Hensoldt Installs First Two TRS-4D Naval Radars Aboard U.S. Navy’s Freedom Variant Littoral Combat Ships

Hensoldt has successfully installed the first two of its TRS-4D naval radars aboard the U.S. Navy’s Freedom Variant Littoral Combat Ships (LCS), the company announced.

After passing acceptance trials on Lake Michigan, the radar on-board the future USS Indianapolis (LCS-17) was delivered by Freedom Variant LCS prime contractor, Lockheed Martin, to the U.S. Navy. The second radar has been installed aboard the future USS St. Louis (LCS-19) and is preparing for acceptance trials.

“System characteristics of the TRS-4D are an excellent match for the environment LCS faces,” says Ken Loy, Managing Director of HENSOLDT Inc. “The radar’s AESA technology delivers increased sensitivity to detect smaller targets with greater accuracy, as well as faster track generation to give LCS more time to react to advanced threats.”

The TRS-4D (recently designated by U.S. Navy as AN/SPS-80) radar for LCS is a rotating version of the Active Electronically Scanned Array (AESA) fixed panel TRS-4D radar currently going aboard the German F-125 frigates. The TRS 4D will be the first AESA rotating radar aboard a U.S. Navy ship.

The new radar combines mechanical and electronic azimuth scanning to achieve fast generation of target tracks. This software-defined radar is programmable by the customer, enabling changes to radar characteristics to match future threats that evolve over the life of the ship. The ability to customize the characteristics of the TRS-4D radar enables designers to maximize the inherent modularity of LCS variants to best suit a specific LCS configuration.

Currently, 8 TRS-4D are under contract for the Freedom Variant LCS. Six of them have passed factory acceptance.



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