“…However, the deramp operation will introduce a time shift [14], resulting in the appearance of ghost targets and azimuth resolution reduction at the scene edge, especially in the wide-swath coverage case. In order to accommodate the time shift, a modified de-rotation factor was introduced in [15,16], at the expense of Doppler frequency spectrum extension during the de-rotation operation, which requires an increased PRF and leads to limitations on mode design [4,5,17]. Moreover, in order to satisfy application requirements, such as interferometric and monitoring applications [18,19,20], a large coverage area is needed by increasing the antenna steering span [7], and adopting the azimuth multiple-channel technique [21].…”