1986. Following the evaluation, the upgraded system,
identified as Mk 92 Mod 6 was installed in USS
Ingraham (FFG-61). The Mk 92 Mod 6 will replace the
Mod 2 systems in the fleet.
The Mk 92 Fire Control System (FCS) is deployed
on board FFG-7 PERRY class ships in conjunction
with the Mk 75 Naval Gun (fig. 2-12) and the Mk 13
Guided Missile Launching System (fig. 2-13). The Mk
92 FCS integrates target detection with multichannel
antiair and antisurface missile and gun systems
control, engaging up to four targets simultaneously.
The Mk 92 “track-while-scan” radar uses the
Combined Antenna System (CAS), which houses a
search antenna and a tracker antenna inside a single
egg-shaped radome (fig.2-14). A Separate Target
Illumination Radar (STIR) (fig. 2-14) designed for the
PERRY class Mk 92 FCS application provides a large
diameter antenna for target illumination at ranges
beyond CAS capabilities.
A Mod 1 version of the Mk 92 system is installed
on the US Coast Guard’s WMEC (Medium-Endurance
Cutter, figure 2-15) and its WHEC (High-Endurance
Cutter). This version can track one air or surface target
using the monopulse tracker and two surface or shore
targets using track-while-scan data from CAS. Using
STIR, the Mod 2 system on FFG-7 class frigates can
track an additional air or surface target.
CLOSE-IN WEAPON SYSTEM RADAR
The Mk 15 Phalanx Close-In Weapon System
(CIWS — pronounced “sea-whiz”) is a stand-alone,
quick-reaction time defense system that provides final
defense against incoming air targets. CIWS will
a u t o m a t i c a l l y e n ga g e a n t i - s h i p m i s s i l e s a n d
high-speed, low-level aircraft that penetrate the ship’s
primary defenses. As a stand-alone weapon system,
CIWS automatically searches for, detects, tracks,
evaluates for threat, fires at, and assesses kills of
targets. A manual override function allows the operator
to disengage a target, if necessary.
The search and track radar antennas are enclosed
in a radome mounted on top of the gun assembly (see
2-10
Figure 2-12.—Mk 75 Naval Gun system.
Figure 2-13.—Mk 13 Guided Missile Launcher system.
