<s>
The	O
AN/FPS	B-Application
-117	I-Application
is	O
an	O
L-band	B-Algorithm
active	B-Architecture
electronically	I-Architecture
scanned	I-Architecture
array	I-Architecture
(	O
AESA	O
)	O
3-dimensional	B-Algorithm
air	I-Algorithm
search	I-Algorithm
radar	I-Algorithm
first	O
produced	O
by	O
GE	O
Aerospace	O
in	O
1980	O
and	O
now	O
part	O
of	O
Lockheed	O
Martin	O
.	O
</s>
<s>
To	O
fill	O
a	O
need	O
for	O
the	O
US	O
Marine	O
Corps	O
,	O
GE	O
developed	O
the	O
transportable	O
AN/TPS	B-Application
-59	I-Application
,	O
and	O
later	O
combined	O
design	O
elements	O
to	O
produce	O
the	O
smaller	O
AN/TPS	B-Application
-77	I-Application
which	O
is	O
even	O
more	O
mobile	O
,	O
requiring	O
only	O
one	O
prime	O
mover	O
in	O
some	O
deployment	O
scenarios	O
.	O
</s>
<s>
FPS-117s	B-Application
,	O
modified	O
with	O
input	O
from	O
Siemens	O
for	O
German	O
service	O
are	O
known	O
as	O
the	O
RRP-117	O
,	O
while	O
the	O
TPS-77s	B-Application
in	O
service	O
with	O
the	O
RAF	O
are	O
known	O
as	O
the	O
AMES	B-Application
Type	I-Application
92	I-Application
.	O
</s>
<s>
An	O
even	O
smaller	O
version	O
was	O
introduced	O
by	O
Lockheed	O
Martin	O
as	O
the	O
TPS-77	B-Application
MRR	O
.	O
</s>
<s>
A	O
key	O
problem	O
for	O
radar	O
systems	O
of	O
the	O
1950s	O
was	O
the	O
introduction	O
of	O
the	O
carcinotron	B-Algorithm
,	O
a	O
microwave-producing	O
tube	O
that	O
could	O
be	O
rapidly	O
tuned	O
across	O
a	O
wide	O
bandwidth	O
.	O
</s>
<s>
During	O
the	O
1950s	O
,	O
variations	O
on	O
the	O
array	B-Algorithm
antenna	I-Algorithm
were	O
being	O
actively	O
explored	O
by	O
many	O
designers	O
.	O
</s>
<s>
By	O
introducing	O
small	O
delays	O
,	O
using	O
devices	O
known	O
as	O
phase	B-Algorithm
shifters	I-Algorithm
,	O
the	O
output	O
of	O
the	O
beam	O
could	O
be	O
steered	O
electronically	O
.	O
</s>
<s>
The	O
original	O
Marconi	B-Algorithm
Martello	I-Algorithm
offered	O
the	O
same	O
detection	O
capability	O
as	O
the	O
Type	O
85	O
from	O
a	O
"	O
transportable	O
"	O
design	O
using	O
six	O
prime	O
movers	O
.	O
</s>
<s>
While	O
solid-state	O
systems	O
reduced	O
the	O
price	O
of	O
an	O
antenna	B-Algorithm
array	I-Algorithm
,	O
they	O
did	O
not	O
offer	O
nearly	O
the	O
same	O
power	O
output	O
,	O
even	O
in	O
aggregate	O
.	O
</s>
<s>
To	O
regain	O
range	O
resolution	O
,	O
the	O
relatively	O
new	O
technique	O
of	O
pulse	B-Algorithm
compression	I-Algorithm
was	O
widely	O
introduced	O
.	O
</s>
<s>
These	O
used	O
two	O
500kW	O
magnetrons	B-Device
on	O
huge	O
always-turning	O
parabolic	O
antenna	O
systems	O
and	O
rooms	O
filled	O
with	O
tube-based	O
electronics	O
to	O
drive	O
them	O
.	O
</s>
<s>
In	O
1980	O
,	O
General	O
Electric	O
won	O
the	O
contest	O
with	O
their	O
GE-592	B-Application
design	O
,	O
and	O
the	O
final	O
design	O
was	O
accepted	O
by	O
RADC	O
on	O
30	O
September	O
1983	O
and	O
passed	O
acceptance	O
tests	O
that	O
year	O
.	O
</s>
<s>
Shortly	O
thereafter	O
,	O
the	O
Air	O
Force	O
purchased	O
another	O
