Chlorophyll Detector

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Chlorophyll Detector

• Life in the Atacama Design ReviewDecember 19,
  2003
• David Bradley
• Fayette Shaw
• Trey Smith
• Alan Waggoner
• Shmuel Weinstein
• Carnegie Mellon University

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Key Requirements

• Chlorophyll Detector
• Must detect chlorophyll at small scale
• Two probes (far and near)
• Must be integrable
• Size
• DC voltage source
• Data easily logged

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Chlorophyll Detection Ops
Long-range bumper
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Chlorophyll Detection

• Long-range chlorophyll detector
• Reflectance
• Perceptor imager
• Dual-use VNS
• Science on the Fly?
• Chlorophyll bumper (short range)
• Reflectance (same as above)
• Fluorescence Imager (FI) - requires active
  illumination
• Point fluorometer (Opti-Science)
• Dual-use fluorescence imager
• APD laser (not feasible for September)
• Survey samples and detailed samples

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Long-Range Chlorophyll Detector
If we have both VNS and Perceptor imager, can
correlate data
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Chlorophyll Bumper
(reflectance, as before)
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Chlorophyll Detector

• Perceptor
• Pros
• Imager
• Being developed in-house
• Easy to integrate
• Possibly integrate into SPI
• Possible far-field detection
• Cons
• Reflectance only
• Threshold needs work

Opti-Science Pros Company seems
responsive Fluorescence Cons Point sample
only Black box Needs more testing / data Active
illumination / short range
Dual FI Pros Imager Two usages for single
device Being developed in-house Easy to
integrate Cons Small FOV Daytime issues Little
time to make versatile
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Recommendations

• Perceptor
• ?Both far-field and near-field chlorophyll
  detection
• Try single camera approach
• Refine thresholding algorithm
• Explore dual-use for SPI