| 摘要 |
<p>A pulse radar apparatus is provided with a coherent transmitting and receiving unit with N juxtaposed receiving antennas and N receivers forthe reception of echo signals and the processing thereof into two orthogonally phase-detected and digitised video signal components ir and qr, where r = 0, 1, 2, ..., N-1. A beamformer is provided to derive from said components the orthogonal components Ik and Qk of the video signal determined jointly by the N receivers in accordance with a receiving beam pattern k corresponding with a specific elevation interval, where k = 0, 1, 2, ..., N-1. The orthogonal components In, Qn and In+1, Qn+1 supplied through two adjoining beamformer output channels n and n+1, and derived from the video signals Pn, Pn+1 from echo signals of maximum amplitude received from moving targets, are used for determining the deviation (Aa) of the elevation value a, which elevation value corresponds with the centre between the receiving beam patterns n and n+1.</p> |
