The AN/SPQ-9 Surface Surveillance and Tracking Radar, also known as the “Spook-Nine”, was developed by Northrop Grumman Norden Systems, Melville, NY, and is a track-while-scan radar used with the MK-86 and MK 160 Gun Fire Control Systems (GFCS) on surface combatants. It detects sea skimming missiles at the horizon, even in heavy clutter, while simultaneously providing detection and tracking of surface targets and beacon responses.
The upgraded SPQ-9B — which uses a high-resolution, track-while-scan, X-Band, pulse-Doppler radar — enables detection and establishes firm track ranges on subsonic and supersonic sea-skimming missiles. The system includes a new air mode that provides a new, low-cost, quality sea-skimmer detection capability and a surface mode with improved performance in support of the MK 86 and MK 160 GFCS.
The AN/SPQ-9B antenna provides for three beams. If an air target is detected in the main beam, two look-back beams provide confirmation and track promotion resulting in “single-scan” track disclosure to a ship’s weapon system. Northrop Grumman Corporation (NGC) has been delivering the SPQ-9 (series) radars to the U.S. Navy since 1994 and has produced these radars at its Melville, NY facility. With the MeIville, NY facility planned for closure in 2012, NGC sought partners to facilitate a seamless transition from in-house fabrication to outsourced support as management of this program shifts to Baltimore, MD.
After assessing all of the transition risks, NGC chose to partner with Defense veteran Electromet Corporation to continue this important program. Electromet was recently awarded a contract to provide electronic cabinets and supporting metal antenna components. Initial deliveries are scheduled to begin in October 2011. The deployment of the SPQ-9B variant is expected to continue for the next 5-10 years.