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post #20 of (permalink) Old 06-10-2019, 07:01 PM
Nick1
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Math:- "Did you know if it's more or less precise than an IMU ?"


I thought the IMU offers relative positioning but wont accurately show the exact heading,

A super magnet would 'Bend the heading reading' from the IMU as it passes by. ( talking indoors, at close range, as an extreme case.)
Does the IMU heading need to be realigned by a GPS/other compass occasionally, or often like every minute?



For indoor work the IMU or Lidar or RealView is essential and the GPS is useless.
Outdoors, the GPS system is quite robust and exact accuracy can be closely achieved, whereas the IMU has no chance since that the earths magnetic field is not a perfect shape and external magnetic forces effect you differently from point to point.

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