SENSORS, ELECTRONIC, AND INFORMATION WARFARE SYSTEMS
AAR-47 MAWS Missile Approach Warning System
Description: Employed on helicopters and transport aircraft, the AN/AAR-47 Missile Approach Warning System (MAWS) warns of threat missile approach by detecting radiation associated with the rocket motor and automatically initiates flare ejection. Detection algorithms are used to discriminate against non-approaching radiation sources. The AAR-47 is a passive, missile-
approach warning system consisting of four sensor assemblies housed in two or more sensor
domes, a central processing unit, and a control indicator. The Warning System provides attacking
missile declaration and sector direction finding and will be interfaced directly to the ALE-39/47
countermeasures dispenser. Without the AAR-47, helicopters and fixed-wing aircraft have no
infrared missile detection system.
Program Status: Full-Rate Production continues on the third production contract. The
Microprocessor Upgrade Program is currently in the testing phase, and production began in FY
1998. Limited follow-on production will begin in the third quarter of FY 1999 through FY 2003.
Description: This countermeasures dispenser system is designed to deploy electronic and infrared countermeasures in accordance with a program implemented by the aircrew. The
AN/ALE-47 provides the aircrew with a “smart” countermeasures dispensing system, allowing the
aircrew to optimize the countermeasures employed against anti-aircraft threats.
Program Status: This continuing joint program, with an Air Force lead, is in Full-Rate Production. The Navy will acquire 520 systems from FY 1998 to FY 2003.
Developer/Manufacturer: Tracor, Austin, Texas.
ALE-50 AAED Advanced Airborne Expendable Decoy
Description: This is an expendable towed decoy designed to provide countermeasures against semi-active radar-guided anti-aircraft threats, thereby increasing the survivability of tactical
aircraft. The AN/ALE-50 decoy is deployed when required and cut free before landing.
Program Status: In production. The ALE-50 Multi-Platform Launch Controller (MPLC) is being modified to be compatible with the Integrated Defensive Electronic Countermeasures (IDECM)
Description: The AN/ALR-67(V)3 is a radar warning receiver (RWR) designed to meet Navy
requirements through the year 2020. This is an upgrade to the ALR-67(V)2 system currently used
on F/A-18 Hornet, F-14 Tomcat, and AV-8B Harrier aircraft. It will enable Navy and Marine Corps
tactical aircraft to detect threat radar emissions, enhancing aircrew situational awareness and
Program Status: The V(3) program is currently in the Engineering and Manufacturing
Development phase and undergoing developmental and operational testing. An Operational
Assessment was completed with very positive results. Operational Evaluation will continue into
1999, with a Full-Rate Production scheduled for mid-1999. Production quantities for FY 1998
through 2003 will outfit the F/A-18C/D and the F/A-18E/F. The AN/ALR-67(V)3 requirements for
the F-14 Tomcat and the AV-8B Harrier aircraft are currently unfunded.
Developer/Manufacturer: Raytheon, Los Angeles, California.
APG-65 F/A-18 Hornet Radar Upgrade
Description: The two phases of the F/A-18 AN/APG-65 radar upgrade will continue through the end of this century. The Phase I upgrade will enhance performance in a hostile electronic
countermeasures environment, thereby expanding all-weather attack and multi-mode function
flexibility and increasing growth potential of the radar. Phase II will provide reconnaissance
capability and air-to-ground targeting through the use of synthetic aperture radar technology and
the development of improved hardware and software.
Program Status: Phase I and Phase II are currently in production.
Developer/Manufacturer: Boeing, St. Louis, Missouri; and Hughes, Culver City, California.
ATARS Advanced Tactical Air Reconnaissance System
Description: ATARS is a near-real-time, digital, high-resolution tactical reconnaissance system for the reconnaissance-configured F/A-18D. Combined with the synthetic aperture radar (SAR)
capability of the AN/APG-73 radar, ATARS will provide the F/A-18D with a reconnaissance
package capable of day/night, through-the-weather imaging electro-optic/infrared overflight and
long-range standoff SAR. ATARS passes data via the Common Data Link (CDL) to the Joint
Services Imagery Processing System (JSIPS) and the Marine Corps Tactical Exploitation Group
(TEG) for image processing and exploitation.
