop Grumman: US defence prime with deep SAR and radar heritage, including airborne and space-based SAR for defence and intelligence customers. Sets the global benchmark in defence-grade SAR systems and competes for the same institutional defence budgets Sisir Radar targets.
• Thales Alenia Space: European aerospace manufacturer of SAR satellites (including COSMO-SkyMed second generation) and space-based radar systems. Comparable as a global incumbent offering spaceborne SAR platforms and serving defence/earth observation customers.
• Lockheed Martin: US defence prime supplying airborne SAR, space-based radar, and ISR systems globally. Overlaps with Sisir Radar on airborne SAR payloads, radar electronics, and defence customer relationships, though Lockheed's portfolio is far broader.

Regional players

• Bharat Electronics (BEL): Indian public-sector defence electronics major and existing Sisir Radar partner for radar systems and integration. Comparable as the dominant domestic radar/defence electronics supplier Sisir Radar must position alongside rather than against for Indian defence contracts.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/SisirRadar
• LinkedInlinkedin.com/company/sisir-radar
• Facebookfacebook.com/sisir.radar
• Instagraminstagram.com/sisirradar

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds4 records

Investors6 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sisir Radar