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This is a feasibility study for developing low-cost synthetic aperture radar (SAR) systems based on the IEEE 802.11ac protocol. The baseband module of IEEE 802.11ac is found to be similar to SAR, and its frequency coverage is wide enough to meet the requirement of high-resolution SAR imaging. By using the subbands merging technique, the spatial resolution can reach 0.5 m × 0.5 m.
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