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A comment on U.S. military shoots down suspected Chinese surveillance balloon. Parent comment

Re:U.S. military shoots down suspected Chinese surveillance ... by Red_Leaves_Flyy on Saturday February 04, 2023 @11:22PM (#34661828)
I know nothing of radar, but could the radar be shaped like routers beam forming? Couldn’t the radar also be switched off over the majority of inconsequential areas?
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Re:U.S. military shoots down suspected Chinese surveillance ... by JumpCrisscross on Sunday February 05, 2023 @01:13AM (#34662441)
> could the radar be shaped like routers beam forming?

Yes, SAR [1].

[1] https://www.earthdata.nasa.gov/learn/backgrounders/what-is-s...

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Re:U.S. military shoots down suspected Chinese surveillance ... by 4gotunameagain on Sunday February 05, 2023 @02:51AM (#34662850)
SAR is just a method to virtually increase the aperture of the antenna with a moving platform, it is unrelated to the localisation of the beam
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