Indonesia’s National Research and Innovation Agency (BRIN) is showcasing its achievements in the aerospace and defence domain at the ongoing Indo Defence. BRIN is highlighting achievements related to the development of a waveguide slot array antenna for GCI air defence radars. The waveguide slot array antenna is a key component in the Ground Controlled Interception (GCI) radar system, which is a long-range air defence system that functions to detect, track and guide the interception of targets in real time. The slotted waveguide antenna structure designed by Indonesian agencies is designed to withstand extreme operating conditions, providing stable performance while maintaining transmission efficiency.
Some of the key technologies listed by BRIN are, the ability of the waveguide slot array antenna to deliver a pencil beam for accurate target tracking; high antenna gain, which ensures wide detection range and optimal signal strength for tracking; low side lobe level, which minimizes interference from non-target directions, enhancing tracking efficiency; S-Band operating frequency, which provides stable performance across diverse environmental conditions along with a wide bandwidth of up to 600 Mhz, which enables fast response and high signal quality across multiple operational modes. The waveguide slot array antenna for GCI radars was developed by Indonesia’s Research Centre for Telecommunication and Research Organization for Electronics and Informatics.
BRIN is also highlighting achievements related to the development of Synthetic Aperture Radar (SAR) for precise monitoring and mapping. This will allow for high-precision, all-weather remote sensing for any terrain. The compact and flexible SAR technology enables high-resolution imaging around the clock in all weather conditions. It is suitable for use on medium-sized UAVs (fixed-wing or VTOL) and ground-based systems. This SAR technology will have its ideal uses for area monitoring, infrastructure surveys, emergency response and security missions. The compact and UAV friendly SAR solution developed by the Indonesian agencies provides detailed mapping through vegetation and soil through multimodal and multiangle data captures with reliable all-weather performance. The SAR technology developed is capable of operating from minus 10 degree centigrade to plus 50 degree centigrade offering stable performance in tropical or extreme climate conditions; a transmitting gain of 38 dB enables strong and stable signal transmission for high-quality image acquisition; the antenna gain of 20 dB ensures consistent signal reception and beam coverage. Operating range for the SAR technology is claimed to be up to 2 km with a high-power amplifier, making it ideal for short-to-medium range applications. The SAR technology was developed by Indonesia’s Research Centre for Aeronautics Technology and the Research Organization for Aeronautics and Space.
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