PSELab.zip - This is a compressed archive containing the program (PSELab.exe (ver.3.0)) and it's russian description (1,27 MB size).
PSELab.exe - PSELab.exe (ver.3.0) (1,31 МB size).
Sins_Simplex.zip - modified subVI "Downhill Simplex nD" block diagram, (Downhill Simplex Algorithm for estimating of optimal parameters) with example of complex exponential model optimal parameters estimation (LabVIEW 7.1 or later).
Prony (LabVIEW7.1).zip - least squares Prony method block diagram
with example (LabVIEW 7.1 or later).
To estimate AR parameters you can use the covariance method (LabVIEW SubVI CovarSub.vi is in this archive).