The shot-down Chinese spy balloon may have had synthetic aperture radar, the Washington Post reports
At the time, much about the balloon wasn't known publicly, but a new trove of Pentagon documents leaked on Discord show it — and up to four other previously unknown spy balloons like it — could have had a feature known as "synthetic aperture radar" that can see through certain objects, the Washington Post reported. Because SAR isn't taking photos and is instead using electromagnetic data to create a high-resolution image, the technology can "see" in the dark, as well as through clouds, smoke, soil, and rain.
The documents also reveal that certain functions of the balloons are still unknown to US intelligence, as certain sensors on the device are labeled as "unidentified" in photos.
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