NEFOCAST is a research project that aims at retrieving rainfall fields from channel attenuation measurements on satellite links. Rainfall estimation algorithms rely on the deviation of the measured E s /N 0 from the clear-sky conditions. Unfortunately, clear-sky measurements exhibit signal fluctuations (due to a variety of causes) which could generate false rain detections and reduce estimation accuracy. In this paper we first review the main causes of random amplitude fluctuations in the received E s /N 0 , and then we present an adaptive tracking algorithm based on two Kalman filters: one that tracks slow changes in E s /N 0 due to external causes and another which tracks fast E s /N 0 variations due to rain. A comparison of the outputs of the two filters confirms the reliability of the rainfall rate estimate.
The Potential of Smartlnb Networks for Rainfall Estimation / Luca, Facheris; Giannetti, F.; Moretti, M.; Reggiannini, R.; Petrolino, A.; Bacci, G.; Adirosi, E.; Baldini, L.; Melani, S.; Ortolani, A.. - ELETTRONICO. - (2018), pp. 120-124. (Intervento presentato al convegno 20th IEEE Statistical Signal Processing Workshop, SSP 2018 tenutosi a Friburgo, Germania nel 2018) [10.1109/SSP.2018.8450692].
The Potential of Smartlnb Networks for Rainfall Estimation
Luca, Facheris;
2018
Abstract
NEFOCAST is a research project that aims at retrieving rainfall fields from channel attenuation measurements on satellite links. Rainfall estimation algorithms rely on the deviation of the measured E s /N 0 from the clear-sky conditions. Unfortunately, clear-sky measurements exhibit signal fluctuations (due to a variety of causes) which could generate false rain detections and reduce estimation accuracy. In this paper we first review the main causes of random amplitude fluctuations in the received E s /N 0 , and then we present an adaptive tracking algorithm based on two Kalman filters: one that tracks slow changes in E s /N 0 due to external causes and another which tracks fast E s /N 0 variations due to rain. A comparison of the outputs of the two filters confirms the reliability of the rainfall rate estimate.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.