Military scientists in the US are developing what they claim is a "spy in the sky" — a remote-controlled airborne detection system which can bounce radar off buildings to follow a vehicle through a city.
Pentagon's Defence Advanced Research Projects Agency is developing the new radar system which sees around corners and down into "urban canyons" — in fact, it can track vehicles across an entire city using just a few uncrewed aircraft.
Pentagon's Defence Advanced Research Projects Agency is developing the new radar system which sees around corners and down into "urban canyons" — in fact, it can track vehicles across an entire city using just a few uncrewed aircraft.
The agency is exploring how Multipath Exploitation Radar (MER) might work by driving vehicles around a simulated urban area and collecting returns from an overhead radar.
The scientists are aiming to combine the radar data with a three-dimensional map of the test environment to calculate how the radar reflects off and between vehicles and buildings. This process should highlight which signals in the returning radar data can be used to plot the target vehicle's path.
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