INTEGRATED MISSION SOLUTIONS DD(X ... - Raytheon

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DD(X) (continued) The Integrated Undersea Warfare System (IUSW) provides DD(X) with undersea dominance. Using hullmounted and towed acoustic sensors operating over two frequency bands, IUSW integrates acoustic, environmental and radar data to address the Anti-Submarine Warfare (ASW), In-Stride Mine Avoidance (ISMA) and Torpedo Defense (TD) missions. While IUSW uses the latest in sensor and electronic technologies, the greatest technical challenge is to reduce crew levels for DD(X) while improving sonar performance. To meet this challenge, IUSW uses the open architecture of the DD(X) Total Ship Computing Environment (TSCE) to implement advanced signal processing, using state of the art techniques in automation, environmental adaptation and human-system interface. Highly advanced automation is needed to continually search for undersea threats. The large undersea battlespace and the varied threats require searching many acoustic beams over multiple frequency bands, searching for various acoustic signatures. Enhancing automation techniques improves sonar performance while significantly reducing the number of steps a sonar operator must take to search the ocean environment for threats. IUSW incorporates automated detection, classification and localization (DCL) for each acoustic sensor to minimize false 12 summer 2003 Integrated Undersea Warfare System Conceptual images of the Integrated Undersea Warfare System’s sensor arrays mounted in the DD(X) bow below the waterline. alarms and eliminate false dismissals of valid targets. Data fusion automatically correlates acoustic sensors and integrates data from non-acoustic sensors to further enhance localization and classification performance. Environmental adaptation dynamically adjusts for the ever-changing acoustic environment in the ocean. These environmental changes dramatically affect acoustic propagation, and, if not accounted for, will significantly degrade sonar performance. IUSW automatically monitors the ocean’s acoustic conditions and assesses environmental data. Using acoustic and non-acoustic sensors to gather information, IUSW models the surrounding ocean environment for acoustic propagation, then uses this data to set up the sonar for optimum performance and to alert the operator to the current acoustic scenario. The Human-System Interface (HSI) provides operators with the information needed to respond quickly to acoustic events. An operator must be alerted, review the sensor information, assess the situation and take action for each potential threat. With the large undersea battlespace and multiple missions, an operator cannot review all of the data needed to keep track of the entire battlespace. HSI techniques will reduce the workload for the operators. IUSW uses next-generation sonar displays to provide for mission planning, automated alerts, evaluation tools, intelligent agents and decision aids for the operator. Historically, up to ten operators have been required to handle all of the IUSW missions – ASW, ISMA and TD. By using state-of-the-art techniques in automation, environmental adaptation and HSI, IUSW reduces the operations needed to conduct these missions by 80% while improving sonar performance. These techniques allow two sonar operators to control the entire IUSW suite at peak performance while simultaneously responding to demanding undersea tactical situations. ■ – Tom McHale
Total Ship Computing Environment The Total Ship Computing Environment integrates all DD(X) warfighting and peacetime operations into a common enterprise computing environment. Total Ship Computing Environment (TSCE), which was defined and established as part of the transformational vision for DD(X), is a revolutionary concept that integrates all of the war-fighting and peacetime operations of a surface combatant into a common enterprise computing environment. The TSCE also extends ashore to encompass the maintenance, logistics, and training functions that support the deployment of the DD(X). At its core, TSCE defines the computational characteristics of a 21st century surface combatant, integrating the Combat System with the Command, Control, Communications and Computers/Intelligence Surveillance and Reconnaissance (C4/ISR) functions on a common resource infrastructure. The TSCE is an open system, designed to meet all current and future missions based on evolving DD(X) operational requirements and concepts. The TSCE architecture achieves these goals through a combination of strategies including: • Integration of warfare domains in a multi-dimensional system with a common presentation and human interface • Managed distribution of processing • System-wide implementation of standards-based COTS computing technologies • Integrated system views of functional capabilities • Adoption of advanced human systems technologies for optimal manning • Use of standards for interconnection of and interoperation among components • Use of commercial best practices for publicly visible services and application programing Interfaces (APIs) The detailed TSCE can be viewed from two different perspectives. First is the physical TSCE that includes the processing, network, and presentation hardware, which are incorporated into the DD(X). This hardware environment hosts the ship’s functions, forming a pool of managed computing resources. Most of these computing resources are Commercial Off The Shelf (COTS) commodities. The second perspective comprises the TSCE software, which is what really sets DD(X) apart from its predecessors. The TSCE software environment is a service-based architecture where each element of the software environment (infrastructure and applications) is treated as a service provider to the system. At the lowest level, a service equates to a single software object that resides in Continued on page 14 summer 2003 13
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