<s>
ARTAS	B-General_Concept
(	O
ATM	O
suRveillance	O
Tracker	O
And	O
Server	O
)	O
is	O
a	O
system	O
designed	O
by	O
Eurocontrol	O
to	O
operationally	O
support	O
Aerial	O
surveillance	O
and	O
Air	B-Application
traffic	I-Application
control	I-Application
by	O
establishing	O
an	O
accurate	O
Air	O
Situation	O
Picture	O
of	O
all	O
traffic	O
over	O
a	O
pre-defined	O
geographical	O
area	O
(	O
e.g.	O
</s>
<s>
A	O
User	O
of	O
ARTAS	B-General_Concept
in	O
a	O
general	O
sense	O
is	O
defined	O
in	O
this	O
context	O
as	O
any	O
ATC	B-Application
subsystem	O
having	O
a	O
requirement	O
to	O
receive	O
at	O
defined	O
instants	O
the	O
best	O
and	O
most	O
up-to-date	O
estimate	O
of	O
all	O
or	O
selected	O
aircraft	O
state	O
vector	O
elements	O
for	O
all	O
air	B-Application
traffic	I-Application
of	O
interest	O
to	O
this	O
User	O
e.g.	O
</s>
<s>
ATC	B-Application
Tools	O
,	O
</s>
<s>
ARTAS	B-General_Concept
is	O
a	O
distributed	O
system	O
composed	O
of	O
a	O
number	O
of	O
identical	O
subsystems	O
co-operating	O
together	O
.	O
</s>
<s>
Each	O
subsystem	O
,	O
called	O
an	O
ARTAS	B-General_Concept
Unit	O
,	O
will	O
process	O
all	O
surveillance	O
sensor	O
data	O
to	O
form	O
a	O
best	O
track	O
estimate	O
of	O
the	O
current	O
Air	B-Application
Traffic	I-Application
situation	O
within	O
a	O
given	O
Domain	O
of	O
Interest	O
.	O
</s>
<s>
Adjacent	O
ARTAS	B-General_Concept
Units	O
co-ordinate	O
their	O
tracks	O
to	O
build	O
a	O
unique	O
,	O
coherent	O
and	O
continuous	O
Air	O
Situation	O
Picture	O
over	O
the	O
complete	O
area	O
.	O
</s>
<s>
Four	O
groups	O
of	O
main	O
functions	O
are	O
implemented	O
in	O
an	O
ARTAS	B-General_Concept
Unit	O
:	O
</s>
<s>
The	O
ROUTER	O
BRIDGE	O
manages	O
the	O
external	O
interfaces	O
to	O
the	O
Normal	O
Users	O
,	O
the	O
Broadcast	O
Users	O
,	O
the	O
Adjacent	O
ARTAS	B-General_Concept
Units	O
and	O
the	O
surveillance	O
sensors	O
.	O
</s>
<s>
The	O
SYSTEM	O
MANAGER	O
processes	O
the	O
functions	O
related	O
to	O
the	O
Human	O
supervision	O
and	O
management	O
of	O
the	O
ARTAS	B-General_Concept
Unit	O
.	O
</s>
<s>
In	O
April	O
1990	O
,	O
the	O
Ministers	O
of	O
Transport	O
of	O
the	O
European	O
Civil	O
Aviation	O
Conference	O
(	O
ECAC	O
)	O
launched	O
the	O
"	O
En-route	O
Strategy	O
for	O
the	O
1990s	O
"	O
-	O
a	O
multilateral	O
strategy	O
designed	O
to	O
ensure	O
that	O
,	O
by	O
the	O
end	O
of	O
the	O
century	O
,	O
Air	B-Application
Traffic	I-Application
Control	I-Application
capacity	O
will	O
match	O
forecast	O
demand	O
.	O
</s>
<s>
This	O
strategy	O
drove	O
an	O
initial	O
programme	O
,	O
EATCHIP	O
-	O
the	O
European	O
ATC	B-Application
Harmonisation	O
and	O
Integration	O
Programme	O
,	O
developed	O
and	O
managed	O
by	O
EUROCONTROL	O
to	O
undertake	O
the	O
progressive	O
harmonisation	O
and	O
integration	O
of	O
Air	B-Application
Traffic	I-Application
Services	O
throughout	O
the	O
ECAC	O
area	O
.	O
</s>
<s>
A	O
programme	O
has	O
been	O
established	O
to	O
provide	O
the	O
framework	O
for	O
meeting	O
the	O
objective	O
of	O
the	O
ATM	O
2000+	O
Strategy	O
,	O
EATMP	O
–	O
the	O
European	O
Air	B-Application
Traffic	I-Application
Management	O
Programme	O
,	O
as	O
a	O
follow-up	O
of	O
