Tracking devices vendor TRX Systems Inc. last week unveiled a plan to enable people or things to be tracked with pinpoint accuracy regardless of whether they are outside, inside or in the presence of electronic jamming. Global Positioning System devices can help track first responders, unmanned areal vehicles, soldiers and expensive assets, but require an inertial measurement unit (IMU) to work when GPS-signals are unavailable, such as in tunnels, inside buildings, or when electronic interference is present.
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