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30+ Years of Excellence

Shanthi Engineering Works

Innovating RADAR Systems

Three Decades of Precision. Trusted by India's Defence & Space Establishment.

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Pan-India Deployments
Who We Are

About SEW

Shanthi Engineering Works (SEW) is a Chennai-based engineering enterprise with over three decades of specialized experience in RADAR systems - from erection and assembly to full commissioning and long-term maintenance.

Founded by S. Rangasamy, SEW works across national defence, space research, air traffic management, and meteorological surveillance, handling not just the technical work but the logistics of deploying, relocating, and sustaining RADAR infrastructure in remote and challenging locations.

Sole ProprietorshipSince establishment - deep personal accountability on every project
Government-Grade QualityStandards aligned with defence and space sector requirements
All-Terrain DeploymentsMountain, coastal, maritime, urban, and open-terrain installations
Expert Field WorkforceSeasoned engineers trained in RADAR assembly & commissioning
What We Do

Our Services

End-to-end RADAR engineering solutions - from steel erection to system handover - delivered across India's most demanding environments.

RADAR Erection & Assembly

Full structural erection of RADAR antenna towers, masts, and lattice steel frameworks. We handle foundation-to-apex assembly with precision alignment for optimal signal performance across all system types.

Radome Installation & Maintenance

Expert installation, alignment, and maintenance of protective radomes for all weather and defence RADAR systems. We ensure structural integrity and RF transparency throughout the radome lifecycle.

System Commissioning & Handover

Comprehensive end-to-end system commissioning including alignment verification, performance testing, calibration, and formal handover documentation. We ensure your RADAR system is operationally certified.

Dismantling & Relocation

Safe, systematic dismantling of RADAR installations for relocation or decommissioning. We preserve equipment integrity through structured disassembly, transport coordination, and reinstallation at new sites.

Air Traffic RADAR Systems

Installation and commissioning of Air Traffic Control RADAR systems at airports and defence airfields. We deliver precision-grade ASR and ARSR systems that meet the rigorous standards of DGCA and Indian Air Force.

Weather & Defence RADAR Systems

Specialized installation of Doppler weather RADAR (DWSR), C-band, S-band, and X-band systems for IMD and defence applications. We handle structural, RF, and systems integration for complete meteorological and surveillance capability.

Our Partners

Institutions We Serve

Three decades of government-grade delivery have earned SEW the confidence of India's defence, space, and scientific organizations.

IN
Indian Navy
Shipborne and coastal RADAR installations for India's primary naval defence force, ensuring maritime domain awareness.
ICG
Indian Coast Guard
Coastal surveillance RADAR systems supporting India's maritime security and search & rescue operations.
BEL
Bharat Electronics Limited
India's premier defence electronics PSU - supplying RADAR systems to all three armed services and strategic sectors.
NAL
National Aerospace Laboratories
CSIR's premier aerospace R&D institution, advancing India's civil aviation and atmospheric research capabilities.
IMD
India Meteorological Department
India's national weather agency operating Doppler weather RADAR networks for forecasting and disaster warning.
ISRO
Indian Space Research Organisation
India's apex space agency operating tracking RADAR and telemetry systems at launch sites across the country.
Our Work

Projects Across Scope & Terrains

Representative deployments showcasing SEW's capability across India's most diverse and demanding environments.

Radome installed atop a government administrative building in Chennai
Urban

Urban High-Rise Deployment

Radome and antenna installation atop government administrative building in Chennai - structural assessment, rooftop reinforcement, and commissioning in a dense urban environment.

RADAR tower erected on a high-altitude mountain site
Mountain

High-Altitude Mountain Installation

RADAR tower erected at 3,000m+ altitude for defence surveillance. Extreme weather logistics, helicopter-assisted material transport, and cold-environment commissioning protocols.

RADAR antenna mounted on a coastal lighthouse
Coastal

Coastal Lighthouse Surveillance

RADAR antenna mounted on active lighthouse structure for Indian Coast Guard coastal monitoring. Saltwater environment hardening, structural compatibility analysis, and marine-grade commissioning.

Naval vessel at a shipyard with its RADAR mast under installation
Maritime

Naval Vessel Installation

Shipborne RADAR antenna installation aboard Indian Navy vessel. Crane-assisted assembly, vibration-isolated mast mounting, and at-berth systems commissioning with naval engineering teams.

Lattice steel RADAR tower being erected by crane
Open Terrain

Ground RADAR Tower

Lattice steel tower erection on open terrain for long-range defence surveillance RADAR. Civil foundation, steel assembly, antenna mounting, and full systems integration with ground equipment shelter.

Parabolic dish antenna installed atop a building
Precision

Parabolic Dish Installation

Large-aperture parabolic antenna installation for ISRO/IMD class applications. High-precision azimuth/elevation alignment, encoder calibration, and RF performance verification against design specifications.

Our Edge

Why Choose SEW

Four reasons organizations across India's defence, space, and weather sectors choose Shanthi Engineering Works for RADAR infrastructure work.

30+ Years of Proven Expertise

Three decades of continuous RADAR work, spanning legacy analog systems to modern digital phased-array platforms.

Trusted by India's Defence Establishment

Long-standing client relationships across defence, space, and meteorology, including strategic projects that call for strict security and confidentiality.

All-Terrain Deployment Capability

Teams trained for high-altitude, coastal, maritime, and urban sites, including remote locations and adverse conditions.

End-to-End: Erection to Commissioning

One team from structural erection and RF alignment through systems integration to commissioning and documented handover, with single-point accountability.

Leadership

The Founding Vision

SR
S. Rangasamy
Proprietor, Shanthi Engineering Works

With over three decades at the helm, S. Rangasamy has built Shanthi Engineering Works into an established name in RADAR systems deployment. His expertise spans structural erection, mechanical alignment, electronic commissioning, and systems integration, and he stays personally involved in every major project.

His leadership philosophy is simple: government-grade quality is not a specification - it is a way of working. It shows in SEW's record of on-time, on-specification delivery, whether at a remote mountain site or aboard a naval vessel.

Get In Touch

Contact SEW

Ready to discuss your RADAR project? Reach out directly - we respond to all serious inquiries from defence, space, and government organizations.

Direct Contact

Phone +91 - 9444 456 121
Email rangashanthi@gmail.com
Location Chennai, Tamil Nadu, India
Availability: We accept project inquiries from government organizations, defence PSUs, and authorized contractors. Response time is typically within 24 working hours. For urgent requirements, please call directly.
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