At Wireless Technology Park 2011, KDDI R&D Labs revealed for the first time a system which makes the direction radio waves are coming from visible. This system includes a 9-element array antenna, 8 cameras, a GPS, and an electronic gyroscope, and can overlay the direction radio waves are coming from on a display. It is used as a tool to design cells that are within range to receive radio waves from base stations.
“We usually use array antenna technology to estimate the horizontal direction.
Akihabara News, Highly Accurate Visualization of Radio Wave Arrival Directionsby KDDI R&D Labs
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