The AN/SPQ-9B radar. (Photo: Northrop Grumman)
Military Aerospace Electronics reports, “DRS Laurel to build missile-defense radar systems to protect Navy surface warships from anti-ship missiles”,
U.S. Navy missile-defense experts are asking the DRS Laurel Technologies segment of Leonardo DRS in Johnstown, Pa., to provide AN/SPQ-9B shipboard anti-ship missile defense (ASMD) radar systems to help protect U.S. Navy surface warships from enemy anti-ship missiles.
Officials of the Naval Sea Systems Command in Washington announced a $8.7 million order to DRS Laurel last month to build AN/SPQ-9B radar systems and support equipment.
Bertholf class NSCs mount the AN/SPQ-9B and I suspect this order may include the system for NSC#11. It is one of the things that has made them better equipped than the Littoral Combat Ships. I had been under the impression the AN/SPQ-9B was a fire control radar, it is associated with weapon systems, but reading the description I decided to look for a better information and found the Navy’s description here.
The AN/SPQ-9B is an X-Band, pulse Doppler, frequency agile radar which was designed specifically for the littoral environment. It has a very high clutter improvement factor supporting a very low false track rate in the littorals and in high clutter environments.
The AN/SPQ-9B scans out to the horizon and performs simultaneous and automatic air and surface target detection and tracking of low flying Anti-Ship Cruise Missiles (ASCMs), surface threats and low/slow flying aircraft, UAVs and helicopters.
It now almost 30 years old, but is apparently still being upgraded and put on new construction.
The radar is installed on CVN-68, LPD-17, CG-47, WMSL-750, LHD-1 and LHA-6 ship classes. The radar is also to be installed on DDG-51 class, DDG 39, 41, 42 (AUS), DDG AMOD, CG MOD (CG 63 and follows). CVN-68, DDG-51, LPD-17, CG-47, LHD-1, LHA-6 ship classes will receive PDD (periscope detection and discrimination–Chuck) Upgrade.
I have seen nothing to indicate the OPCs will have this system.
In the photos, the AN/SPQ-9B is visible on the forward side of the mast near the top. The multimode radar, the Hensoldt TRS-3D (AN/SPS-75) is higher and on the aft side of the mast. The multimode radar is used for helicopter control, so it needs to look aft.