Program Status: ATARS has been approved for Milestone II, Engineering and Manufacturing
Development phase. Initial Operational Capability is scheduled for FY 1999. A total of 31 ATARS
suites are planned.
Developer/Manufacturer: Boeing, St. Louis, Missouri; Fairchild, Syosett, New York; Computing
Devices, Hastings, United Kingdom; and Lockheed Martin Infrared and Imaging Systems,
AVR-2 Laser Warning System
Description: The AN/AVR-2 Laser Warning System (LWS) for helicopter and transport aircraft
provides advance warning of laser energy directed against the aircraft, including both laser range
finders and laser guidance systems, enabling the aircrew to take evasive action.
Program Status: In Full-Rate Production.
Developer/Manufacturer: Hughes, Los Angeles, California.
ADS Advanced Deployable System
Description: ADS is a deployable, short-term, large-area undersea surveillance system currently under development. ADS is designed to detect nuclear-powered and quiet conventional (diesel-
electric and air-independent propulsion) submarines operating in shallow-water littoral operating
environments. The system will also have some capability to detect mine-laying activity and to
track surface contacts. ADS will consist of a Processing and Analysis Segment (PAS), which is
connected to the ADS sensor field by a shore cable and contained in reusable, transportable
vans; and the Underwater Segment (UWS), which is an expendable battery-powered, large-area
field of passive undersea surveillance arrays. ADS will provide threat location information directly
to tactical forces and a reliable maritime picture to the Joint Force Commander. It will be forward-
positioned in a standardized, modular ISO-van configuration to allow on-scene forces to deploy it
rapidly to areas where surveillance is needed to maintain undersea battlespace dominance. By
operating in an unobserved fashion, ADS can provide indications and warning of potentially
hostile maritime activity prior to commencement of hostilities. Existing Undersea Surveillance
System (USS) processing software and display formats will form the core of the ADS shore
signal-processing segment. Commercial Off-The-Shelf technologies and Non-Developmental
Items are being emphasized to maximize cost effectiveness.
Program Status: ADS is in the Program Definition and Risk Reduction phase, with a Milestone II
decision set for FY 1999. Existing tests with ADS-type arrays against challenging real-world
diesel-electric and nuclear-powered submarines have verified ADS’ capability to perform in
demanding littoral water regions.
Developer/Manufacturer: Lockheed Martin Division, Manassas, Virginia; Hughes, Mukilteo,
BLQ-10 ESM System Virginia Class Electronic Support Measures
Description: The BLQ-10 system, formerly called the Advanced Submarine Tactical ESM Combat System (ASTECS) RDT&E project, will be the advanced ESM system for the Virginia (SSN-774) class that will support operations in both the open-ocean environment and the complex littoral signals environment. It consists of signal receivers, displays, and advanced processing and analysis equipment. ESM provides detection, identification, and direction-finding for radar and communication signals emanating from ships, aircraft, submarines, and other emitters. ESM
equipment is used by attack submarines to aid in self-protection, situation awareness, and
intelligence-gathering for battle group support. Battle group dissemination of the information
gathered from these signals will be provided via the ship’s combat control system and
The SSN-774 class ESM suite is a minimally manned ESM system providing several critical
functions for radar and communications signals: detection, signal acquisition, identification,
localization, and threat warning to the combat system. It requires a surface-penetrating antenna
that can be located on the Photonics or ESM mast. The Virginia class ESM system is being
considered for eventual back-fit into Seawolf (SSN-21) and improved Los Angeles (SSN-688I)-class submarines.
Program Status: The SSN-774 class ESM System entered Engineering and Manufacturing Development in October 1994. The Engineering Development Models are scheduled to undergo at-sea operational assessment in late FY 1999 or early FY 2000.
Developer/Manufacturer: Lockheed Martin, Syracuse, New York.
BQQ-10 A-RCI Acoustic Rapid COTS Insertion
Description: Acoustic Rapid Commercial Off-The-Shelf Insertion (A-RCI), designated AN/BQQ-10, is a four-phase program for transforming existing submarine sonar systems (AN/BSY-1,
AN/BQQ-5, and AN/BQQ-6) from legacy systems to a more capable and flexible COTS/Open
System Architecture (OSA) and also provide the submarine force with a common sonar system. A
single A-RCI Multi-Purpose Processor (MPP) has as much computing power as the entire Los
Angeles (SSN-688/688I) submarine fleet combined and will allow the development and use of
complex algorithms previously beyond the reach of legacy processors. The use of COTS/OSA
technologies and systems will enable rapid periodic updates to both software and hardware.
