<s>
Feed-through	B-Algorithm
null	I-Algorithm
follows	O
the	O
duplexer	O
and	O
is	O
commonly	O
used	O
with	O
continuous-wave	B-Algorithm
radar	I-Algorithm
to	O
improve	O
performance	O
.	O
</s>
<s>
The	O
transmitter	O
is	O
constantly	O
issuing	O
high	O
power	O
RF	O
with	O
continuous	B-Algorithm
wave	I-Algorithm
radar	I-Algorithm
.	O
</s>
<s>
Feed-through	O
nulling	O
significantly	O
reduces	O
the	O
bleed-through	O
signal	O
,	O
which	O
can	O
be	O
used	O
to	O
increase	O
receiver	O
sensitivity	O
in	O
continuous	B-Algorithm
wave	I-Algorithm
radar	I-Algorithm
.	O
</s>
<s>
Passive	O
feed-through	O
nulling	O
is	O
not	O
used	O
with	O
CW	B-Algorithm
radar	I-Algorithm
altimeters	O
because	O
this	O
eliminates	O
the	O
ground-bounce	O
signal	O
.	O
</s>
