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7 reasons every autonomous vehicle needs an accurate IMU

Author : Mike Horton is the CTO of Aceinna

03 August 2018

An inertial measurement unit (IMU) is a device that directly measures the three linear acceleration components and the three rotational rate components (6-DOF) of a vehicle. An IMU is unique among the sensors typically found in an autonomous vehicle because an IMU requires no connection or knowledge of the external world.

A self-driving car requires many different technologies, for example - LIDAR to create a precise 3D image of the local surroundings, radar for ranging targets using a different part of the EM spectrum, cameras to read signs and detect colour, high-definition maps for localisation, and more. Unlike the IMU, each of these technologies involves the external environment in order to provide data back to the software stack for localisation, perception, and control. This unique “independent” property of the IMU, makes it a core technology for both safety and sensor-fusion.

The following list is just a start, additional reasons and benefits of an accurate IMU are welcomed as responses to this article.

Read the full article in the August issue of DPA




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