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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