COTS-based processors will allow computer power growth at a rate commensurate with the
Program Status: Phase I (November 1997) targeted Towed Array Processing; Phase II (FY 1999)
provides additional Towed and Hull Array software and hardware; Phase III (FY 2000) replaces
current Spherical Array DIMUS beamformer with a linear beamformer; and Phase IV (FY 2000)
upgrades HF sonar on late-generation, Improved Los Angeles-class submarines (SSN-688I).
Each phase installs improved processing and workstations (point and click, trackballs, Windows).
Navy research, development, test, and evaluation will continue to adopt algorithms from the
surveillance, tactical and advanced R&D communities, perform laboratory and at-sea testing, and
distribute upgrades periodically.
Description: The AN/BSY-2 Submarine Combat System improves upon existing combat systems to meet the expanded operational requirements of the Seawolf (SSN-21)-class attack
submarines. The BSY-2 is a fully integrated system used for sonar tracking, monitoring, and
launch of all on-board weapons, including Mk 48 ADCAP/ADCAP MOD torpedoes, Tomahawk
missiles, and mines. It provides improved overall response time, operability, tactical
reconfiguration, firepower, and availability. Significant advancements include the hull-mounted
Wide Aperture Array (WAA) for rapid localization of targets, more than 3.1 million unique software
lines of code developed in Ada, a 92-processor node flexible architecture called “FLEXNET”
using fiber-optic technology, and a fully integrated Interactive Electronic Technical Manual (IETM)
supporting on-board and shore-based maintenance, operations, and training.
Program Status: Three systems were procured, with the first delivery to the USS Seawolf (SSN-
21) in February 1995 and the second delivery to Connecticut (SSN-22) in October 1997. The
BSY-2 system completed initial testing on Seawolf in the summer 1996 and was delivered to the
Navy in summer 1997. The third system will be installed on Jimmy Carter (SSN-23), currently
under construction by General Dynamics Electric Boat Corporation (see separate summary for
the SSN-21 Program).
Developer/Manufacturer: Lockheed Martin, Syracuse, New York.
CCS Submarine Combat Control System
Description: There are three versions of CCS: CCS Mk 1, BSY-1, and CCS Mk 2. The latest
upgrade to CCS Mk 1 and BSY-1 is Program C4.2V2A, which provides Sturgeon (SSN-637)- and
Los Angeles (SSN-688 and 688I)-class submarines with an upgraded shallow water variant of the
Mk 48 ADCAP torpedo. Additional capabilities are Tomahawk Block III, an interface to Acoustics
Rapid COTS (A-RCI) upgrades, and an interface to the Global Command and Control System-
Maritime (GCCS-M), formerly called the Joint Maritime Command Information System (JMCIS).
CCS Mk 2 Block 1 is a phased development program that provides significant warfighting
improvements to SSN-688, SSN-688I, and SSBN-726 class submarines. The first phase, Block
1A/B, provided shallow-water ADCAP torpedo capability as well as interfaces to GCCS-M and the
Advanced Tomahawk Weapon Control System (ATWCS). Both GCCS-M and ATWCS are
Government Off-The-Shelf products developed by other Navy program offices (see separate
program summaries). CCS MK2 Block 1C, planned for fleet introduction at the end of FY 1999,
forms the basis of a common Integrated Development Plan (IDP) between SSN-688, SSN-688I,
and the Virginia (SSN-774) classes of submarines. This common IDP will ultimately incorporate
common Tactical Tomahawk, Improved Submarine-Launched Mobile Mine (ISLMM), and
improved ADCAP capabilities across all submarine platforms, as well as updates to GCCS-M and
Program Status: Program C4.2V2A installations have begun and are expected to complete in FY
1999 for all CCS Mk 1 and AN/BSY-1 systems. CCS Mk 2 Block 1A/B successfully completed two
dockside installations and Operational Evaluation in the third quarter of FY 1997. The next
upgrade to CCS Mk 1, BSY-1, and CCS Mk 2 Block 1A/B will be CCS MK 2 Block 1C. CCS Mk 2
Block 1C Milestone II was completed in the third quarter FY 1996. Planned installations to
support development and operational testing are on schedule for FY 2000.
