MDEK1001Outdoor

Wireless Connectivity Ultra-Wideband
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[color=#333333]Hi,[/color]
[color=#333333]I have 4 MDEK1001 RTLS units. I have to get the accuracy 10cm in 200m line of sight for the autonomous vehicle in outdoors. [/color]

[color=#333333]Firstly, I do not know which criteria should I consider for the outdoor condition? [/color]

[color=#333333]Secondly, I have tested the accuracy in the indoor office ( [/color][color=#333333][size=large][font=Times]3.058 m x 3.114m) [/font][/size][/color][color=#333333]where I placed 3 anchors [/color][color=#333333][font=Times][size=large]at (0,0,2), (0,2.972,2), (3,2.972,2) coordinates. I have conducted several experiments to test the accuracy of the tag in different positions which gives around 10-13 cm accuracy. However, the ranging and consequently the position estimation missed and it becomes worse[/size][size=large] as I go further fro[/size][size=large]m the anchors. The refresh rate in 10 Hz which means it gives 10 position per second. I think that the issue might be[/size][size=large] the question of[/size][size=large] low power design[/size][size=large]. [/size][size=large]Is there any[/size][size=x-small] [/size][/font][/color][color=#333333][size=large][font=Times][color=#000000][size=medium]equations for calculating effective range given a transmitting power ?[/size][/color][/font][/size][/color]

[font=Times][color=#333333][color=#000000][size=large]Finally, How can I implement the kalman filtering to improve the accuracy on my tag? which hardware and software should I use to configure the tag? I mean by using those data (ranging and [/size][/color][size=medium]estimated[/size][color=#000000][size=large] position) which I have [/size][/color][/color][size=small][color=#000000]gotten[/color][/size][color=#333333][size=large][color=#333333] from the serial port on the Jlink ?[/color][/size][/color][/font]
[color=#333333][size=large][font=Times][color=#000000][size=medium]Anyone can help me?[/size][/color][/font][/size][/color]

[color=#333333][size=large][font=Times][color=#000000][size=medium]Thanks [/size][/color][/font][/size][/color]

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Hi Sara,

the max range for DWM1001 is about 65m. This is because it is optimised for Ch 5, and the FW that comes with it uses 6.8 datarate. You can see this from its DataSheet.

Decawave have an application note on maximising range, please read this.

If you are testing with the tag outside the anchor’s space, then the location engine/solver algorithms may have to be designed for that, the ones used in PANS SW or TREK work the best when the tag is in the middle of the anchor space.

Regards
Z

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Hi Zoran;

Thanks for replay.
Could you please also let me know about Kalman filtering implementation?
[color=#333333][font=Times][color=#000000][size=large]How can I implement the kalman filtering to improve the accuracy on my tag? which hardware and software should I use to configure for the tag? I mean by using those data (ranging and [/size][/color][size=medium]estimated[/size][color=#000000][size=large] position) which I have [/size][/color][/font][/color][color=#333333][size=small][font=Times][color=#000000]gotten[/color][/font][/size][/color][color=#333333][font=Times][size=large] from the serial port on the Jlink ?[/size][/font][/color]