Indian Air Force to acquire twenty passive surveillance systems for ‘sharpening’ its air defence operations

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

Passive Surveillance Systems are land-based systems that detect and track aerial targets by passively listening to their emissions like radar signals, radio communication and even engine noise. Unlike active radar systems that emit signals, the PSS are stealthy and are undetected by most radar systems. A PSS involves three or four remote listening station and control stations. The gamut of PSS encompasses Emitter Location System, Passive Radar Systems and Electro-Optical Sensors.

The Indian Air Force (IAF) seeks PSS that are capable of detecting and intercepting. The PSS will be able to detect a wide range of aerial targets such as aircrafts, drones and missiles. They will be able to track and intercept these targets providing valuable information to air defence systems.

The PSS will be able to pinpoint the location of detected targets and identify them on the basis of unique signal characteristics, which allows for faster and more accurate targeting of threats. Additionally, the PSS will be able to track the movement of detected targets, providing real time situated awareness to air defence commanders

Benefits of the PSS

The PSS will provide enhanced air defence capabilities by providing early warning of potential threats, even those using stealth technology. It will allow for continuous and accurate information about air situation allowing for better decision making and faster response times. Compared to active radar systems, the PSS are generally cost effective to operate and maintain.

The acquisition of the PSS is part of India’s broader effort to modernize its air defence systems such as the Akash SAM (Surface to Air Missile) and the acquisition of advanced generation fighter aircraft like Dassault Rafale from France, a crucial ally of India.