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REFERENCES - 14085_65
FIGURE 4-1. TYPICAL EXTERNAL COMPONENTS OF A COMBAT SYSTEM

Electronics Technician Supervisor (ET1)
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CHAPTER 4 COMBAT SYSTEMS Compared  with  older  combatant  ships,  today’s combatants  have  more,  and  increasingly  complex, electronics  and  weapons  equipment  and  systems. Therefore, changes must be made to the traditional organization  of  divisional  responsibilities.  This  means combining some of the responsibilities of the operations and weapons departments. Current practice calls for putting one officer, the combat systems officer, in charge of  all  weapon  system  (all  weapons  and  electronics subsystems)  maintenance.  This  combines  (integrates) the  maintenance  of  all  electronics  and  makes  the  ship more  capable  of  fulfilling  its  mission.  In  some configurations,  it  is  possible  that  the  engineering department   will   supply   personnel   for   supporting systems, such as gyro distribution, cooling systems, and primary and secondary power. All  subsystems  of  a  combat  system–weapons, search radar, communications, ASW, electronic warfare and  sonar–interface  through  the  NTDS/CDS subsystems.   These   collectively   compose   a   “single shipboard   system.” Figure  4-1  illustrates  typical external components of a combat system. In  the  past,  technicians  were  only  concerned with  maintaining  their  assigned  equipment  so  it operated  when  it  was  needed.  Under  the  combat systems  concept,  technicians  must  also  ensure  the accuracy  of  their  equipment’s  and  systems’  outputs into   the   combat   system.   This   means   that technicians  must  cross  traditional  boundaries  and become familiar with the operation and capabilities of  the  overall  system.  The  outputs  of  combat system equipment into the combat direction system (CDS)  and  weapon  system  control  equipment  must be  accurate,  or  within  assigned  standards.  Without accurate signals and data, the ship may not be able to  handle  its  combat  mission. SUBSYSTEMS Many different subsystems are used aboard the various U.S. Navy ships. We will use the subsystems aboard some of the FFG-7 class ships as examples. Our description  is  basic  (without  security  compromise),  but it will give you a general idea of how the subsystems operate and how they are integrated with the rest of the combat system. SEARCH RADAR SUBSYSTEM The  search  radar  subsystem  provides  primary surveillance, detection, and tracking data for antiair warfare and anti surface ship warfare missions. The following  paragraphs  functionally  describe  the  combat system  radars,  radar  recognition,  and  search  radar repeaters.  Search  radars  include  Radar  Set AN/SPS-49(V)4  and  Radar  Set  AN/SPS-55.  Radar identification includes the Air Traffic Control Radar Beacon System/Identification Friend or Foe (IFF) Mk XII System (AIMS). The search radar repeaters consist of  three  AN/SPA-25  indicators. Search radar subsystem target information used to detect  air  and  surface  targets  is  provided  by two-dimensional search scans. This information is sent by the appropriate radar distribution switchboard to user consoles as video and sweep data. The interrogation sets, as part of the radar recognition equipment, send IFF data via the radar distribution equipment to the video decoders  and  the  beacon  video  processor. COMBAT  DIRECTION  SUBSYSTEM  (CDS) The combat direction system (CDS) subsystem is a digital computer-based data processing system that allows the crew to integrate, control, monitor, and make tactical use of the ship’s weapons systems. It also allows the use of task force weapons against air, surface, and subsurface  threats.  Sensor  data  from  radar,  sonar, countermeasures, and remote communication links are collected,   correlated,   and   evaluated   by   the   CDS operational  program.  The  CDS  program  then  develops and  sends  recommendations  and  alerts  to  the  console operators to enable them to use their sensor and weapon resources  efficiently.  The  CDS  is  composed  of  the following  major  equipment  groups: 1. CDS data processing group 2. CDS data display group 3. CDS data communications group 4-1






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