EATCHIP	O
.	O
</s>
<s>
The	O
phased	O
development	O
of	O
ARTAS	B-General_Concept
started	O
in	O
June	O
1993	O
.	O
</s>
<s>
In	O
parallel	O
to	O
the	O
development	O
,	O
a	O
comprehensive	O
evaluation	O
programme	O
of	O
the	O
successive	O
versions	O
of	O
the	O
ARTAS	B-General_Concept
Pilot	O
system	O
has	O
been	O
undertaken	O
with	O
a	O
number	O
of	O
National	O
ATM	O
Organisations	O
.	O
</s>
<s>
Following	O
the	O
evaluation	O
programmes	O
,	O
ARTAS	B-General_Concept
has	O
been	O
gradually	O
introduced	O
as	O
operational	O
system	O
and	O
it	O
is	O
part	O
of	O
the	O
surveillance	O
infrastructure	O
of	O
numerous	O
operational	O
centres	O
of	O
Europe	O
.	O
</s>
<s>
It	O
is	O
believed	O
that	O
such	O
an	O
implementation	O
of	O
a	O
harmonised	O
Surveillance	O
Data	O
Processing	O
System	O
like	O
ARTAS	B-General_Concept
,	O
together	O
with	O
the	O
wide	O
introduction	O
of	O
Radar	B-Application
Data	O
Networks	O
and	O
the	O
improvements	O
of	O
radar	B-Application
sensors	O
created	O
the	O
necessary	O
technical	O
condition	O
for	O
improved	O
ATM	O
co-ordination	O
and	O
the	O
uniform	O
application	O
of	O
radar	B-Application
separation	O
minima	O
throughout	O
a	O
large	O
part	O
of	O
Europe	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
ARTAS	B-General_Concept
system	O
,	O
a	O
Central	O
ARTAS	B-General_Concept
software	O
Maintenance	O
and	O
Operational	O
Support	O
(	O
CAMOS	O
)	O
service	O
for	O
those	O
versions	O
of	O
ARTAS	B-General_Concept
that	O
are	O
in	O
pre-operational	O
or	O
operational	O
use	O
was	O
created	O
.	O
</s>
<s>
CAMOS	O
collects	O
the	O
ARTAS	B-General_Concept
system	O
data	O
and	O
parameters	O
needed	O
to	O
ensure	O
the	O
exchanges	O
of	O
surveillance	O
data	O
between	O
the	O
States	O
implementing	O
ARTAS	B-General_Concept
and	O
provides	O
software	O
enhancements	O
to	O
the	O
commonly	O
developed	O
ARTAS	B-General_Concept
System	O
for	O
functionality	O
required	O
by	O
changes	O
in	O
the	O
technical	O
environment	O
or	O
common	O
user	O
needs	O
.	O
</s>
<s>
has	O
been	O
EUROCONTROL	O
's	O
Industrial	O
Partner	O
for	O
Centralised	O
ARTAS	B-General_Concept
maintenance	O
and	O
support	O
(	O
CAMOS	O
)	O
since	O
2001	O
and	O
is	O
also	O
a	O
turnkey	O
supplier	O
of	O
ARTAS	B-General_Concept
systems	O
.	O
</s>
<s>
Considerable	O
savings	O
are	O
realised	O
because	O
of	O
the	O
large	O
scale	O
implementation	O
of	O
ARTAS	B-General_Concept
.	O
</s>
<s>
ARTAS	B-General_Concept
is	O
developed	O
as	O
a	O
regional	O
system	O
concept	O
consisting	O
of	O
individual	O
surveillance	O
data	O
processing	O
and	O
distribution	O
units	O
,	O
which	O
together	O
will	O
operate	O
as	O
one	O
entity	O
.	O
</s>
<s>
Each	O
subsystem	O
,	O
called	O
an	O
ARTAS	B-General_Concept
Unit	O
,	O
processes	O
all	O
surveillance	O
data	O
reports	O
-	O
i.e.	O
</s>
<s>
radar	B-Application
reports	O
,	O
including	O
Mode	O
S	O
,	O
ADS	B-Application
reports	O
,	O
and	O
Multilateration	O
reports	O
to	O
form	O
a	O
best	O
estimate	O
of	O
the	O
current	O
Air	B-Application
Traffic	I-Application
situation	O
within	O
a	O
given	O
Domain	O
of	O
Interest	O
.	O
</s>
<s>
In	O
this	O
manner	O
,	O
adjacent	O
ARTAS	B-General_Concept
