Bistatic two-dimensional imaging of spinning targets

The two-dimensional (2-D) image of a spinning target obtained by monostatic radar is modified by the angle between the spinning axis and the radar line of sight (LOS), so it usually cannot describe the real size of the target. The T/R-R bistatic radar is proposed to solve this problem. First, the bistatic geometry and bistatic echo signals of a spinning target are modeled. Then, a novel 2-D imaging algorithm is presented based on the connections between the mono- and bistatic echoes of the same scatterer and the classical Hough transform (HT), allowing both the monostatic and bistatic 2-D images that coincide with the real target to be obtained simultaneously. The theoretical analysis is validated by the simulation and electromagnetic calculation.