The tomographic image of a single cylindrical PEC object is obtained using diffraction tomography theorem after multiple transmissions of independent and identically distributed (iid) UWB random noise waveforms. The final tomographic image of the cylinder is successfully achieved by averaging all obtained images from multiple transmissions. For each transmission, iid band-limited white Gaussian noise waveform over a frequency range from 8-10 GHz is transmitted. Several numerical simulations in spatial frequency domain are performed, and the tomographic images are generated based on the backward scattering data of each transmitted iid UWB noise waveform. Mean square error is calculated to measure the image quality of the reconstructed tomographic image as well.