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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
84-21Modulation
reected from nearby objects, and the reected signal is mixed with the emitted signal to produce
th
e
su
m
an
d
di
erence
of th
e
tr
ansmitted
an
d
re
ceived
fr
equencies
. If th
e
ob
ject
an
d
th
e
mi
crowave
em
itter
ar
e
in re
lative
mo
tion,
th
e
re
ected
si
gnal
re
turns
to th
e
em
itter
sh
ied
in fr
equency
by th
e
Do
ppler
sh
i
fr
equency
f
D
:
f
v
c
f
D c
=
2 cos( )
α
(8
4
.33
)
where
v
i
s
t
he
r
elative
v
elocity
o
f
t
he
s
ource
a
nd
t
he
r
eecting
o
bject
(
m/s)
c
i
s
t
he
s
peed
o
f
l
ight
i
n
a
ir
(
3
.0 × 1
0
8
m/s)
f
c
is the frequency of the microwave (carrier) source (Hz)
α
i
s
t
he
a
ngle
o
f
i
ncidence
b
etween
t
he
s
ource
a
nd
t
he
r
eector
For
K-b
and
mi
crowave
so
urces
(2 ...
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Publisher Resources

ISBN: 9781439848913