1
.
The
advantages
of
Remote
Sensing
are
,
for
example
,
repeated
reliable
____________________
,
global
____________________
and
access
.
2
.
The
disadvantages
of
Remote
Sensing
include
a
historically
low
____________________
,
____________________
conditions
(
clouds
,
haze
,
precipitation
)
,
timeliness
and
the
fact
that
it
is
still
expensive
.
3
.
Optical
sensors
(
passive
)
are
good
for
____________________
____________________
,
e
.
g
.
vegetation
condition
,
land
use
mapping
or
3D
image
application
.
4
.
Microwave
sensors
(
active
)
are
good
for
____________________
____________________
,
e
.
g
.
topographic
maps
,
topographical
deformation
extraction
or
flood
monitoring
.
5
.
Active
remote
sensing
instruments
send
out
a
signal
of
____________________
at
a
particular
wavelength
.
6
.
Passive
remote
sensing
instruments
either
use
the
Sun
as
the
source
of
radiation
or
they
use
radiation
____________________
by
the
Earth
?
s
surface
or
____________________
.
7
.
An
imagery
collection
system
is
a
combination
of
an
imaging
sensor
and
a
____________________
collection
platform
.
8
.
Collection
platforms
are
____________________
-
____________________
,
aerial
and
hand
-
held
.
9
.
A
collection
platform
may
carry
____________________
sensors
.
