TY - GEN AU - Fernández Ros, Manuel AU - Gázquez Parra, José Antonio AU - Novas Castellano, Nuria AU - García Salvador, Rosa María PY - 2013 SN - 978-84-616-2723-3 UR - http://hdl.handle.net/10835/15768 AB - The set formed by the earth’s crust and the inner edge of the ionosphere form a resonant cavity where there is electrical activity due to atmospheric phenomena such as rays, giving rise to electromagnetic signals into the ELF band. The interest in... LA - en PB - CMMSE KW - ELF KW - resonant cavity KW - PSD KW - transform KW - density KW - spectral KW - power KW - Schumann KW - periodogram TI - Power spectral density estimation of ELF signals by averaged of periodograms ER -