There could hardly be a soul alive today, not even in the most remote corner of the world, who has not marveled at the sight and sound of a little quadrotor buzzing past overhead. They are a modern phenomenon, a long dreamt-of capability, that seemingly all of a sudden burst onto the scene in the early 2000s and whose uses continue to evolve and multiply.
They didn’t come out of nowhere, however. No technology ever does. What was “sudden” about their arrival was that a number of consumer technologies required to make them feasible and affordable happened to reach a threshold level of maturity at around the same time: reliable digital wireless communications, microcontroller computing power, and battery endurance.
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https://ieeexplore.ieee.org/document/9665666
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