MICROWAVE LANDING AND GUIDANCE SYSTEMS

AN/SPN-41A

The Telephonics AN/SPN-41A is an all weather, ship based, radio frequency landing guidance system that provides accurate azimuth and elevation data to aircraft as they approach the ship for a landing.

For over twenty-five years, Telephonics' landing systems have been an integral part of, and have played a critical role in, ensuring the safety of carrier based aircraft. To date, over 25 systems have been delivered to the U.S. Navy and deployed on the CV, CVN, LHA, and LHD class ships with an outstanding record of performance. The Telephonics AN/SPN-41A uses advanced microwave scanning beam technology providing very large guidance windows for incoming aircraft. This technology is also used to land NASA's Space Shuttles and is at the core of Telephonics' ground-based landing guidance systems for aircraft equipped with tactical instrument landing system receivers.

TILS II Receiver

The TILS II receiver, a high-speed microprocessor-based landing system receiver, provides a MILSTD-1553B bus interface to any aircraft. The bus transmits input (channel select, glideslope select and BIT) and output data (elevation angle, azimuth angle, flags, signal strength, receiver status and auxiliary messages). The TILS II is highly reliable, with a service life of over 5000 hours during a 20-year period. Our receivers use 10 RF channels that are multiplexed to provide 60 channel assignments. Precision distance measuring (DME) is an option that provides greater than 3m (10 ft) accuracy.

Telephonics receivers provide signals ranging from basic analog to complex digital signals analog signal driving HSI display, RS-232, Manchester bi-phase, ARINC 429, MIL-STD-1553B digital bus, etc.) based on customer specifications.

Telephonics receivers are in service in programs throughout the world: AN/ARA-63 for the U.S. Navy, Microwave Scanning Beam Landing System (MSBLS) Navigation Set and ground stations for NASA's Space Shuttle, TILS II for the Swedish Air Force Saab JAS-39 Gripen, with ground stations and the Finnish Air Force GS-2000 systems for their F/A-18 fleet.

TILS GS-2000 Microwave Scanning Beam Landing System

TILS GS-2000 incorporates microprocessor-based, state-of-the-art technology that reduces weight, improves reliability, expands capability and ensures logistic support. Telephonics Tactical Instrument Landing System GS-2000 (a collocated, pulse-coded, Ku-band ground station) is the latest addition to our successful scanning beam landing system family. Earlier models are operational with the Swedish and Finnish Air Forces. Similar systems (both split-site and collocated) are installed on U.S. Navy aircraft carriers and amphibious assault ships, U.S. Navy/Marine Corps air stations and NASA's Space Shuttle. TILS GS-2000 is a military qualified unit that combines localizer and glideslope functions into a single, easily transported and sited unit. It can also be installed in a split-site configuration, as with conventional instrument landing systems.

TILS GS-2000 incorporates antennas of sufficient aperture size for all conventional operations down to Category II minima, and provide accurate, wide-coverage, localizer/glideslope information that is highly resistant to siting and overflight effects. Telephonics ground station also provides clean, flyable glide paths from 2° up to 8°. Lower glideslope angles are appropriate for fixed wing operations, whereas higher angles are useful for STOL and helicopter operations.

TILS GS-2000 is a microprocessor- based ground station that is continuously self-monitored. It contains features such as adjustable, low-elevation angle cutoff and adjustable azimuth clearance. The TILS GS-2000 can receive commands and send status/messages to a remote terminal. It can also be coded to provide station identification, weather conditions, center line offsets, etc. A local maintenance port on the GS-2000 can be attached to a laptop loaded with Telephonics supplied software. This laptop computer can be used to query the system status, to assist in LRU level troubleshooting, to adjust azimuth or elevation coverage zones and electronic boresight.

AIR TRAFFIC CONTROL/AIR DEFENSE

AeroTrac

Telephonics' AeroTrac® Air Traffic Management System (ATMS) is an advanced en route and terminal automation system that features unparalleled radar capacity, tracking accuracy and flight information processing. Telephonics' AeroTrac has been proven in large scale Air Traffic Control (ATC) systems by tracking over 3,000 aircraft, simultaneously processing over thirty radar sensors and covering over nine million square miles of airspace.

AeroTrac provides precision tracking - especially for diverse configurations of multiple radars from various manufacturers, formats and scan rates. The AeroTrac system includes:

• Multi-radar Fusion Tracking (MRT)
• Flight Data Processing (FDP)
• Advanced Display Systems
• Simulation and Training.

AeroTrac II is fully scalable in capacity and control sectors and may be applied to a wide range of uses:

• Enroute Control
• Approach/Tower Control
• Area Surveillance. The sector controllers are presented with a uniform, real-time, integrated airspace picture regardless of the level of radar coverage. AeroTrac utilizes all available target sensing and reporting systems, including:
• Primary Surveillance Radar
• Secondary Surveillance Radar
• ADS/GPS
• Flight Plans.

The system provides automatic correlation between the flight data and radar data. AeroTrac incorporates redundant processors and fail-safe backup modes. The ATMS is modular in design so that new and enhanced features can be added to meet changing requirements throughout the system life cycle. All applications operate under COTS multitasking operating systems using an enhanced human-machine interface with graphical displays that incorporate Eurocontrol recommendations. AeroTrac II configurations are available to include:

• 2048 x 2048 Color LCD Displays
• Conflict Alert, Restricted Area Warning and Minimum Safe Altitude Warning
• Data Recording Systems
• Control and Monitoring Systems (CMS)
• Training/Simulation Systems
• Integration to Existing Surface MET Systems

The open system architecture may be scaled to suit the ATC application, from a small single sensor airport to a large area, multiradar control center. The AeroTrac II system may be hosted on a variety of UNIX operating system-based workstations, including Sun, HP, Intel and others.

The AeroTrac II system's modular design allows the system to be configured to suit any customer's operational requirements. The system may be configured in networked autonomous workstations or a distributed architecture.

SkySearch-2000M

Telephonics SkySearch-2000M combines our SkySearch 2000 Secondary Surveillance Radar (SSR) system background with our advanced military Monopulse Secondary Surveillance Radar (MSSR) technology to achieve superior target reporting for civil Air Traffic Control (ATC) applications. Our Identification Friend or Foe (IFF) and Secondary Surveillance Radar systems have been consistently providing military and civil air traffic controllers and battle management decision makers with high performance systems that efficiently and safely direct traffic, increase mission effectiveness and keep friendly forces out of harm's way. Telephonics systems are deployed at airports, on aircraft carriers and other surface vessels, on the world's fleet of AWACS aircraft, and in maritime patrol fixed and rotary wing platforms. Advances in technology and our ability to adapt military designs to meet civil ATC requirements have enabled Telephonics to provide a modular MSSR system in a redundant (2 channel) configuration. Telephonics USAF contracts to upgrade the AN/APX- 103C Airborne Early Warning IFF, the NATO AWACS Midterm Upgrade of the IFF to add ATC Mode S capability, as well as the upgrade of the USN Carrier Fleet ATC sensor extraction, represent an unparalleled technology baseline for the MSSR. SkySearch 2000M is clearly the next generation of MSSR systems with a core design concept of "adaptability through modularity and interface flexibility.