<s>
The	O
field	B-Algorithm
of	I-Algorithm
regard	I-Algorithm
(	O
abbreviated	O
FOR	O
)	O
is	O
the	O
total	O
area	O
that	O
can	O
be	O
captured	O
by	O
a	O
movable	O
sensor	O
.	O
</s>
<s>
The	O
field	B-Algorithm
of	I-Algorithm
regard	I-Algorithm
is	O
the	O
total	O
area	O
that	O
a	O
sensing	O
system	O
can	O
perceive	O
by	O
pointing	O
the	O
sensor	O
,	O
which	O
is	O
typically	O
much	O
larger	O
than	O
the	O
sensor	O
's	O
FOV	O
.	O
</s>