Description: FDS-C is a developmental, Commercial Off-The-Shelf version of the existing FDS
system, a long-term, passive acoustic fixed surveillance system. Both consist of a series of arrays
deployed on the ocean floor in deep-ocean areas, across straits and other chokepoints, or in
strategic shallow-water littoral areas. Both also comprise two components: the Underwater
Segment (UWS) that performs the detection, and the Shore Signal and Information Processing
Segment (SSIPS) that handles the processing, display, and communication functions.
The FDS program was canceled in 1993 following the deployment of the Engineering
Development Model, designated FDS-1. FDS-1 is an operational fleet asset. FDS-C was
developed following the cancellation of FDS by taking advantage of advances made in
commercial industry that will provide a much more cost-effective FDS-caliber system to meet the
Fleet’s ongoing needs for long-term undersea surveillance.
FDS-C will provide threat location information to tactical forces and contribute to the reliable
maritime picture of the Joint Force Commander. It will be deployed in strategic locations where
surveillance is needed to maintain undersea battlespace dominance. Due to its strategic
positioning and long lifetime, FDS-C can provide indications and warning of hostile maritime
activity prior to hostilities. Development of the all-fiber-optic hydrophone passive array will
increase system reliability and performance and also reduce costs.
Program Status: System testing and evaluation is complete. The next generation of underwater
systems (FDS-C) is in the design verification and source-selection stage of development.
Description: SOSUS is a broad-area, fixed, passive undersea surveillance system that continues
to provide a critical element of the Integrated Undersea Surveillance System (IUSS). It comprises
a series of hydrophone sensors placed on the ocean floor and connected to shore facilities where
the acoustic data are received, processed, and reviewed by an acoustic analyst. SOSUS reports
surface ship activity and supports anti-submarine warfare command and tactical forces by
detecting, classifying, tracking, and reporting submarine activity. Additionally, SOSUS provides
support — on a not-to-interfere basis — on dual-use areas such as global warming, seismic
activity, marine mammal research, and fisheries law enforcement.
Program Status: SOSUS has transitioned from single-beam paper displays to computer-based
workstations for acoustic data analysis. Installation of the Shore Signal Information Processing
Segment (SSIPS) and Surveillance Direction System (SDS) was completed at all shore facilities
during FY 1998, giving SOSUS a common equipment configuration and significantly reducing
system infrastructure support costs.
Developer/Manufacturer: Lucent, Greensboro, North Carolina. SSIPS/SDS: Lockheed Martin,
TB-29 Submarine Thin-line Towed Array
Description: The TB-29 submarine thin-line towed array is a Commercial Off-The-Shelf version of
the legacy TB-29 towed array. These arrays will be used for back-fit on Los Angeles (SSN-688
and SSN-688I) submarines and forward-fit on the Virginia (SSN-774) class. Compared with the
legacy array, the TB-29 uses COTS telemetry to significantly reduce the unit cost while
maintaining equivalent array performance.
Program Status: Technical and Operational Evaluations are scheduled for FY 2001. The first
three arrays will be delivered to the Fleet in FY 2002.
Developer/Manufacturer: To be determined.
AIEWS Advanced Integrated Electronic Warfare System
Description: The Advanced Integrated Electronic Warfare System (AIEWS) is the Navy’s next-generation shipboard electronic warfare (EW) system. AIEWS will incorporate an open
architecture that will allow modern technology insertion and facilitate use of Commercial Off-The-
Shelf systems and Non-Developmental Items. The system is designed for layered and
coordinated countermeasures in the littoral operational environment, with special emphasis on
the full integration of all soft-kill elements into the ship’s anti-air warfare systems. AIEWS will be
developed in two increments. Increment I will include the open system architecture, advanced
Electronic Support (ES) that includes Precision Electronic Support Measures (PESM) and
Specific Emitter Identification (SEI), combat system integration, introduction of an advanced
display system, and integration of the Nulka self-defense decoy system (see separate program
summary, below). Increment I will also provide increased tactical awareness and earlier threat
detection, and will support combat identification with its SEI capability. Increment II will include
installation of advanced on-board radio-frequency and infrared countermeasures. AIEWS will be
forward- and back-fit into Aegis cruisers and destroyers, LPD-17 and other amphibious ship
classes, aircraft carriers, and the DD-21.
