query on clock offset ratio

Wireless Connectivity Ultra-Wideband
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1

hi all,

while going through [color=#333333] Single-sided two-way ranging (SS TWR) ex_6a_SS example code i found that clock offset ratio has been found using the equation[/color]
[color=#333333]" clockOffsetRatio = dwt_readcarrierintegrator() * (FREQ_OFFSET_MULTIPLIER * HERTZ_TO_PPM_MULTIPLIER_CHAN_2 / 1.0e6) ;"[/color]

[color=#333333]is clock offset ratio found here in microsecond or in ppm?[/color]

[color=#333333]is there any document describing the synchronization mechanism that can be used for WSN(wireless sensor networks) using DWM1000 or on how to analyse and rectify clock skew in WSN implimentation?[/color]

[color=#333333]please reply[/color]

2

I think that there is a Decawave solution that is sold like IP (Intellectual Property). So this technology is not free.

3

Hi Dpkpv

it probably is possible to do what you are thinking of, i.e. to use carrier integrator to help with clock sync between number of units and do TDOA, however I am not aware of any such solution… it is probably something for a R&D/PhD …

Z