A novel approach to synthesize the range profile via predesigned stepped-frequency waveforms

In stepped-frequency radar systems, the phase error due to target motion in each burst make range profiles blur. Conventional technology, such as motion compensation, requires velocity estimation to eliminate the distortion of the synthetic range profile. However, it suffers a major drawback, namely that it is difficult to achieve real-time accurate estimation of the velocity of the target. A novel technology is presented to achieve a focused target range profile via predesigned stepped-frequency waveforms. By applying a new stepped frequency waveform, HRRP of the target can be obtained by the Fourier transform without any other process. The simulation results demonstrate the effectiveness of the proposed technology.