Program Status: AIEWS received additional funding in FY 1996 for risk reduction and engineering
acceleration. The Increment I (Advanced ES) contract was awarded in early FY 1998. AIEWS
Initial Operational Capability is expected in 2002.
Description: Combat DF Block 0 (AN/SRS-1) is an electronic support, signal acquisition, and direction-finding system providing warship commanders near-real-time indications and warning, situational awareness, and cueing information for targeting systems. Combat DF greatly improves on existing “Outboard” system technology by providing greater flexibility against a wider range of threat signals and increased reliability at lower cost through use of Commercial Off-The-Shelf
workstations. The Block 1 (SRS-1A) system will incorporate the Automated Digital Acquisition
Subsystem (ADAS) upgrade enabling exploitation of unconventional and low-probability-of-
intercept (LPI) signals.
Program Status: Block 1 is now in Full-Rate Production and is being installed during new ship construction on Wasp (LHD-1) and Arleigh Burke Flight II (DDG-72 and follow-on)-class ships. Block 1 systems are also being installed as back-fits on in-service LHDs and DDG-51s. The Block 1 system will eventually outfit seven LHDs, 35 DDG-51 Flight IIs, and three shore sites. Beginning in FY 2000, Combat DF will be superseded by the Cooperative Outboard Logistics Update (COBLU) Phase 1 system during construction of DDG-51 class destroyers. COBLU will provide
an even greater level of capability for processing modern signal modulations.
Developer/Manufacturer: Lockheed Martin, Nashua, New Hampshire.
IPDS CBR Defense Improved Point Detector System
Description: The IPDS will extend the CBR (Chemical, Biological, Radiological) capabilities of the
Chemical Agent Detector installed on Navy ships by adding an automatic nerve and blister agent
vapor detector and alarm system. A key feature is an expandable agent recognition library with
the ability to exclude interference and reduce false alarms.
Program Status: The program achieved Milestone III in July 1995, and the production contract
was awarded in October 1996. First-article testing was completed in December 1998. Production
deliveries are scheduled to begin in mid-FY 1999, with an inventory objective of 235 systems.
Funding for this program was shifted from Navy to Department of Defense accounts.
Developer/Manufacturer: Powertronic Systems, Inc., New Orleans, Louisiana.
IRST Infrared Search and Track
Description: The Infrared Search and Track (IRST) system will provide automatic surveillance,
detection, tracking, and threat declaration of low-altitude, anti-ship cruise missiles (ASCMs) at
tactically significant ranges to support ship self-defense. IRST complements existing self-defense
systems, and improves combat system detection capability during conditions that degrade radar
performance (e.g., jamming, environmental ducting). The system provides passive warning
against low-radar cross-section ASCMs and aircraft by detecting infrared radiation and deriving
target azimuth/elevation data. It then transmits it to the ship’s combat system, with auto-acquisition of the target by cueing other sensors.
Program Status: The contract was awarded for production of an FY 1998 demonstration model.
At-sea demonstrations will complete in FY 1999. Follow-on engineering manufacturing and
development is scheduled to begin in FY 1999. Completion of development/testing and Initial
Operational Capability are expected in FY 2003.
Developer/Manufacturer: Lockheed Martin, Orlando, Florida; and Raytheon Systems, El
MFR Multi-Function Radar
Description: The Multi-Function Radar is an X-band active phased array radar designed to meet
all horizon search and fire control requirements for the 21st-century fleet. MFR is designed to
detect the most advanced low-observable anti-ship cruise missile (ASCM) threats and support
fire-control illumination requirements for the Evolved Sea Sparrow Missile, Standard Missile, and future missiles required to support engagement of the most stressing ASCMs. MFR also supports new ship design requirement for reduced radar cross-section, reduced manning and total
ownership cost reduction. MFR is planned for introduction in CVN-77/CVNX and DD-21 warships.
Program Status: Currently undergoing concept development and risk reduction with final selection
of a developer/manufacturer in late FY 1999. Development, testing, and subsequent production
will support equipment delivery schedules for both CVN-77 and DD-21. Initial Operational
Capability is expected in 2008 with the delivery of DD-21.
