Moving targets imaging for stepped frequency radar

During the coherent processing in a stepped frequency radar, the velocity error usually affects the obtained range profile greatly. Two methods have been given to extract the target from overlapped high resolution range profiles and analyzed to show how spurious peaks appear. To surmount the influence of spurious peaks caused by velocity error, a reverse count algorithm is provided. Another algorithm is addressed to overcome the shortcomings of velocity error by amplitude interpolating. The performances of these suggested methods are analyzed and demonstrated via simulations, which indicate that these suggested methods function well for stepped frequency radar and provide a foundation for high resolution imaging.