Adaptive DSP algorithm for calibrating drop size distribution rain gauges

John Lane, Takis Kasparis, Greg Michael McFarquhar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The calibration of impact disdrometers has traditionally been a tedious process, whereby known diameter single water droplets are generated and allowed to fall from a height of 10 meters or more in order to obtain terminal velocity. An alternate method of calibration is proposed which eliminates the need of a single drop generator and associated drop shaft. The strategy behind this technique is to use an accumulation rain measurement instrument, such as a tipping bucket rain gauge, to provide a known signal for the purpose of training an adaptive calibration algorithm. The reference signal to this digital signal processing algorithm is the output of the impact disdrometer which is preprocessed by an impulse amplitude estimation algorithm. This calibration technique has been evaluated using data from UCF's Acoustic Rain Gauge Array, which estimates raindrop size distributions (1 mm drop diameter or more) by digitally sampling the acoustic signal from an array of acoustic impact sensors. This calibration technique should be applicable for use with other impact disdrometers.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsIvan Kadar
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages465-473
Number of pages9
ISBN (Print)0819424838
StatePublished - Dec 1 1997
EventSignal Processing, Sensor Fusion, and Target Recognition VI - Orlando, FL, USA
Duration: Apr 21 1997Apr 24 1997

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3068
ISSN (Print)0277-786X

Other

OtherSignal Processing, Sensor Fusion, and Target Recognition VI
CityOrlando, FL, USA
Period4/21/974/24/97

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Lane, J., Kasparis, T., & McFarquhar, G. M. (1997). Adaptive DSP algorithm for calibrating drop size distribution rain gauges. In I. Kadar (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 465-473). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 3068). Society of Photo-Optical Instrumentation Engineers.