maniacal_gaff@lemmy.worldtoTechnology@lemmy.world•‘It’s the perfect place’: London Underground hosts tests for ‘quantum compass’ that could replace GPSEnglish
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15 days agoEven a perfect sensor will accumulate errors in the nav solution over time because there’s no such thing as a perfect gravity model. No free-running INS will ever replace GPS long term. This shit is so frustrating to see in the press.
I don’t think you’ll ever see an INS going months without needing a correction. Imperfect gravitational compensation applies directly to the specific force measurements and those errors are then accumulated twice.