Pulse Compression Linear Frequency Modulation (PCLFM) waveform is widely used in wideband radars such as Synthetic Aperture Radar (SAR) and Inverse Synthetic Aperture Radar (ISAR). But the LFM waveform suffers from range migration, if the target to be detected and it has a high velocity that the pulses cannot be coherently integrated. A novel method based on wideband matched filter is proposed to eliminate the effect of speed. Both theory analysis and simulations shows that the new method can integrate the energy of the echo reflected from the target effectively.