The SBS-3 Scheme: Expanding India's Satellite Surveillance Horizon

Understanding the SBS-3 Scheme: A New Era of Satellite Surveillance

The Space-Based Surveillance-3 (SBS-3) scheme marks a significant leap forward in India's satellite capabilities, with a hefty investment of $3 billion approved by the Cabinet Committee on Security in October 2024. This ambitious program focuses on constructing 52 surveillance satellites to bolster India's intelligence and security framework. Notably, the initiative aims to streamline the satellite development timeline from the traditional four years to a more agile period of 12 to 18 months.

The Need for Advanced Surveillance Satellites

Surveillance satellites are crucial for several strategic and tactical operations:

• Border Monitoring: Continuous surveillance of borders with Pakistan and China is essential for national security.
• Terrorism Tracking: These satellites provide real-time intelligence for anti-terror operations.
• Maritime Surveillance: Monitoring the Indian Ocean is critical for safeguarding trade routes and naval security.
• Disaster Response: Real-time imaging during natural disasters or civil unrest strengthens internal security and emergency response.

By developing these capabilities, India reduces its reliance on foreign satellite data, thus enhancing its data sovereignty.

Technical Specifications and Capabilities

The satellites being developed under the SBS-3 program are designed for low earth orbit (LEO) operations, equipped with advanced synthetic aperture radar (SAR) and electro-optical sensors. These technologies enable:

• Persistent surveillance capabilities
• Day-night and all-weather imaging
• High revisit capabilities over strategic areas

Private Sector Involvement

Three prominent Indian private firms are pivotal in the rapid deployment of these satellites:

• Ananth Technologies (Hyderabad): Specializes in launch integration and satellite systems, potentially launching by 2025.
• Centum Electronics (Bengaluru): Supplies key communication and electronic subsystems.
• Alpha Design Technologies (Bengaluru): Focuses on satellite payloads and integration, acquired by Adani Defence and Aerospace.

These companies, long-time partners of ISRO, have previously contributed to projects like Chandrayaan-3.

The Role of ISRO

While private firms are set to build 31 of the 52 satellites, ISRO will construct the remainder and manage the launch logistics. Utilizing rockets like LVM3 or outsourcing to SpaceX when necessary, ISRO ensures that technical oversight, launch safety, and alignment with national security protocols are maintained.

The Urgency Behind SBS-3

The need for this rapid development arises from several factors:

• Post-Kargil security doctrines
• Increasing cross-border threats and cyber-infiltration risks
• Direct security implications highlighted by India's Operation Sindoor

Satellite surveillance enhances India's pre-emptive strike capabilities and situational awareness.

Policy Directions and Long-term Outcomes

This project is a testament to India's strategic shift towards privatization in the space sector, driven by the government's intent under the IN-SPACe and NSIL frameworks. It not only boosts the private space economy but also encourages domestic firms to venture into strategic domains. The potential outcomes include:

• Enhanced defense infrastructure with real-time surveillance
• Increased export potential for Indian satellite technologies
• Development of dual-use technologies applicable to civilian sectors

Overall, the SBS-3 scheme is set to transform India's space capabilities, strengthening both security and economic prospects.