Units	O
can	O
co-ordinate	O
their	O
tracks	O
to	O
build	O
a	O
unique	O
,	O
coherent	O
and	O
continuous	O
Air	O
Situation	O
Picture	O
over	O
the	O
complete	O
area	O
.	O
</s>
<s>
The	O
seamless	O
integration	O
of	O
all	O
Units	O
permits	O
the	O
application	O
of	O
5NM	O
separation	O
minima	O
throughout	O
the	O
total	O
covered	O
area	O
,	O
also	O
at	O
transfers	O
of	O
traffic	O
from	O
one	O
ATC	B-Application
unit	O
to	O
the	O
next	O
one	O
.	O
</s>
<s>
3NM	O
separation	O
can	O
be	O
done	O
following	O
an	O
in-depth	O
operational	O
evaluation	O
of	O
the	O
ARTAS	B-General_Concept
behaviour	O
in	O
the	O
local	O
environments	O
.	O
</s>
<s>
Through	O
a	O
User/Server	O
type	O
of	O
interface	O
,	O
the	O
systems	O
connected	O
to	O
ARTAS	B-General_Concept
(	O
e.g.	O
</s>
<s>
local	O
display	O
system	O
,	O
remote	O
users	O
like	O
Terminal	O
Areas	O
without	O
own	O
Radar	B-Application
Data	O
Processing	O
System	O
,	O
Flow	O
Management	O
Units	O
,	O
etc	O
.	O
)	O
</s>
<s>
)	O
,	O
maintained	O
by	O
the	O
Tracker	O
,	O
the	O
served	O
tracks	O
comprise	O
other	O
information	O
of	O
interest	O
for	O
the	O
user	O
systems	O
,	O
including	O
Flight	O
Plan	O
related	O
information	O
,	O
provided	O
by	O
the	O
Flight	O
Data	O
Processing	O
Systems	O
users	O
of	O
ARTAS	B-General_Concept
(	O
Callsign	O
,	O
departure/arrival	O
airports	O
,	O
type	O
of	O
aircraft	O
,	O
etc	O
.	O
</s>
<s>
The	O
initial	O
versions	O
of	O
ARTAS	B-General_Concept
were	O
developed	O
using	O
the	O
DOD-STD-2167A	O
standard	O
which	O
remains	O
in	O
use	O
as	O
the	O
structure	O
for	O
the	O
main	O
documents	O
concerning	O
the	O
ARTAS	B-General_Concept
product	O
itself	O
at	O
system	O
and	O
CSCI	O
levels	O
.	O
</s>
<s>
With	O
ARTAS	B-General_Concept
V8B	O
Version	O
the	O
ARTAS	B-General_Concept
Unit	O
is	O
hosted	O
into	O
one	O
ARTAS	B-General_Concept
Station	O
HWCI	O
(	O
AS	O
)	O
.	O
</s>
<s>
A	O
dual	O
ARTAS	B-General_Concept
system	O
consists	O
of	O
two	O
identical	O
computers	O
(	O
Chain	O
)	O
(	O
master	O
and	O
slave	O
)	O
and	O
their	O
associated	O
peripherals	O
.	O
</s>
<s>
Furthermore	O
,	O
with	O
ARTAS	B-General_Concept
V8B	O
Version	O
the	O
MW	O
(	O
ARTAS	B-General_Concept
Middleware	O
)	O
CSCI	O
replaces	O
the	O
Off-The-Shelf	O
(	O
OTS	O
)	O
product	O
UBSS	O
.	O
</s>
<s>
Without	O
counting	O
the	O
COTS	O
software	O
,	O
the	O
ARTAs	B-General_Concept
software	O
(	O
middleware	O
and	O
application	O
software	O
)	O
represents	O
a	O
total	O
of	O
about	O
1.8	O
million	O
lines	O
of	O
source	O
code	O
,	O
written	O
in	O
Ada	O
,	O
C	O
,	O
C++	O
,	O
Python	O
and	O
shell	O
scripts	O
.	O
</s>
<s>
ARTAS	B-General_Concept
V8B3	O
,	O
the	O
MMS	O
CSCI	O
integrates	O
a	O
modern	O
,	O
ergonomic	O
and	O
flexible	O
graphical	O
user	O
interface	O
based	O
on	O
a	O
Client/Server	O
architecture	O
.	O
</s>
<s>
The	O
ARTAS	B-General_Concept
software	O
considering	O
on-line	O
,	O
off-line	O
components	O
,	O
middleware	O
and	O
application	O
software	O
,	O
represents	O
a	O
total	O
of	O
about	O
2.1	O
million	O
lines	O
of	O
source	O
code	O
,	O
written	O
in	O
Ada	O
,	O
C	O
,	O
Java	O
,	O
Python	O
and	O
shell	O
scripts	O
.	O
</s>
<s>
Further	O
