Magnetically Sensing Airplanes
This new system is able to tell the location of a plane by measuring small fluctuations in Earth’s magnetic filed, caused by the large, moving metal object. The system is actually very accurate (within 7.5 meters), and only requires an array of small, cheap magnetic field sensors. The immediate benefits include better airplane tracking, especially when visibility is poor.
While the effects of an object on our planet’s magnetic field is very small, this could still be a way to sense and locate all kinds of other objects in the future.
