SYNTHETIC APERTURE RADAR FOR SIMULTANEOUS IMAGING AND GROUND MOVING TARGET INDICATION

摘要

The invention relates to a synthetic aperture radar for simultaneous imaging and moving target indication, with an antenna configuration (10) that comprises at least one linear antenna (12, 14), formed from a plurality of subapertures (RX_N+1-RX_2*N, RX1-RX_N) arranged in a row in the flight direction (18), for receiving reflected signals, imaging means (20) embodied for generating SAR images by SAR/HRWS processing (22, 24, 26) of the separately recorded signals received from the individual subapertures (RX_N+1-RX_2*N, RX1-RX_N), and moving target indication means (28) embodied for estimating the velocity of a moving target by transforming (30) the received signals from the individual subapertures (RX_N+1-RX_2*N, RX1-RX_N) to the azimuthal frequency range, filtering (32) the transformed received signals for signal selection, and correlating (34) the selected signals for focusing on a moving target.