Version 1 (modified by mark1, 7 years ago) (diff)

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FODIS and ILS

The aircraft has a downwelling light sensor, with a cosine collector mounted on the roof bringing light via a fiber optic cable to the instruments. Both CASI and Eagle have systems for measuring this light

  • ILS. The NERC ARSF CASI System incorporates an Incident Light Sensor (ILS) measuring downwelling radiation at the aircraft; this is Lumogen coated for enhancement of the blue response below 450 nm.
  • FODIS. The Eagle instrument incorporates a downwelling radiation sensor, similar to the CASI ILS, called the Fiber-Optic Downwelling Irradiance Sensor (FODIS).

Physical layout

DCALM's downwelling light collector (prior to cleaning!) mounted on the roof:

DCALM's downwelling light collector (prior to cleaning!)

Side view of DCALM, showing location of downwelling light collector:

Side view of DCALM, showing location of downwelling light collector