The Optical Transient Detector (OTD): Instrument Characteristics and Cross-Sensor Validation

Boccippio, D.J.; Koshak, w.; Blakeslee, R.; Driscoll, K.; Mach, D.; Buechler, D.; Boeck, W.; Christian, H.J.; Goodman, S.J.
April 2000
Journal of Atmospheric & Oceanic Technology;Apr2000, Vol. 17 Issue 4, p441
Academic Journal
Lightning data from the U.S. National Lightning Detection Network (NLDN) are used to perform preliminary validation of the satellite-based Optical Transient Detector (OTD). Sensor precision, accuracy, detection efficiency, and biases of the deployed instrument are considered. The sensor is estimated to have, on average, about 20--40-km spatial and better than 100-ms temporal accuracy. The detection efficiency for cloud-to-ground lightning is about 46%-69%. It is most likely slightly higher for intracloud lightning. There are only marginal day/night biases in the dataset, although 55- or 110-day averaging is required to remove the sampling-based diurnal lightning cycle bias.


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