Determining The DOA of Jamming Signals Using Root-Music and MVDR Algorithms for Planar Elliptical Digital Antenna Array

The algorithms for determining the direction of arrival (DOA) to jamming signals for a planar elliptical digital antenna array (DAA) are presented. MVDR and Root-MUSIC are the considered, which make it possible to determine the elevation angle and azimuth to the jammers for a planar DAA. The calculation of direction for three correlated interferers having different elevation angles and azimuth is performed. The coordinates of the jammers are chosen so that the interference come at the maximum of the side lobes of the radiation pattern of the elliptical DAA. Using the method of the compensating radiation pattern, nulling is performed in the found directions.