The paper gives a detailed overview of the algorithm of image reconstruction by using trajectory Doppler signal on the circular motion of the locator and the circular aperture synthesis. The monochromatic signal is considered. The offered method of reconstruction is non-projection one. In contrast to projection method it works equally well both in the near-field and far-field regions relative to the object aperture. Results of the model image reconstruction of single-point and three-point objects are represented. The interference on structures of reconstructed image and structures of ring spectra is shown.