Re: [wsjt-devel] FST4 Doppler Spread Overshoot Calculation

Hi Ryan, Many thanks for pointing out the error in calculating the value of Doppler Spread for FST4 decodes! You are (almost) 100% correct, and the bug will be fixed in the next release of WSJT-X. In Fortran subroutine lib/fst4_decode.f90 the line xi1=i - 1 + (sum2-0.25*sum1)/(sum2-s

[wsjt-devel] FST4 Doppler Spread Overshoot Calculation

Good Evening, I'm looking at lib/fst4_decode.f90, specifically the code where it calculates the frequency in the channel gain function, *g*, at which it reaches a certain percentage of the signal power. This can be found on line 999 of lib/fst4_decode.f90