TY - GEN
T1 - Adaptive DSP algorithm for calibrating drop size distribution rain gauges
AU - Lane, John
AU - Kasparis, Takis
AU - McFarquhar, Greg Michael
PY - 1997
Y1 - 1997
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:0031387928
SN - 0819424838
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 465
EP - 473
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Kadar, Ivan
PB - Society of Photo-Optical Instrumentation Engineers
T2 - Signal Processing, Sensor Fusion, and Target Recognition VI
Y2 - 21 April 1997 through 24 April 1997
ER -