Abstract: A direction-of-arrival (DOA) estimation approach for multiple incident signals is proposed based on space-timecoding (STC) digital metasurfaces. The STC metasurface modulates the incident ...

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I mostly keep all four paws on the ground. It’s hard to imagine living out in space. I asked my friend Erica Crespi about it. She’s a biologist at Washington State University. She studies how animals ...

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