On Sat, Nov 16, 2019 at 12:41 AM, hwalker wrote:
I haven't actually looked at Rune's Python code but I believe he credits
nuclear_rambo for the tdr and the step impedance functions. Nuclear_rambo
calculates the initial impedance step correctly but then sign information is
lost for additional impedance steps along the length of the cable.
This approach is incorrect and leads to wrong results. It will give you even worse results with signed value.
I wanted to add this into NanoVNASharp MOD, but it shows incorrect results and there is no way to fix it.
Because approach is incorrect.
You can find correct approach in my MATLAB scripts:
