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SURVEILLANCE/INFRASTRUCTURE DIVISION	ARN-300 PROJECTS
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ASDE Airport Surface Detection Equipment
ARSR-4 Air Route Surveillance Radar	This program will procure and systematically install 44 ARSR-4 radars (41 operational/2 DOD/1 training). These new radar systems either replace existing ARSR-1/2/3 or Fixed Position Surveillance (FPS) 20/60/90 series radars, or establish new sites along the periphery of the United States. The objective is to replace obsolete, maintenance intensive, joint-use surveillance system (JSS) radars for air traffic control and air defense purposes.
ATCBI Air Traffic Control Beacon Interrogator	This program will procure and replace the remaining inventory of air traffic control beacon interrogator (ATCBI) model 4’s and 5’s with secondary surveillance radar (SSR) detection equipment which meets current and future air traffic needs. These SSR’s will replace those ATCBI 4/5’s not replaced under the original Mode S Program.
LRR Improve Enroute Primary Radar Sustainment	This program will sustain aging ARSR-1/2/3 and FPS-20/60/90 radars to meet FAA surveillance requirements until the planned deactivation of primary en route radars begin (mid CY 2000). Planned improvements include upgrading the transmitter with solid-state components, rotary joint replacements, wave guide replacement, inter-cabinet wiring upgrades, power conditioning upgrades, and interior and exterior grounding upgrades
INFOSEC Information Security (NAS)	The NAS and NAS support includes communications, navigation, surveillance, avionics, traffic-flow management, air traffic control, and flight services, and related infrastructure. The NAS Information Security System (NISS) policy, standards, procedures, and technical capabilities will provide direction for the protection of an extremely diverse, complex, and open system architecture. NISS objectives and standards will be conveyed to integrated product teams as guidance for the protection of systems under development. NAS INFOSEC provides a system frame of reference for promoting mutual compatibility and effectiveness of information security measures across individual systems within the NAS, with appropriate uniformity across systems. As with all other NAS functionalities, the purpose of NAS information security is to promote the safe and expeditious movement of air traffic.
MODE-S Mode Select	A program designed to replace the existing Air Traffic Control Beacon Interrogators (ATCBIs) , primarily the ATCBI-3’s, but also a few ATCBI-4 and ATCBI-5 systems, with an enhanced surveillance information capability for use by Air Traffic Control. The Mode-S provides more accurate position information and minimizes interference through discrete interrogation of each aircraft. Through this ability to address each aircraft individually, the Mode-S provides a medium for digital data link for the exchange of information between aircraft, Air Traffic Controllers, and weather sources. In addition to improved secondary surveillance coverage, the Mode S "First Buy" architectural footprint was designed to provide a data link coverage capability coast-to-coast down to 12,500 feet mean seal level (MSL).
NIMS NAS Infrastructure Management System	The NAS Infrastructure Management System (NIMS) will provide a distributed management infrastructure to implement Airway Facilities future concepts of operations. The NIMS project will use a managed evolutionary approach that provides a three-tier architecture consisting of one National Operations Control Center (NOCC) and three Operations Control Centers (OCC). NIMS will provide a management and control capability to the NAS which will utilize technical resources more effectively. Products will include Monitoring and control processing subsystems, and new COTS/NDI processors and software, both of which will assist in the provision of the maintenance of the NAS and increased service delivery.
POWER SYSTEMS
PRM Precision Runway Monitor	Provides the capability to conduct simultaneous independent instrument flight rules (IFR) approaches to parallel runways spaced less than 4300 feet apart, thus increasing airport throughput, reducing delays, and improving fuel savings. Based on Congressional direction, the prototype radar at Raleigh-Durham airport was upgraded and commissioned. In addition, a production contract for the manufacture and installation of five E-Scan radars was awarded to Allied Signal.
ASDE/AMASS Surface Products	Radar monitoring of airport surface operations is required to aid in the orderly movement of aircraft and ground vehicles on the airport surface, especially during periods of low visibility such as rain, fog, and night operations. The Airport Surface Detection Equipment (ASDE-3) provides radar surveillance of aircraft and airport service vehicles at high activity airports. while the Airport Movement Area Safety System (AMASS), an add-on to ASDE-3 radar, will visually and aurally prompt tower controllers to respond to situations which might compromise safety. AMASS extends the capability of the ASDE-3 system.
ASR-9/ASR-11 Terminal Surveillance	Terminal surveillance radar is used by air traffic control personnel to detect, display, and control aircraft in the terminal area. Programs include Airport Surveillance Radars Model 7,8,9, and 11. (ASR-7/8/9/11) ASR-9: The ASR-9 primary radar system provides information on aircraft within 60 miles of the antenna. This information is typically transmitted over telephone-type lines to air traffic control facilities. The ASR-9 provides an analog signal to current automation equipment, and will provide a digital signal to the Standard Terminal Automation Replacement System (STARS). This radar is used at airports with high density traffic and has the ability to detect heavy precipitation. ASR-11: This is the FAA's next generation digital radar and is a replacement for the aging ASR-7, ASR-8, and associated beacon systems. The ASR-11 will provide analog data to current equipment and digital radar data to STARS equipment. The ASR-11 is a Non-Developmental Item (NDI) acquisition and is a joint procurement between the Department of Defense and the FAA. The prime contractor is the Raytheon Corporation. First delivery is scheduled for Stockton, California in late 1998.