<s>
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
is	O
a	O
Chinese	O
fire	O
control	O
radar	O
developed	O
for	O
Type	O
76	O
twin	O
37	O
mm	O
naval	O
gun	O
as	O
CIWS	O
,	O
and	O
it	O
incorporates	O
features	O
of	O
Italian	O
RTN-10X	O
and	O
RTN-20X	O
sold	O
to	O
China	O
in	O
1992	O
.	O
</s>
<s>
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
is	O
frequently	O
but	O
erroneously	O
confused	O
and	O
misidentified	O
as	O
another	O
Chinese	O
naval	O
radar	O
Type	O
346	O
due	O
to	O
the	O
lack	O
of	O
publicized	O
information	O
in	O
the	O
development	O
of	O
the	O
latter	O
.	O
</s>
<s>
To	O
meet	O
the	O
urgent	O
Chinese	O
naval	O
need	O
of	O
CIWS	O
before	O
the	O
availability	O
of	O
more	O
advanced	O
CIWS	O
such	O
as	O
Type	O
730	O
CIWS	O
,	O
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
is	O
developed	O
as	O
a	O
stopgap	O
measure	O
by	O
developing	O
a	O
less	O
capable	O
CIWS	O
using	O
Type	O
76	O
twin	O
37mm	O
guns	O
.	O
</s>
<s>
The	O
muzzle	B-Application
velocity	I-Application
of	O
twin	O
37mm	O
is	O
1km	O
per	O
second	O
,	O
and	O
the	O
maximum	O
rate	O
is	O
800	O
round	O
per	O
minute	O
,	O
with	O
a	O
range	O
of	O
3km	O
.	O
</s>
<s>
However	O
,	O
early	O
developmental	O
trials	O
have	O
revealed	O
that	O
the	O
original	O
fire	O
control	O
radar	O
Type	O
342	O
used	O
proved	O
to	O
be	O
rather	O
inadequate	O
in	O
tracking	O
sea-skimming	O
anti-ship	O
missiles	O
,	O
consequently	O
,	O
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
was	O
developed	O
as	O
a	O
replacement	O
,	O
incorporating	O
technologies	O
of	O
Italian	O
RTN-10X	O
and	O
-20X	O
radars	O
purchased	O
in	O
the	O
early	O
1990s	O
.	O
</s>
<s>
To	O
increase	O
the	O
firepower	O
,	O
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
is	O
designed	O
to	O
control	O
two	O
twin	O
37mm	O
gun	O
mounts	O
simultaneously	O
against	O
the	O
same	O
target	O
,	O
thus	O
doubling	O
the	O
volume	O
of	O
fire	O
and	O
increase	O
the	O
probability	O
of	O
kill	O
.	O
</s>
<s>
Although	O
the	O
CIWS	O
incorporating	O
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
and	O
two	O
twin	O
37mm	O
gun	O
mounts	O
has	O
proved	O
to	O
be	O
effective	O
against	O
subsonic	O
sea-skimming	O
anti-ship	O
missile	O
flying	O
as	O
low	O
as	O
just	O
four	O
meters	O
above	O
sea	O
level	O
,	O
it	O
nonetheless	O
has	O
been	O
phased	O
out	O
of	O
Chinese	O
service	O
when	O
more	O
advanced	O
CIWS	O
of	O
Gatling	O
design	O
such	O
as	O
Type	O
730	O
CIWS	O
became	O
widely	O
available	O
.	O
</s>
<s>
Another	O
cheaper	O
replacement	O
of	O
CIWS	O
based	O
on	O
37mm	O
guns	O
and	O
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
is	O
Soviet/Russian	O
AK-630	O
,	O
which	O
is	O
installed	O
on	O
Type	O
054	O
frigate	O
.	O
</s>
<s>
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
is	O
one	O
of	O
the	O
most	O
misidentified	O
Chinese	O
radars	O
because	O
it	O
is	O
frequently	O
but	O
erroneously	O
referred	O
by	O
many	O
as	O
several	O
other	O
Chinese	O
radars	O
due	O
to	O
confusion	O
.	O
</s>
<s>
Additionally	O
,	O
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
is	O
also	O
misidentified	O
with	O
two	O
other	O
fire	O
control	O
radars	O
of	O
its	O
same	O
class	O
:	O
Type	O
347	O
and	O
Type	O
349	O
.	O
</s>
<s>
The	O
antenna	O
of	O
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
differs	O
from	O
both	O
Type	O
347	O
and	O
Type	O
349	O
radars	O
in	O
that	O
most	O
of	O
the	O
cone	O
is	O
missing	O
,	O
only	O
the	O
base	O
remains	O
,	O
so	O
the	O
antenna	O
of	O
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
has	O
a	O
very	O
large	O
circular	O
flat	O
surface	O
,	O
resulting	O
in	O
Type	B-Algorithm
348	I-Algorithm
radar	I-Algorithm
resembles	O
a	O
scaled	O
down	O
version	O
of	O
another	O
larger	O
fire	O
control	O
radar	O
for	O
larger	O
caliber	O
guns	O
(	O
76mm	O
or	O
greater	O
)	O
,	O
Type	B-Algorithm
344	I-Algorithm
.	O
</s>
