Accurate leaf reflectance measurements have
never been easier
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Making leaf
level reflectance measurements has never been easier, even
on tiny samples like individual conifer needles
No laptop required!
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UniSpec-SC Spectral Analysis System
Laboratory results
from a field portable instrument
The UniSpec-SC, commonly
referred to as a “Reflectometer”, is a single channel,
field portable instrument designed for measurement of
leaf/canopy reflectance. It features an innovative user
interface with integral computer and large, full color
LCD, built-in light source and extensive range of
accessories for measurement on individual leaves
(including needles) and vegetation. It is a truly,
self-contained system that does not require an external
PC for operation. In addition to revealing
dynamic features related to the physiological condition
of vegetation, spectral reflectance can also be used to
derive basic information about leaf or canopy structure,
nutritional status and pigment content. Leaf chlorophyll
content and nitrogen status are both indicators of
integrated leaf physiology. As “health” and
photosynthetic performance decline with stress or age,
tissue nitrogen and chlorophyll content also decline.
Both chlorophyll and nitrogen content can be readily
estimated from emperically calibrated estimates of leaf
reflectance. |
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Common Applications
Include..... |
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Leaf Level
Reflectance
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Ecosystem
Monitoring
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Remote
Sensing
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High Precision Detector
The heart of the UniSpec-SC is a miniature photodiode array detector
that features high sensitivity, repeatability and long term
calibration stability. The detector is compact,
sensitive to light and insensitive to external influences (i.e.
temperature) making it an ideal unit for demanding field
applications. The design of the detector allow for full
spectrum (310-1100 nm) measurements in less than 1 second.
Portability
A built-in, rechargeble 7.2V Li-Ion battery
provides power to the entire system. Typically, a fully charged
battery will ensure approximately 4-6 hours of continuous
operation in the field (dependent on use of internal light
source). An optional battery pack (external) is also available
for extended operation in the field.
Integral Light Source
A tungsten halogen light source is built into
the UniSpec-SC providing a steady, user-adjustable light source
required for measurement of leaf level reflectance in the VIS/NIR.
A built-in shutter is included for dark current compensation
ensuring accurate results.
Wide Range Of Accessories
A wide selection of accessories are available
for use with the UniSpec-SC including fiber optics, leaf clips,
FOV lens, cosine receptor, external battery pack and reference
standards. Let PP Systems configure a system that is ideal for
your application.
User Interface
Unlike other remote sensing instruments, the
UniSpec-SC features an innovative, ergonomic system console
designed specifically for demanding field conditions. It
has a built-in user interface including integral computer,
large, full color graphical LCD optimized for field use,
keyboard and touchpad for user inputs, RS232 and USB interface
and PCMCIA slot for unlimited data storage.
Powerful Software & Data Analysis
Easily configure the system to meet your
application. The UniSpec-SC is supplied with a powerful software
package running under Windows CE V5 that allows you to measure
and analyze reflectance with on-line help to guide you every
step of the way. In addition to measuring, viewing and storing
data, the system is capable of calculation of common vegetation
indices such as NDVI, mNDVI, PRI, WBI, summed green reflectance
and red/green ratio.
Software Features:
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Manual or auto-scan capability
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User selectable integration time
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Manual or automatic graph scaling
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Switch from raw data to
reflectance/absorbance data
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Calculation of common vegetation indices
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Perform mathematical functions on stored
data
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Manual or auto-save data
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GPS capability
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On-line help system
An interesting link for researchers interested
in optical sampling: SpecNet
Spectral Network. Click
here for more information on some exciting "Remote Sensing"
packages offered by PP Systems.
UniSpec-SC
Data Sheet
UniSpec-SC Applicaton Notes
UniSpec Publications
