Maximum/minimum stable range measurements

thotro / arduino-dw1000

A library that offers functionality to use Decawave's DW1000 chips/modules with Arduino.

Apache License 2.0

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Maximum/minimum stable range measurements #63

Open thotro opened 8 years ago

thotro commented 8 years ago

Hey everybody,

I was told that stable measurements between 45cm and 70m are possible with the current driver version. More should be possible I think, so obviously the driver (or wirings) need improvement ;-)

What maximum/minimum measurements did you achieve with your boards?

Thanks and cheers, Thomas

verbatimt commented 8 years ago

When running 4 Anchors and 1 Tag on Arduino Pro Minis (8Mhz / 3.3V), I've seen accuracy within 35 - 40cm when using the DW1000Ranging_ANCHOR / DW1000Ranging_TAG examples and commenting out all code in the newRange of the Anchors (not sure if that has anything to do with it...?). I also created another Tag using an Arduino Zero running a 32-Bit ARM Cortex M0+ @ 48Mhz / 3.3v and saw sustainable accuracy levels around 25 - 30cm.

kshitijdadhekar commented 8 years ago

@ttaber How much can you expect with 1 anchor and 1 tag in an outdoor environment?

MikeS159 commented 8 years ago

With 1 anchor and 1 tag (using the DWM1000) I have been getting line of site ranges to about 25m, with accuracy around +/- 30cm.

kshitijdadhekar commented 8 years ago

@MikeS159 Thanks for replying, I am getting just the same. Also can you tell me one more thing. Now I want multiple Anchors and a Single tag. What modifications are required in the DWM1000_Anchor and respective Tag program. That would be really helpful!

MikeS159 commented 8 years ago

@kshitijdadhekar There are other example files which are used for multiple anchors (I believe), although I haven't go this working yet as I have only just built enough hardware. There are other questions about this, I suggest looking though some of the other issues to see how other people got it working.

kuek commented 8 years ago

hi guys, made some tests with a single anchor, just to see the internal offset for my location system. see pics attached. I just tested low range, but will do further testing outside.

then i moved over to 3 anchors, calibrated them and measured and recorded the raw data. in the plots below you can see some position measurements I made with my localisation code. the real position in the plot was 1m/1m.

hardware: img_20161113_143835612

offset test: 20161113-122505_calibration_aa01_160cm-20cm

localisation 20161113-144530_rohdaten_anchor

20161113-144530_rohdaten_estimatedpos