next gen air traffic mamnagement system:the case of ads-b

5/18/2018 next Gen Air traffic mamnagement system:the case of ads-b

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Presented by

Bhagyashree S.BorekarRoll No.-8102

Challenges of Next GenerationAir Traffic Management:

The Case of ADS-B


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Contents

1. Motivation

2. Scope

. !ntrod"ction

#. $o%parison

&. Principle o' ()S-B

*. $"rrent Scenario

+. $hallenges ,aced

8. Re'erences


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Motivation

o s"ccess'"lly handle groing air tra''ic/ avoid accidents and

collisions and to i%prove the sa'ety o' billions o' '"t"re

passengers/ net generation air tra''ic %anage%ent syste%s

are cr"cial.


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Scope

St"dy o' (ir ra''ic Manage%ent ith ()S-B syste%.

nderstanding o' the c"rrent state o' the 100 M34 co%%"nication

channel and its behavior "nder the increasing tra''ic load.

$hallenges 'ace by ()S-B.


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What is ADS-B??

Ne technology that is rede'ining the paradig% o' $5MMN!$(!5NS

-N(6!7(!5N -SR6!99(N$ in (ir ra''ic Manage%ent today.

Atomatic : No interrogation by eternal syste%/ and no pilot

inp"t re;"ired

Depen!ent : Position and velocity vector based on on ship


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"rinciple of ADS-B

$o%bine satellite-based positioning ith a radio 're;"ency =R,>

data-link to contin"o"sly and a"to%atically broadcast location

"pdates and intents

here are to co%peting ()S-B data link standards that have been

proposed@

1. niversal (ccess ransceiver =(>

- +8M34 're;"ency

- speci'ically 'or "se ith aviation services- operates belo 18/000 'eets

2. tended S;"itter

- 100M34

- $o%%ercial aircra't


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Tra!itional Approach

-Based on R()(R

"rimar# Srveillance $a!ars %"S$&

- independent and they do not re;"ire cooperation 'ro% the air-cra't.

-

trans%it high-'re;"ency signals/ hich are re'lected by the target.

Secon!ar# Srveillance $a!ars %SS$&

- dependant on transponders in the aircra't

- transponders respond to interrogations 'ro% gro"nd stations.

'imitation@- Relatively lo precision and detection acc"racy


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ADS-B Coverage


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GetPosition

FromGNSS

GNSS

ADS-B

OUT


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ADS-B Avionics Mo!e


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()S-B (vionics operating %odes

()S-B 5"t@ he trans%ission o' ()S-B in'or%ation 'ro% aircra't

()S-B !N @ he receipt o' ()S-B in'or%ation by an aircra't

he %ai%"% range beteen the trans%itting and receiving

airplanes is greater than 100 na"tical %iles =n%i>/ alloing the

$)! to display tra''ic both near and 'ar.


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Comparison of Civil Aviation Transpon!er mo!es

Message

length

Frequenci

es(MHz)

Operation

al mode

Use case

TechnicalStandards

Mode A 12 bit 1030 (up)1090

(down)

Independent/

Non-see!ti"e

interro#$tion

Identi%!$tion &S'- * b

Mode + 12 bit 1030 (up)1090

(down)

Independent/

Non-

see!ti"einterro#$tion

PressureAtitude,tr$!tion

&S'- * !

Mode ./112 bit 1030 (up)1090

(down)

Independent/

See!ti"e

interro#$tion

Mutipe&S'-112b


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Comparison of Data 'in(s

Mo!e S )xten!e!

S*itter +,,)S

.niversal Access

Transceiver %.AT&

,re;"ency 100 M34 +8 M34

,re;"encyShared ith

$(S/ Pri%ary R()(R/!S-B/()S-R

,!S-B/ !S-B/ ()S-R

!ntended ser (ir ransport/ 3igh nd7eneral (viation

7eneral (viation

echnical Standard )5-2*0B/ as o"tlined inS5-1**b

)5-282B/ as o"tlined inS5-1c


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Bloc( Diagram


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+,, )xten!e! S*itter Message /ormat

Synchroni4ation

n

!ndicates the type o'%essage

$o%%"nication capability

S"rveillance data =e.g./ identi'ication/position/ velocity/ "rgency code and

;"ality level

( trans%ission error in a

received %essage.


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Benefits

More acc"rate and consistent

$apacity i%prove%ent

S"rveillance is easier and less epensive

Capacit#

A More aircra't 'ly sa'ely at sa%e ti%e

A Signi'icant increase in Non-radar airspace ro"te density

A More e''icient "se o' r"nays 'or takeo''s and landings


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)fficienc#

A (ircra't can 'ly closer together

A !%ple%entation is rapid and lo cost

A ()S-B can be scaled and adapted

A Red"ced costs per passenger

Safet#

A6astly i%proved sit"ational aareness

A Precise position velocity is broadcast

A Real-ti%e data is broadcast

A (ll "sers see sa%e data

A (ir and gro"nd tra''ic visible

A ra''ic %onitoring in Non-radar airspace

A R"nay inc"rsion aareness


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9ive screenshot o' 5penSky reception over $entral "rope.

Case St!#: 0pen S(#


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Case St!#: 0pen S(#

0nline since 1+2,+23,+1

(rea +20/000 k%2

Sensors

SBS- stations 'ro% Cinetic (vionics

11

Received %essages D #/&00/000/000

,lights per day +/&00

)i''erent aircra't 1/000


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Challenges /ace!

1. S"sceptible to severe %essage collisions in dense air spaces.

2. R, attacks ith cheap o''-the-shel' so'tare-de'ined radios.

. !nEect 'alse aircra't positions.

#. nencrypted ()S-B %essages.


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References

1. Martin Stroh%eier et. al./ FRealities and $hallenges o' Net7en (ir ra''ic

Manage%ent@ he $ase o' ()S-B, IEEE Communications Magazine /May

201#

2. $. Rekkas and M. Rees/ Foards ()S-B i%ple%entation in "rope/G !

yrrhenian !nt/ / Sept. 2008

. ("to%atic )ependent S"rveillance : Broadcast =()SB>/Air Traffic

Management CircularNo. 2 o' 2012


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#. Matthias Scha'er et. al./ FBringing "p 5penSky@( 9arge-scale ()S-B

Sensor Netork 'or ResearchG/ ACM/IEEE Intl. Conf. Information

Processing in Sensor Networs !IPSN" / (pr. 201#.

&. ("to%atic )ependent S"rveillance : Broadcast =(ds-b> 5"t Based (S

S"rveillance Services / ,ile No. ((!?(M?(!S?0-0?201#

*. Steve Podradchik/ F( pilot


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$eferences Cont!44

+. Hillia% R. Richards et. al./ FNe (ir ra''ic S"rveillance echnologyG/

Aero %uarterl$ %T*J 02 /pg +-1

8. .ads-b.co%

. .trig-avionics.co%

10. ). Mc$allie/ K. B"tts/ and R. Mills/ FSec"rity (nalysis o' the ()S-B

!%ple%entation in the Net 7eneration (ir ransportation Syste%,

Intl. +. Critical Infrastructure Protection !I+CIP", vol. #/ no. 2/ ("g.

2011/ pp. +8:8+.


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next gen air traffic mamnagement system:the case of ads-b

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