ARTAS	B-General_Concept
versions	O
will	O
be	O
developed	O
to	O
include	O
ground	O
tracking	O
(	O
gate	O
to	O
gate	O
)	O
.	O
</s>
<s>
At	O
present	O
,	O
an	O
ARTAS	B-General_Concept
Surface	O
Movement	O
Surveillance	O
prototype	O
extension	O
(	O
namely	O
ARTAS	B-General_Concept
SMSp	O
)	O
is	O
available	O
for	O
evaluation	O
purpose	O
.	O
</s>
<s>
ARTAS	B-General_Concept
V9.0.0	O
addresses	O
over	O
60	O
issues	O
reported	O
by	O
its	O
Users	O
,	O
including	O
improved	O
tracking	O
in	O
the	O
vicinity	O
of	O
airports	O
by	O
integrating	O
the	O
System	O
Manager	O
System	O
(	O
SMS	O
)	O
prototype	O
.	O
</s>
<s>
Additional	O
improvements	O
were	O
made	O
to	O
the	O
management	O
of	O
ADS-B	B-Application
,	O
as	O
well	O
as	O
the	O
system	O
’s	O
overall	O
cyber	O
security	O
.	O
</s>
<s>
ARTAS	B-General_Concept
V9.0.1	O
addresses	O
over	O
90	O
issues	O
reported	O
by	O
its	O
Users	O
,	O
including	O
some	O
mitigations	O
for	O
ADS-B	B-Application
issues	O
,	O
various	O
improvements	O
for	O
WAM	O
,	O
a	O
monitor	O
of	O
the	O
ARTAS	B-General_Concept
processes	O
as	O
well	O
as	O
some	O
upgrades	O
for	O
cyber	O
security	O
threats	O
.	O
</s>
<s>
This	O
version	O
also	O
brings	O
some	O
major	O
code	O
clean	O
up	O
and	O
refactoring	O
that	O
will	O
easy	O
maintenance	O
and	O
evolution	O
of	O
ARTAS	B-General_Concept
in	O
the	O
future	O
.	O
</s>
<s>
All	O
changes	O
in	O
ARTAS	B-General_Concept
are	O
done	O
under	O
control	O
of	O
the	O
ARTAS	B-General_Concept
User	O
Group	O
(	O
AUG	O
)	O
Change	O
Control	O
Board	O
.	O
</s>
<s>
ARTAS	B-General_Concept
maintenance	O
is	O
shared	O
between	O
CAMOS	O
(	O
Centralised	O
ARTAS	B-General_Concept
Maintenance	O
and	O
Operational	O
Support	O
)	O
and	O
LAMOS	O
(	O
Local	O
ARTAS	B-General_Concept
Maintenance	O
and	O
Operational	O
Support	O
)	O
.	O
</s>
<s>
CAMOS	O
services	O
do	O
not	O
include	O
hardware	O
support	O
,	O
but	O
if	O
required	O
by	O
the	O
users	O
,	O
the	O
Agency	O
may	O
decide	O
to	O
propose	O
a	O
service	O
for	O
the	O
ARTAS	B-General_Concept
hardware	O
support	O
as	O
well	O
.	O
</s>
<s>
In	O
the	O
context	O
of	O
CAMOS	O
,	O
the	O
EUROCONTROL	O
Agency	O
(	O
ARTAS	B-General_Concept
Service	O
Manager	O
)	O
acts	O
as	O
AUG	O
representative	O
and	O
provides	O
directives	O
to	O
the	O
service	O
provider	O
on	O
behalf	O
of	O
the	O
AUG	O
.	O
</s>
<s>
The	O
activities	O
of	O
maintenance	O
and	O
support	O
are	O
performed	O
by	O
the	O
Agency	O
,	O
where	O
EUROCONTROL	O
experts	O
in	O
conjunction	O
with	O
their	O
industrial	O
partners	O
,	O
ensure	O
support	O
to	O
the	O
Operational	O
ARTAS	B-General_Concept
units	O
as	O
well	O
as	O
the	O
Pre-Operational	O
Units	O
,	O
defined	O
through	O
a	O
Service	O
Level	O
Agreement	O
with	O
ARTAS	B-General_Concept
users	O
.	O
</s>
<s>
At	O
present	O
ARTAS	B-General_Concept
is	O
in	O
operation	O
at	O
thirty-one	O
ATC	B-Application
Centres	O
in	O
Europe	O
and	O
under	O
evaluation	O
in	O
many	O
other	O
European	O
states	O
.	O
</s>
<s>
In	O
total	O
,	O
around	O
100	O
ARTAS	B-General_Concept
units	O
are	O
currently	O
implemented	O
or	O
in	O
the	O
course	O
of	O
implementation	O
,	O
at	O
more	O
than	O
40	O
European	O
sites	O
.	O
</s>