FPS-117	B-Application
to	O
replace	O
the	O
aging	O
AN/FPS	O
-67	O
radar	O
at	O
Berlin	O
Tempelhof	O
Airport	O
.	O
</s>
<s>
The	O
RAF	O
planned	O
to	O
replace	O
Linesman	O
with	O
the	O
IUKADGE	O
network	O
using	O
the	O
Marconi	B-Algorithm
Martello	I-Algorithm
radars	O
,	O
but	O
as	O
this	O
system	O
dragged	O
on	O
they	O
eventually	O
purchased	O
two	O
AN/FPS	B-Application
-117	I-Application
as	O
well	O
.	O
</s>
<s>
As	O
the	O
first	O
FPS-117	B-Application
systems	O
were	O
being	O
tested	O
,	O
the	O
US	O
Marine	O
Corps	O
sent	O
out	O
a	O
tender	O
for	O
an	O
air-warning	O
radar	O
with	O
long	O
range	O
and	O
good	O
jamming	O
rejection	O
.	O
</s>
<s>
GE	O
won	O
the	O
contract	O
with	O
a	O
modified	O
version	O
of	O
the	O
FPS-117	B-Application
,	O
the	O
TPS-59	B-Application
.	O
</s>
<s>
The	O
TPS-59	B-Application
was	O
essentially	O
a	O
cut-down	O
version	O
of	O
the	O
FPS-117	B-Application
split	O
up	O
into	O
several	O
components	O
.	O
</s>
<s>
The	O
TPS-59(V )	O
3	O
modified	O
the	O
existing	O
TPS-59	B-Application
radar	I-Application
sets	O
to	O
provide	O
much	O
higher	O
altitude	O
coverage	O
,	O
up	O
to	O
.	O
</s>
<s>
All	O
U.S.	O
TPS-59	B-Application
radars	I-Application
were	O
decommissioned	O
in	O
September	O
2020	O
.	O
</s>
<s>
A	O
further	O
version	O
of	O
the	O
series	O
was	O
introduced	O
as	O
the	O
TPS-117	O
,	O
soon	O
renamed	O
TPS-77	B-Application
.	O
</s>
<s>
The	O
system	O
is	O
a	O
long	O
range	O
(	O
up	O
to	O
)	O
,	O
L-band	B-Algorithm
pencil	O
beam	O
search	O
radar	O
with	O
solid-state	O
transmitters	O
.	O
</s>
<s>
The	O
AESA	O
principle	O
uses	O
active	O
transmitters	O
in	O
each	O
individual	O
antenna	O
in	O
the	O
44-by-32	O
antenna	B-Algorithm
array	I-Algorithm
.	O
</s>
<s>
To	O
extract	O
accurate	O
range	O
information	O
,	O
the	O
receivers	O
employ	O
pulse	B-Algorithm
compression	I-Algorithm
.	O
</s>
<s>
It	O
is	O
typically	O
also	O
equipped	O
with	O
an	O
identification	B-Device
friend	I-Device
or	I-Device
foe	I-Device
system	O
using	O
a	O
second	O
antenna	O
on	O
top	O
.	O
</s>
<s>
The	O
Air	O
Force	O
and	O
the	O
FAA	O
also	O
operate	O
a	O
limited	O
number	O
of	O
AN/FPS	B-Application
-117	I-Application
radars	O
within	O
the	O
continental	O
United	O
States	O
.	O
</s>
<s>
The	O
AN/FPS	B-Application
-117	I-Application
radar	O
is	O
capable	O
of	O
randomly	O
hopping	O
among	O
18	O
channels	O
in	O
the	O
1215-1400MHz	O
band	O
.	O
</s>
<s>
The	O
AN/TPS	B-Application
-77	I-Application
is	O
a	O
version	O
of	O
the	O
same	O
radar	O
mounted	O
on	O
a	O
transportable	O
platform	O
.	O
</s>
<s>
-	O
AN/TPS	B-Application
-77	I-Application
.	O
</s>
<s>
-	O
7	O
AN/FPS	B-Application
-117	I-Application
and	O
4	O
AN/TPS	O
-117	O
acquired	O
in	O
2002	O
.	O
</s>
<s>
AN/FPS	B-Application
-117	I-Application
-	O
Standard	O
fixed	O
version	O
produced	O
by	O
Lockheed	O
Martin	O
.	O
</s>
<s>
AN/TPS	B-Application
-77	I-Application
-	O
Transportable	O
version	O
produced	O
by	O
Lockheed	O
Martin	O
.	O
</s>
