HF TDoA multilateration (1)
This blog post contains an analysis of TDoA multilateration applied to signal on 13413.4 kHz using a number of KiwiSDRs located in Europe.
For now the assumption used for making the KiwiSDR TDoA maps is that signals propagate with speed of light along the ground. Here we compare the measured delay differences with the ones obtained from this assumption.
All plots shown in this blog post are generated using octave/matlab .mat files available when using the updated KiwiSDR TDoA algorithm.
The cross-correlations for all combinations of used KiwiSDRs, normalized to have their maximum at unity, are shown below.
https://hcab14.blogspot.com/2020/04/hf-tdoa-multilateration-1.html