Preliminary results of 3D SAR imaging using a sparse antenna array at K-band

3D radar imaging at K-band is performed by using a sparse linear antenna array for obtaining resolution in range, antenna array direction and in cross range, by moving the antenna array perpendicular to the antenna array direction. The sparse antenna array is designed as a patch antenna with 8 transmitting element on each end of 16 sparsely distributed receiving antenna elements. The data is thus registered in a bistatic geometry. Preliminary 3D-image result is shown of a private car and a reference corner reflector. The image result is close to expected quality in terms of resolution and side lobe levels.