A familiar cliché in autonomy research is that we want unmanned systems to be like a dog, i.e. independently capable of some tasks, but fundamentally subject to the control of a human operator. Researchers at Auburn University evidently felt “like a dog” wasn’t adequate and went for the real thing.
In Part One of our series on GPS, we discussed its uses, problems, and alternatives. In Part Two, we take a look at the role of GPS in Unmanned Ground Vehicles (UGV).
Inertial Navigation System
Unmanned Aerial Vehicles (UAV) and ground vehicles often use a combination of GPS and Inertial Navigation System (INS). INS depends on input from motion sensors (accelerometers) and rotation sensors (gyroscopes). Through a process known as “dead reckoning,” the vehicle’s current position is calculated utilizing time passed from previous locations and estimates of speed.
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GPS is cheap, available, accurate, and wildly successful. That has freaked out some people. To learn about GPS vulnerabilities, proposed enhancements, and possible alternative navigational systems, read here.
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