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Prerequisite: Basic ILS theory course or similar experience
Course is a one-week training course where the most important features of the
software will be discussed. The student will work through a number of training
exercises from known practical cases. The course will also serve as an advanced
ILS course for those who need a deeper understanding of the ILS behaviour in
adverse terrain. The course is based on the General
ILS theory course, and will give the student a good understanding of erratic ILS
behaviour and the effect of ILS signal propagation in different types of
terrain. The course will discuss antenna system design and present solutions for
installations and setting up in adverse terrain and multipath rich environment.
The course is aimed
at maintenance technicians having ILS as the main working area as well as ILS
instructors og specialists specifying, installing and inspecting systems. It is also an eye
opener for flight inspection crew, where it will enhance the understanding of
the signal in space versus adjustments and settings on ground.
At the end of this
course each student will be able to:
independent computer simulations for known antenna system in medium complexity
the possibilities and limitations for computer modelling and simulations.
flight inspection reports and thereby specify measures in order to enhance the
the effect of phase errors when making ground measurements in the near field.
what kind of foreign objects or construction that will have an impact on the ILS
signals and what will not. Hereunder specifying the necessary critical and
sensitive area for a given system based on the local conditions.
the design quality and estimate the expected performance of a system for a given
site in procurement or upgrade situations.
good site surveys and specify the optimum antenna system and location for
h. Make independent
designs of setting up procedures for all kind of ILS systems.
Course time table (changes can be suggested by users):
Day 1: Localiser (LOC). Performance analysis of single- and dual frequency
localisers. Principles of simulating antenna systems, wave propagation,
scattering objects, receiver and autopilots. ILS intercept procedures, autopilot
capture process. Some key points in ICAO ANNEX 10 & ARINC 710. Workshop in using
AXIS 110 for analysing localiser performance using orbits, approaches and the
proximity effect in the nearfield.
Day 2: The impact of antenna feed errors on the near field and far field
signals. Feed error stability testing. Correlation tests on monitor readings
versus signal in space. Student workshop. Definition of critical and sensitive
areas for ground movements and taxing aircraft. Airport modelling of buildings
and terrain obstructions to simulate the DDM bend structure and clearance due to
multipath. Workshop in making scattering object models. New developments in LOC
systems for future congested airports.
Day 3: Discussion on flight inspection procedures, signal processing and
approval criteria. Field measuring procedures. Simulation techniques - from site
survey to modelling the site. Working through a number of practical examples in
airport modelling. Analysing the results including simple and complex bend
Glide Path (GP). Performance analysis of single- and dual frequency glide path
systems. The effect of slopes in terrain, antenna feeds and mechanical alignment
of antenna system. The proximity effect in the nearfield. The impact of antenna
feed errors on the near field and far field signals. Correlation tests on
monitor readings versus signal in space. M-ARRAY clearance signal patterns,
capture effect in receivers. Workshop in using AXIS 330 on Null Reference and
Day 4: Airport modelling of buildings and terrain obstructions to
simulate the bend structure and clearance due to multipath. Discussion on flight
inspection procedures, theodolite and tracker location, signal processing and
approval criteria. Workshop with simulation techniques - from site survey to
modelling the site. Working through a number of practical examples. Modern
optimising techniques to get optimum signal quality on adverse sites. Using AXIS
330 for analysing glide path performance using vertical traces, level runs,
approaches and window diagrams.
Day 5: Definition of critical and sensitive areas for ground movements
and taxing aircraft. Building Restriction Areas. Working through a number of
practical examples in airport modelling. Provide some "ready made" "ready
simulated" results for specific problems on the quality and performance of LOC
and GP signal on space and how to correct them. Evaluation and handing out
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Nordic Air Navigation Consulting, Norway