Direction Finding with MUSIC using Circularly Polarized Fields

This paper presents the analysis and implementation of the MUSIC algorithm for direction finding using a 2×2 antenna array with circularly polarized fields, applied to a GNSS-R scenario. The proposed approach incorporates the simulated active fields of each sensor considering dual-circularly polarized patterns, i.e., co-pol and cross-pol fields are used in the direction-of-arrival estimation. The results demonstrate good resolution and scanning accuracy in both azimuth and elevation angles.