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The Indian Ministry of Defence (MoD) has issued a Request for Information (RFI) for the procurement of approximately 10-20 Passive Surveillance Systems (PSS) to be used by the Indian Air Force. This move signifies a significant step towards enhancing India’s air defence capabilities.

Passive Surveillance Systems (PSS) are land-based systems that detect and track aerial targets by passively listening to their emissions, such as radar signals, radio communications, and even engine noise. Unlike active radar systems that emit their signals, PSS are stealthy and undetectable by most radar systems.

The Indian Air Force seeks PSS capable of:

  • Detecting and intercepting: PSS will be able to detect a wide range of aerial targets, including aircraft, drones, and missiles. They will also be able to intercept and track these targets, providing valuable information to air defence systems.
  • Locating and identifying: PSS will be able to pinpoint the location of detected targets and identify them based on their unique signal characteristics. This allows for faster and more accurate targeting of threats.
  • Tracking: PSS will be able to continuously track the movement of detected targets, providing real-time situational awareness to air defence commanders.

Benefits of Passive Surveillance Systems:

  • Enhanced air defence: PSS will bolster India’s air defence capabilities by providing early warning of potential threats, even those using stealth technology.
  • Improved situational awareness: PSS will provide continuous and accurate information about the air situation, allowing for better decision-making and faster response times.
  • Cost-effective: Compared to active radar systems, PSS are generally more cost-effective to operate and maintain.

The acquisition of PSS is part of India’s broader effort to modernize its air defence capabilities. This includes the development of indigenous air defence systems, such as the Akash surface-to-air missile system, and the acquisition of advanced fighter jets like the Rafale.

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