The GM403 Ground Controlled Interception (GCI) Radar System

 The GM403 Ground Controlled Interception (GCI) Radar System (part of the Thales Ground Master 400 family) is an advanced 3D tactical air defense radar manufactured by the French company Thales Group. It functions as the "eyes and ears" for early detection of air threats and control of interceptor or fighter aircraft operations.

Main Functions of the GM403 GCI Radar:

Surveillance & Early Warning Center: Detects unidentified aerial objects, foreign fighter jets, missiles, and low- and high-flying drones (UAS).

Air Defense Controller (Interception): Guides friendly fighter jets (such as the Rafale) from the ground in real time to enemy aircraft positions for interception or dogfights.

C4ISR (Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance) & Network-Centric Warfare System: Serves as part of a national tactical network to transfer real-time combat data from command headquarters to various combat units in the field.

Key Features and Benefits

Extremely Wide Range: Capable of monitoring air targets within a radius of up to 515 kilometers.

Mobile Design: Unlike the GM406 series, which is permanently installed in a fixed location, the GM403 radar is designed to be easily dismantled and transported using military vehicles for high tactical flexibility.

3D AESA Technology: Uses digital Active Electronically Scanned Array technology to track multiple targets simultaneously with high accuracy and strong resistance to electronic interference (jamming).

Role in the Indonesian Military (TNI AU)

The Indonesian Ministry of Defense, through PT Len Industri, procured 13 GM403 radars to modernize the nation's defense equipment. Some of these radar units were assembled domestically with PT Len Industri in Bandung. These radar units have been gradually handed over to the TNI AU (since May 2026) to secure Indonesia's sovereign airspace, including special surveillance in the Indonesian Capital City (IKN) area.