TTK1000 accuracy and RF profiles

Wireless Connectivity Ultra-Wideband
1

Hello,

Could anyone tell roughly the accuracy of the TTK1000 Kits?

My team has tried develop a wireless clock sync TDOA system using DWM1001-DEV boards as both anchors and tags and we get as best as 50 cm accuracy. I am trying to figure out how to improve the accuracy of my system so here are my questions.

  1. As far as I understand, the clock generating circuit on TTK1000’s anchor board uses TXCO which is better than the XTAL used on DWM1001-DEV. So would it help to improve an accuracy to use TXCO on anchor boards?

  2. I know from Sewio’s website that by using different channels or RF profiles for communicating blinks and sync messages, it would help reduce the collision. However, I couldn’t figure out what exactly the RF profiles are and where could I set those parameters. I’ve searched through DWM1000 User Manual and Datasheet but with no luck.

Thank you in advance.
Charuwalee

2

1: Yes. The TTK1000 anchors use TCXO’s. An Xtal is fine for the Tag.
2: Different channels for density yes but also to help with ETSI/FCC regulatory restrictions for different channels when used for indoor and outdoor systems. Normally this was CH2 and CH5 combos in the DW1000.

3

Many thanks, Kenneth.

I quite understand and agree what you’ve explained for my question 2. However, it’s still not clear for me what parameters are included in the RF profile.

Regards,
Charuwalee

4

Maybe you need to look at the Tag code example here.

5

After some digging in the code you gave, I think I found what I’m looking for. Thanks a lot!!