Design and Analysis of Spaceborne Hyperspectral Imaging System for Coastal Studies
Remote Sensing,
Journal Year:
2025,
Volume and Issue:
17(6), P. 986 - 986
Published: March 11, 2025
Hyperspectral
payloads
with
high
spatial
and
spectral
resolution,
combined
a
wide
field
of
view,
are
crucial
for
tackling
the
complexity
coastal
estuarine
water
ecosystems,
enabling
effective
monitoring
quality
ecological
conditions.
This
study
introduces
modular
spectrometer
design
utilizing
multiple
sub-modules
in
an
extended
slit
configuration.
The
system
delivers
resolution
5
nm
(400–1000
nm)
10
(1000–2500
nm),
20
m,
swath
width
80
km.
Smile
keystone
distortions
maintained
below
1/5
pixel.
Using
Modran
to
simulate
solar
irradiance,
SNR
different
targets
under
typical
background
conditions
is
calculated.
Compared
conventional
designs,
proposed
approach
provides
compactness
fidelity,
effectively
addressing
size
optical
aberration
challenges.
simulation
results
confirm
system’s
robustness,
setting
benchmark
next-generation
coast
observation
missions,
particularly
monitoring,
underwater
exploration,
dynamic
environmental
change
tracking.
Language: Английский
Broadband coherent anti-Stokes Raman scattering (BCARS) microscopy for rapid, label-free biological imaging
Review of Scientific Instruments,
Journal Year:
2025,
Volume and Issue:
96(4)
Published: April 1, 2025
Broadband
coherent
anti-Stokes
Raman
scattering
(BCARS)
microscopy
is
a
label-free
imaging
approach
that
provides
detailed
chemical
information
at
high
spatial
resolution
in
sample
through
nonlinear,
excitation
of
molecular
vibrations
and
detection
spectra.
While
its
utility
for
biological
has
been
demonstrated,
many
aspects
this
technique
must
mature
before
it
can
be
widely
adopted.
One
the
areas
required
improvement
speed—most
BCARS
implementations
involve
rastering,
which
limits
speed.
Beam
scanning
provide
faster
but
presents
some
unique
challenges.
Here,
we
describe
beam-scanning
system
improves
twofold
speed
by
fivefold
over
previous
implementation.
These
enhancements
were
enabled
an
supercontinuum
power
use
sCMOS
camera
data
transfer
rate
low
read
noise.
Implementation
correction
significant
pixel-to-pixel
background
photon
response
nonuniformity.
We
report
on
method
implemented
calibrating
correcting
differences
Language: Английский