Amazon’s Drone Dream Sets Off Race to Build Better Sensor
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In the quest to build drones that can help companies like Amazon.com Inc. make door-to-door deliveries, engineers are racing to overcome a fundamental challenge: helping unmanned, suitcase-sized aircraft see where they’re going.
The answer is developing sensors that are smart enough to keep the drones from smacking into buildings, people and anything else that would impede travel -- yet small and light enough that the machines can stay aloft.