MIMO SAR in High-Resolution Wide-Swath Imaging
Efficient SAR imaging techniques should provide high-resolution imagery over a wide area of surveillance, but it is a contradiction due to the minimum antenna area constraint. The illuminated area must be restricted, so as to avoid ambiguous returns. Conventional methods use either a small portion of a large Tx/Rx antenna array or a separate transmit aperture to illuminate a large footprint on the ground; however, these methods cannot provide efficiently high-resolution wide-swath (HRWS) remote sensing capability. MIMO SAR provides potential solutions to resolving the disadvantages of conventional single-antenna SAR in HRWS remote sensing. Consider a MIMO SAR system with a transmitting array ...
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