NASA Uses Moonlight to Improve Satellite Accuracy
upstart writes:
NASA Uses Moonlight to Improve Satellite Accuracy - Technology Org:
NASA's airborne Lunar Spectral Irradiance, or air-LUSI, flew aboard NASA's ER-2 aircraft from March 12 to 16 to accurately measure the amount of light reflected off the Moon. Reflected moonlight is a steady source of light that researchers are taking advantage of to improve the accuracy and consistency of measurements among Earth-observing satellites.
"The Moon is extremely stable and not influenced by factors on Earth like climate to any large degree. It becomes a very good calibration reference, an independent benchmark, by which we can set our instruments and see what's happening with our planet," said air-LUSI's principal investigator, Kevin Turpie, a research professor at the University of Maryland, College Park.
The air-LUSI flights are part of NASA's comprehensive satellite calibration and validation efforts. The results will compliment ground-based sites such as Railroad Valley Playa in Nevada, and together will provide orbiting satellites with a robust calibration dataset.
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