Based on the geometrical projection of scattering center on the line of radar sight

a technique for reconstructing the 3-D distribution of target is performed in the paper

using multiple 1-D range profiles in different aspect angles.After analyzing the principle of 3-D radar imaging and the mechanism for scattering centers association

an associating and imaging method based on clustering analysis is provided.The imaging experiments based on simulation and measurement data are developed

and experimental result shows the validity and robustness of the performed algorithm.