national aviation university institute of air navigation air navigation systems department 1...
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NATIONAL AVIATION UNIVERSITYInstitute of Air navigation
Air Navigation Systems Department
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Graduate workMASTER’S DEGREE THESIS
« Using of surveillance systems for increasing aerodrome capacity»
«Використання систем спостереження для підвищення пропускної здатності аеродрому»
Completed by: Mikhaylichenko O.O.Supervisor: Bogunenko M.M.
Kyiv 2015
PURPOSE:
Investigation of the influence of surveillance systems to
aerodrome capacity in Ukraine.
INVESTIGATION object:
Surveillance systems.
INVESTIGATION subject:
Aerodrome movement tracking systems
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Tasks:
Analize documents which determine aerodrome
capacity
Carry out mathematical calculations of elements
of aerodrome capacity
Use the MLAT system on the aerodrome Kharkov
for observation of the movement
Actuality of work
Aerodrome is the most intense point of the air traffic.
The solution problems which influence on aerodrome capacity is
vitally important task.
Determination systems that support increase the capacity of the
aerodrome with prescribed safe level.
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Now the most widespread aids for air traffic monitoring are
radar systems. They are divided into primary and secondary
radars. New surveillance systems using Mode S transponder
of aircraft, such as ADS-B, were developed within the last 10
years.
The MLAT surveillance system (for observation in the
terminal area and on the manoeuvring area) shows the best
results in practical application.
Introduction
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MLAT system
Multilateration (MLAT) is a navigation technique based on the measurement of the difference in distance to two stations at known locations that broadcast signals at known times. Unlike measurements of absolute distance or angle, measuring the difference in distance between two stations results in an infinite number of locations that satisfy the measurement.
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MLAT in Ukraine
In 2012, it installed and put into operation
multilateration (MLAT) surveillance system in the
approach area (CTR) and Zhulyany Airport Borispol, as
well as the MLAT-control system of ground
displacements Boryspil airport. The tests mentioned
systems showed that they provide the required accuracy.
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Implementation in Kharkiv aerodrome
The capacity of the taxiway system is rarely, if ever, the capacity bottleneck of major airports however, some specific parts of the taxiway system may consistently act as “hot spots” (points of congestion), especially at older, limited-area airports. So we can calculate taxiway capacity in different conditions:
Here, d-distance between aircrafts
n-intensity
V-speed of AC
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d
Vn
For VMC we have:So the average speed of AC is 20-30 km/hAverage distance is 200-400m
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Time interval it will be:
n=100ac/h
s36100
3600T
0.2
20n
interval between AC, such intensity provides
maximum capacity on aerodrome with one
RW
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0.4
10n
n=25
Dependence of AC on time will be:
min24.225
3600T
Such movement will limit the capacity of the traffic
For IMC (without surveillance aids) we have:
This interval (distance between ACs) must be increase and decrease the speed which can cause conflict.
V=10km/hd=400m
Installation MLAT system on Kharkiv aerodrome (proposition)
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Coverage area monitoring with accuracy 25m
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Conclusions
The use of modern electronic systems MLAT will significantly improve the navigation performance of aircraft, increase the capacity of aerodrome will predict the awareness situations in the aerodrome. The use of these systems lies in the compensation of the individual navigation parameters in order to increase their technical characteristics.
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Thank you for your attention!
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