SNR estimation in DW1000

Hello

I was wondering if there is any way to estimate the Signal-to-Noise Ratio (SNR) of the received signal in DW1000 chipsets.
The following post was posted regarding this issue. However, in the answer part, the delta parameter was not defined.
https://forum.qorvo.com/t/how-to-calculate-the-signal-to-noise-ratio-snr-of-dw1000/5585/3