1. A method for generating a three-dimensional (3D) sceneimage of a scene using a MIMO array including a set of antennas, comprising steps of: selecting a subsets of the antennas as transmit antennas and receive antennas; transmitting radio frequency (RF) signal into the scene using the subset of transmit antennas while the MIMO array is moving at a varying velocity; receiving the RF signal reflected by the scene at the subset of receive antennas as MIMO data; aligning and regularizing the MIMO data; applying a compressive sensing (CS)-based reconstruction procedure to the aligned MIMO data to generate the 3D image of the scene.