Cepstrum Application to Electrostatic Field on Lightning Prediction
نویسندگان
چکیده
ABSTRACT: Electrostatic field measurements under storms have been widely measured in several aims, for current investigation, basically, corona and other phenoma [Lance et al. 1991]. On the other hand the application of the electrostatic field measurement results attractive for lightning hazard warning system. But several phenomena perturb and cause not a full representation of the storm electrification. For this reason, signal processing is necessary and joined with other variables in a point of view as a lightning hazard warning system [Montaña et al., 2002]. This work presents a digital processing of electrostatic field signal, in particular, it presents the homomorphic deconvolution of the electrostatic field in different situations.
منابع مشابه
On the electrostatic field created at ground level by a halo
We investigate the effect of halo activity on the electrostatic field measured at ground level. We use electrostatic arguments as well as self-consistent simulations to show that, due to the screening charge in the ionosphere, the distant electrostatic field created by the uncompensated charge in a thundercloud decays exponentially rather than as the third power of the distance. Furthermore, si...
متن کاملPrediction of Epileptic Seizures in Patients with Temporal Lobe Epilepsy (TLE) based on Cepstrum analysis and AR model of EEG signal
Epilepsy is a chronic disorder of brain function caused by abnormal and excessive electrical neurons discharge in the brain. Seizures cause disturbances in consciousness that occur without prior notice, so their prediction ability, based on EEG data, can reduce stress and improve quality of life. An epileptic patient EEG data consists of five parts: Ictal, Inter-Ictal, pre-Ictal, Post-Ictal, an...
متن کاملMesospheric Electric Field Transients due to Tropospheric Lightning Discharges
A physical picture and quantitative two-dimensional electromagnetic modeling of mesospheric electric field transients produced by cloud-to-ground (CG) lightning discharges with short duration currents (<0.5 ms) are presented. The range of applicability of existing quasi-electrostatic models of sprites and the physical conditions under which relatively weak CG lightning discharges (thundercloud ...
متن کاملMechanism of lightning-associated infrasonic pulses from thunderclouds
[1] It has been pointed by C. T. R. Wilson in 1920 that sudden reduction of the electric field inside a thundercloud immediately following a lightning discharge should produce an infrasound signature. In the present work, a model based on linearized equations of acoustics with classical viscosity and atmospheric gravitational stratification effects is employed to study electrostatic production ...
متن کاملAn Algorithm to Nowcast Lightning Initiation and Cessation in Real-time
Cloud-to-ground lightning data from the National Lightning Data Network (NLDN), satellite visible and radar-derived products are used to train a lightning prediction algorithm. The radar reflectivity values are clustered to identify storm and real-time geometric, lagrangian and scalar attributes of those storms are computed. A lightning density field is ”precast” to form the target decision fie...
متن کامل