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Hi, all:

I have tested the dwm1000 range distance, only about 70 meter? the office display about 290 meter, I need add some PA?
or how to do we can add the range?

Hi,

70m for the DWM1000 sounds quite good to me, I have read somewhere that the DW1000 is given for 100m range but that around 60-70m was the useful range. With which channel parameter are you reaching 70m?

Adding a PA to the DWM1000 will not be possible as the chip antenna is soldered on the module. It might be possible to make a custom DW1000 board with a PA but I am not even sure where to source UWB PA. Also it is very likely that the resulting output power will not be authorized anymore (currently UWB radios are working bellow the legal noise limit). I think Decawave would be better to answer this question.

The "easy" solution I see is to add more anchors to cover your working area.

/Arnaud

Hi,arnaud:

(1) Channel 2 and 5 can reach about 70m, why the Decawave porvide the range about 290m?
(2) yes, I also don't find the UWB PA, so we will add more anchors to cover whloe area.

I see now that the DWM100 spec is talking about 290m. I missed this information (and I have not run very long range test yet ...).

The chapter 9.1 of the DW1000 user manual is enlightening about range. Apparently to get the longer range you would need:
- 110KBps of data-rate
- Channel 4 and 6 should have longer rage because of wider bandwidth (and 4 is the lowest in frequency so it should have the longest range?)
- Use of a longer preamble will increase the range
- 64MHz PRF

I am curious to see what range can be achieve with these settings. Though it will certainly affect the possible update-rate of the ranging (longest packets occupy the air for a longer time).