Developer/Manufacturer: To be determined.
Nulka Decoy System
Description: Nulka is an active, off-board, ship-launched decoy being developed in cooperation
with Australia to counter a wide spectrum of present and future radar-guided anti-ship cruise
missiles (ASCMs) assessed to have passive rejection capabilities. The Nulka decoy employs a
broadband radio frequency repeater mounted atop a hovering rocket platform. After launch, the
Nulka decoy radiates a large, ship-like radar cross-section while flying a trajectory that seduces
and decoys incoming ASCMs away from their intended targets. Australia is developing the
hovering rocket, launcher, and launcher interface unit. The Navy is upgrading Nulka with an
improved payload to reduce cost and modifications to the fire control system to reduce the
system’s overall weight. The existing Mk 36 Decoy Launching System is being modified to
support Nulka decoys.
Program Status: Development is scheduled to proceed through Milestone III for Full-Rate
Production in FY 1999; installation on most U.S. and Australian surface warships and amphibious
ships is to begin in late FY 1999.
Developer/Manufacturer: AWA, Australia; and Sippican, Marion, Massachusetts.
Description: SALAD is an automatic, exterior liquid CBR (Chemical, Biological, Radiological)
agent detection and monitoring system that will detect and alarm in the presence of liquid nerve
and blister agents. SALAD consists of a detector unit that uses chemically treated paper, optical
scanners, a central processing control unit, and automatic alarms in key shipboard locations. This
device replaces manual methods that could expose personnel to the hazards of liquid chemical
Program Status: SALAD completed Operational Test and Evaluation in June 1998. A Limited-Rate Initial Production decision for eight units was issued in September 1998, with an inventory
objective of 255 systems. Research, development, and acquisition funding for this program was
shifted from Navy to Department of Defense accounts.
Developer/Manufacturer: To be determined.
SLQ-32A Electronic Warfare System
Description: An integral component and an effective asset in the Navy’s Ship Self-Defense System (SSDS, see separate program summary), the AN/SLQ-32A Electronic Warfare System comprises three modular versions with increasing levels of complexity and capability. The SLQ-
32A(V)1 provides warning, identification, and direction-finding of incoming anti-ship cruise missile
(ASCM) terminal-guidance radars. The (V)2 adds early warning, identification, and direction-
finding against the targeting radars associated with these ASCMs. The (V)3 adds a jamming
capability against the targeting and ASCM terminal guidance radars. Variations of these three
SLQ-32A systems have been installed on aircraft carriers — the V(4) — and Oliver Hazard Perry
(FFG-7)-class guided missile frigates — the V(5).
Program Status: More than 200 SLQ-32 systems are installed on U.S. ships as of FY 1998. The
system will eventually be replaced by the Advanced Integrated Electronic Warfare System
(AIEWS, see separate program summary), but it is expected to remain in the Fleet through 2015.
Developer/Manufacturer: Naval Research Laboratory, Washington, D.C.; Naval Surface Warfare
Center, Dahlgren, Virginia, and Crane, Indiana; and Raytheon, St. Petersburg, Florida.
SPQ-9B Radar Improvement Program
Description: This program uses Commercial Off-The-Shelf systems and Non-Developmental
Items to improve the performance of the AN/SPQ-9 Radar in the Mk 86 Gun Fire Control System
(GFCS), which will be integrated into the Mk 1 Ship Self-Defense System (SSDS, see separate
program summary). It comprises a variety of upgrades for search radar equipment to meet the
evolving threat, and will provide anti-ship missile defense capability for surface combatants. 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, and will maximize the use of existing in-service equipment and COTS/NDI
items, with no degradation of basic Mk 86 GFCS operation.
Program Status: The design, fabrication, and testing of an Advanced Demonstration Model
(ADM) of the SPQ-9B by the Naval Research Laboratory have eliminated all serious technical
risk. Initial performance testing of the ADM was completed at Wallops Island prior to a successful
operational assessment conducted by the Self-Defense Test Ship during 1995. A preliminary
design review was accomplished FY 1996. Development for Mk 86 and SSDS interfaces is in
progress. A contract for two SPQ-9B Ordnance Alteration kits was awarded in June 1997. First
Production Proof Kits were delivered in late 1997, and Milestone III decision and Initial
Operational Capability are planned for FY 2000. Independent Research and Development of a
lightweight antenna is in progress with land-based testing scheduled for FY 2000.
