New imaging approach for MPC-MAB HRWS synthetic aperture radar

High resolution and wide swath (HRWS) are the most important two requirements for modern synthetic aperture radar, but it is hard to satisfy these requirements at the same time. The advance of Multiple phase centre Multiple azimuth beam technology (MPC-MAB) had effectively released such conflict, and make the HRWS SAR imaging became possible. The principle of MPC-MAB SAR was investigated in this paper, and a new imaging approach based on adaptive down-chirp technology was proposed, imaging simulations were executed for both point and distributed target. All results proved that the imaging approach not only capable but also effective, and compared to traditional approach, it is can be easily operated and combined with classical imaging algorithms.