Germany’s Hensoldt has launched a new land-based version of its TRS-4D Active Electronically Scanned Array (AESA) radar.
The radar, designated the TRML-4D, uses a gallium nitride (GaN) solid-state transmitter and software-defined AESA system operating in the C-band (NATO G-band).
“The missiles that need to be defended against are either more agile, they are getting faster, or they are coming in swarms that try to saturate the system. These are some of the principal threats that we have to deal with in coming up with a new system,” Markus Rothmaier, head of naval and ground radar at Hensoldt said.
According to Rothmaier, the C-band gives the radar superior accuracy compared with other systems in the S-band range.
“With this higher accuracy, we can ensure that the overall system of radar, command-and-control system, and the effector is increasing its probability to kill the threat.”
The TRML-4D has an instrumented sensitivity of a radar cross-section of 0.01 m 2 , and a maximum range of 250 km to a height of 30 km. The minimum range is less than 100 m. Fighter aircraft can be tracked as confirmed targets at ranges over 120 km, with supersonic missiles as confirmed targets at over 60 km.
The radar’s AESA-based ‘cued track’ functionality is also able to establish a track within the first rotation of the antenna, obtaining improved track information through a “look-back” functionality as the antenna completes its rotation. By the time the antenna begins its second rotation, it then has a third hit of the target to allow for improved track stability of targets.
According to Rothmaier, this functionality is useful against pop-up targets, as well as targets that are performing high-performance manoeuvres. It allows for higher track rate updates in a minimum number of scans, while also increasing the time for weapons systems to react.
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