Figure: AN/SPQ-9B Lightweight Back-to-Back Slotted Array Antenna |
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The AN/SPQ-9 Surface Surveillance and Tracking Radar,
developed by Northrop Grumman Norden Systems, Melville, NY, is a
track-while-scan radar used with the MK-86 Gunfire Control system 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 - will enable detection and establishing firm track ranges
on subsonic and supersonic sea-skimming missiles. The system concept
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 Gun Fire Control System and backup
navigation.
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 ships
weapon system. |