Developer/Manufacturer: Northrop Grumman, Melville, New York.
SPY-1 Aegis Multi-function Phased Array Radar
Description: The AN/SPY-1 radar system is the primary air and surface radar for the Aegis Combat System installed in the Ticonderoga (CG-47) and Arleigh Burke (DDG-51)-class warships. It is a Multi-function, phased array radar capable of search, automatic detection, transition to track, tracking of air and surface targets, and missile engagement support. The third variant of this radar, AN/SPY-1D(V), known as the Littoral Warfare Radar, will improve the radar’s
capability against low-altitude, reduced radar cross-section targets in heavy clutter environments
and in the presence of intense electronic countermeasures. The radar has also demonstrated a
capability to detect and track theater ballistic missiles.
Program Status: Three versions of the radar have been delivered: CG-47 through CG-58 are equipped with the SPY-1A radar; CG-59 through CG-73, with the SPY-1B; and the DDG-51 class
with the SPY-1D. The SPY-1D(V) littoral radar upgrade superceded the SPY-1D in new-
construction Flight IIA destroyers beginning in FY 1998.
Developer/Manufacturer: Lockheed Martin, Moorestown, New Jersey.
SQQ-89 Anti-Submarine Warfare Combat System
Description: The AN/SQQ-89 ASW combat system suite provides Oliver Hazard Perry (FFG-7),
Spruance (DD-963), Ticonderoga (CG-47), and Arleigh Burke (DDG-51) surface warships with an
integrated undersea warfare detection, classification, display, and targeting capability. The
system combines and processes all active sonar information, and processes and displays all SH-
60B Light Airborne Multi-Purpose System (LAMPS) Mk III sensor data. The current system
comprises following subsystems:
AN/SQS-53C/D active/passive hull-mounted sonars (SQS-56 in FFGs)
SQR-19 Tactical Towed Array System (TACTAS)
Mk 116 ASW fire control system
AN/SQQ-28 sonobuoy processor
AN/SRQ-4 SH-60B helicopter data link
AN/UYQ-25B Sonar In-situ Mode Assessment System (SIMAS)
AN/USQ-132 Tactical Display Support System (TDSS)
AN/SQQ-89( )-T On-Board Trainer (OBT)
The analog receivers of the AN/SQS-53A/B hull-mounted sonars are being upgraded to digital by
the use of Commercial Off-The-Shelf (COTS) processors, and are redesignated SQS-53D.
Planned improvements through block upgrades include:
SH-60R (LAMPS Mk III Block II) integration
Multi-Function Towed Array (MFTA) that will provide low and mid-frequency bi/multi-static
capability between the SQS-53C/D, the SH-60R Airborne Low-Frequency Active Sonar (ALFS),
and off-board systems
Remote Mine-hunting System (RMS) processing and display
Echo Tracker Classifier (ETC) active classification capability
Computer-Aided Dead-Reckoning Table (CADRT)
Torpedo Recognition and Alertment Functional Segment (TRAFS)
Launched Expendable Acoustic Decoy (LEAD) to provide torpedo defense capability
Program Status: New system acquisitions are for Arleigh Burke (DDG-51) procurements.
Required modernization of existing systems for shallow-water littoral warfare environment are
being accomplished by COTS adjunct processors and displays. Starting in FY 2003, SQQ-
89(V)15+MFTA systems will be procured for back-fit installations in DDG-51 warships.
Developer/Manufacturer: Lockheed Martin, Syracuse, New York.
TISS Thermal Imaging Sensor System
Description: The Thermal Imaging Sensor System (TISS) will provide surface ships with a
day/night, high-resolution, infrared (IR) and visual imaging, and laser range-finder capability to
augment existing optical and radar sensors, especially against small boats and floating mines.
Twenty-four TISS units will be procured in a Non-Developmental Item program. Units will be used
in a rotating pool, transferred from ship to ship in operational
theaters, much like the Navy Mast-Mounted Sight System. The program was expanded to include
permanent installation of designated new-construction ships.
