Accuracy of Loco Positioning system

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Calvin Chua
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Accuracy of Loco Positioning system

Post by Calvin Chua » Tue Apr 14, 2020 1:23 pm

Hi,

From the website, it mentioned the system will have an accuracy of 10cm. Is there any possible modifications such as location of the of the loco position node that able to increases its accuracy pls

Thanks and appreciate for any help



kristoffer
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Re: Accuracy of Loco Positioning system

Post by kristoffer » Wed Apr 15, 2020 6:56 am

The 10 cm is specified by Decawave, the manufacturer of the UWB chips we use. There is ongoing research in the area (for instance this paper https://arxiv.org/pdf/2003.09371.pdf) that might improve the performance, but there is no silver bullet as far as we know.

What performance do you get?

Calvin Chua
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Re: Accuracy of Loco Positioning system

Post by Calvin Chua » Wed Apr 15, 2020 7:20 am

Hi kristoffer,

Thanks for the reply. The error range I get is around 10cm- 12cm ish but I might need to achieve higher accuracy for my project

kristoffer
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Re: Accuracy of Loco Positioning system

Post by kristoffer » Wed Apr 15, 2020 7:57 am

I see. Would it be possible for you to use some other positioning technology with higher precision, like the Lighthouse?

Do you need higher precision in the full space or only in smaller areas (for precision landing for instance)? It might be possible to augment the position with local sensors?

Calvin Chua
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Re: Accuracy of Loco Positioning system

Post by Calvin Chua » Wed Apr 15, 2020 8:56 am

I am thinking about that as well. For my project, I just need a high accuracy on a small volume of space. Hence, my guess is changing the position of the decks to make them cover a smaller space might increases the accuracy.

kristoffer
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Re: Accuracy of Loco Positioning system

Post by kristoffer » Thu Apr 16, 2020 6:47 am

If you mean moving the Anchors closer, that will unfortunately not help. The error is fairly constant regardless of distance.

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