Resumen
To obtain an antenna array with isotropic radiation, a spherical antenna array (SAA) is the correct array configuration. The knowledge of the direction-of-arrival (DoA) of an incoming signal by the receiving antenna is used to localize the locations of analogous sources. It improves the adaptive beamforming of the receiving radiation pattern to enhance system sensitivity towards the required signal directions and reduce unwanted interferences. Therefore, DoA estimation using SAA is an important task and basic challenge in signal processing, such as source identification and separation, spatial filtering etc. It has industrial applications in spacecraft, military surveillance, astronomy, radar, and vehicular technology.