Abstract: With the information processing techniques, an UWB-TWR experimental system was introduced. Because of the low precise location of the conventional imaging method based delay-and-sum beamformer, the weight obtained by minimal variance distortionless response and coherence factor methods applied to optimize the imaging process. And some experiments were done based onthe optimized method. It is concluded from the experiment results that the accurate location of the target could be given and the target-to-clutter ratio was increased by 9.41 dB.