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Thales navaids, air navigation, VOR, DVOR, ILS, DME, NDB, rdc



VOR, DVOR and DME Navaids

VOR 431 (VHF Omnidirectional Range)
VOR 431 (VHF Omnidirectional Range)
VOR is the standard internationally recognised short-range en-route navigation aid providing the pilot with azimuth information.
Thales' Conventional VOR (CVOR 431) and Doppler VOR (DVOR 432) systems are the result of 50 years of continuous development of VOR systems throughout the world. This gives enhanced performance and reliability as well as simplified maintenance and lower life cycle costs. The CVOR 431 has similarities with the DVOR 432 allowing customers to further minimize support costs. The DVOR 432 system offers increased performance over the CVOR for demanding locations.
DVOR 432 (Doppler VHF Omnidirectional Range)
DVOR 432 (Doppler VHF Omnidirectional Range)
VOR is the international standard for short-range navigation providing the bearing information to the pilot from a reference point.
This system can be configured to meet specific customer requirements such as mountaintop installation or use of alternative power sources such as solar energy.
The DVOR 432 system offers improved performance for demanding locations, e.g. with unfavourable terrain conditions (multipath effects), owing to a wide-aperture antenna system and utilization of the Doppler effect.
DME 415/435 RPM (Distance Measuring Equipment)
DME 415/435 RPM (Distance Measuring Equipment)
Distance Measuring Equipment (DME) provides pilots with distance information between the aircraft and the ground station. It is the international standard for medium range air navigation operating in the frequency range around 1000 MHz.
DME basically includes a ground beacon and an interrogator-receiver aboard aircraft.
The Thales DME 415 (low power, 100 Watt) and the DME 435 (high power, 1kW) are high-capacity systems that can handle over 200 aircraft interrogators simultaneously. They can also be used in conjunction with either ILS, MLS or VOR.

ILS and MLS Landing Systems

ILS 420 (Instrument Landing System)
ILS 420 (Instrument Landing System)
ILS is an indispensable aid to approach and landing especially under poor visibility conditions.
The system provides pilots with reliable and accurate landing information particularly in reduced visibility conditions to enable guidance during approach, landing and roll-out.
The majority of the Instrument Landing Systems in the world presently certified for operations according to the requirements of ICAO Cat. II and III have been supplied by Thales. The ILS 420 can also be combined with a variety of localizer and glide path antenna systems.
MLS 480 (Microwave Landing System)
MLS 480 (Microwave Landing System)
MLS can either supplement or be an alternative to ILS.
MLS is designed for the highest level of signal accuracy and stability which due to airport layouts cannot be achieved with ILS. MLS functionality permits an increased frequency of landings under Cat. III conditions. MLS is an aviation approach and landing system providing most accurate and reliable information for safe landings.
This system overcomes possible limitations with the ILS.

Satellite Navigation System

The DGPS Reference Station is the ground-based augmentation system for satellite navigation.
Thales is totally committed to programmes such as: EGNOS, GALILEO, Ground-Based Augmentation Systems (GBAS) and Local Area Augmentation Systems (LAAS for the US FAA.
Thales is positioned as an industrial partner and “service developer” for these strategic programmes. Today, one of the company's major satellite navigation activities is the ground-based infrastructure for civil aviation applications using the Global Navigation Satellite System (GNSS).
Thales can offer a complete range of local and regional augmentation services and products.

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