<s>
Cobra	B-Algorithm
Mist	I-Algorithm
was	O
the	O
codename	O
for	O
an	O
Anglo-American	O
experimental	O
over-the-horizon	B-Architecture
radar	I-Architecture
station	O
at	O
Orford	O
Ness	O
,	O
England	O
.	O
</s>
<s>
It	O
was	O
known	O
technically	O
as	O
AN/FPS	B-Algorithm
-95	I-Algorithm
and	O
sometimes	O
referred	O
to	O
as	O
System	O
441a	O
;	O
a	O
reference	O
to	O
the	O
project	O
as	O
a	O
whole	O
.	O
</s>
<s>
Cobra	B-Algorithm
Mist	I-Algorithm
was	O
part	O
of	O
a	O
small	O
number	O
of	O
"	O
Cobra	O
"	O
long-range	O
surveillance	O
radars	O
operated	O
by	O
the	O
US	O
.	O
</s>
<s>
Cobra	B-Algorithm
Mist	I-Algorithm
was	O
originally	O
intended	O
to	O
be	O
mounted	O
in	O
Turkey	O
and	O
to	O
offer	O
coverage	O
of	O
most	O
of	O
European	O
Soviet	O
airspace	O
.	O
</s>
<s>
In	O
August	O
2015	O
,	O
the	O
site	O
and	O
all	O
the	O
facilities	O
previously	O
held	O
by	O
the	O
UK	O
Foreign	O
Office	O
and	O
the	O
BBC	O
(	O
and	O
prior	O
to	O
them	O
the	O
Ministry	O
of	O
Defence	O
)	O
were	O
acquired	O
by	O
Cobra	B-Algorithm
Mist	I-Algorithm
Limited	O
,	O
a	O
privately	O
owned	O
company	O
.	O
</s>
<s>
Cobra	B-Algorithm
Mist	I-Algorithm
was	O
based	O
on	O
the	O
Naval	O
Research	O
Laboratory	O
's	O
experimental	O
Magnetic-Drum	B-Architecture
Radar	I-Architecture
Equipment	I-Architecture
( 	O
 '	O
MADRE	O
 '	O
)	O
,	O
which	O
was	O
able	O
to	O
reliably	O
detect	O
aircraft	O
at	O
ranges	O
up	O
to	O
from	O
its	O
base	O
on	O
the	O
Chesapeake	O
Bay	O
.	O
</s>
<s>
Whether	O
this	O
had	O
an	O
effect	O
on	O
Cobra	B-Algorithm
Mist	I-Algorithm
is	O
unknown	O
.	O
</s>
<s>
The	O
AN/FPS	B-Algorithm
-95	I-Algorithm
antenna	O
consisted	O
of	O
18	O
individual	O
strings	O
radiating	O
outward	O
from	O
a	O
single	O
point	O
near	O
the	O
eastern	O
shore	O
of	O
Orford	O
Ness	O
.	O
</s>
<s>
Operating	O
the	O
AN/FPS	B-Algorithm
-95	I-Algorithm
radar	O
took	O
considerable	O
pre-observation	O
setup	O
.	O
</s>
<s>
In	O
the	O
case	O
of	O
Cobra	B-Algorithm
Mist	I-Algorithm
,	O
the	O
signal	O
was	O
first	O
gated	O
for	O
range	O
by	O
eliminating	O
any	O
signals	O
lying	O
outside	O
a	O
particular	O
time	O
window	O
;	O
thereby	O
selecting	O
targets	O
within	O
a	O
particular	O
area	O
.	O
</s>