Program Status: The program received Milestone II approval and contract award in October
1995. A single test unit was procured for test and evaluation in FY 1996. The Milestone III
production decision was approved in December 1996 for five Low-Rate Initial Production units.
Initial Operational Capability was achieved in FY 1998. A total of 24 units are under contract to
support installations in destroyers and frigates expected to be deployed with the Navy’s Fifth
Fleet operating forces.
Developer/Manufacturer: Boeing, Huntington Beach, California.
ULQ-20 BGPHES-ST Battle Group Passive Horizon Extension System-Surface Terminal
Description: The Battle Group Passive Horizon Extension System-Surface Terminal (AN/ULQ-20)
extends the battle group’s line-of-sight sensor horizon and enhances joint interoperability by
controlling remote receivers in an aircraft’s sensor payload to relay sensor data to the ship’s
surface terminal via the Common High Bandwidth Data Link (CHBDL). BGPHES is interoperable
the Air Force’s U-2 reconnaissance aircraft and will operate with all future airborne
reconnaissance platforms that have a Common Data Link (CDL).
Program Status: Installation of the first five production systems has been completed.
UQQ-2 SURTASS/Twin-Line Array Surveillance Towed Array Sensor System
Description: The SURTASS capability consists of a mobile fleet of eight ships that employ the
Fleet’s finest deep- and shallow-water (littoral zone) passive acoustic sonar systems. These ships
provide passive detection of quiet nuclear and diesel submarines and real-time reporting of
surveillance information to theater commanders. For passive sensors, they employ either a long-
line passive sonar acoustic array or a shorter twin-line passive sonar acoustic array.
Twin-line is the only operational shallow-water towed array and the only multi-line towed array in
the Navy. It consists of a pair of arrays towed side-by-side from a SURTASS ship and offers
significant advantages for undersea surveillance operations in the littoral zone. It can be towed in
water as shallow as 180 feet, provides significant directional noise rejection, offers bearing
ambiguity solution without turning, allows the ship to tow at higher speed, and results in a shorter
time to steady out after a turn.
Program Status: The twin-line Engineering Development Model is currently installed on the USNS
Assertive (T-AGOS-9), and the first production model has been installed on the USNS Bold (T-
AGOS-12). Funding for six additional twin-line arrays is provided in the FY 2000 FYDP.
Developer/Manufacturer: Johns Hopkins University/APL, Laurel, Maryland; IUSS Operations
Support Center, Norfolk, Virginia; and Raytheon, Fullerton, California.
UQQ-2 SURTASS/LFA/T-AGOS-23 Surveillance Towed Array Sensor System,
Low Frequency Active
Description: The LFA system, the active adjunct to the SURTASS sonar system, is capable of
making long-range detections of submarine and surface ship contacts. It consists of a low
frequency active sonar transmitter hung below a SURTASS ship and uses the SURTASS passive
towed array as the receiver. Other Navy ships with towed arrays and with the SURTASS
processing system can also process the LFA signal returns in what is known as a “bi-static ”
mode. As a mobile system, SURTASS/LFA can be employed as a force-protection sensor
wherever the force commander directs, including in forward operating areas or in support of battle
group activities. A UHF SATCOM communication system provides direct voice and data
connectivity between the SURTASS/LFA ship and tactical platforms.
Only one LFA system exists, and it is installed on board the leased RV Cory Chouest. This ship
will be retired at some point after the USNS Impeccable (T-AGOS-23) becomes operational in FY
2001. T-AGOS-23 is a Small Waterplane Area Twin Hull (SWATH) ship that is much larger than
the existing T-AGOS-19 class SURTASS SWATH ships and is thus capable of carrying the
additional weight of the LFA system. Development continues for future LFA-type active systems
employing smaller, lighter sources (e.g., Compact LFA) in support of possible future deployment
from existing surface platforms.
Program Status: LFA Engineering Development Model installed aboard RV Cory Chouest. Impeccable (T-AGOS 23) will deliver in FY 2000 and becomes operational in FY 2001. LFA follow-on system development continues through the FY 2000 FYDP.
Developer/Manufacturer: Raytheon, Fullerton, California; Lockheed Sanders, Manchester, New
Hampshire; and Alpha Marine, Galliano, Louisiana.