  At a future linear collider, very precise measurements, typically with errors
of <1%, are expected to be achievable. Such an accuracy yields sensitivity to
quantum corrections, which therefore must be incorporated into theoretical
calculations in order to determine the underlying new physics parameters from
linear collider measurements. In the context of the chargino--neutralino sector
of the minimal supersymmetric standard model, this involves fitting one-loop
predictions to prospective measurements of cross sections, forward-backward
asymmetries and the accessible chargino and neutralino masses. Taking recent
results from LHC SUSY and Higgs searches into account, we consider three
phenomenological scenarios, each displaying characteristic features. Our
analysis demonstrates how an accurate determination of the desired parameters
is possible, and could additionally provide access to the stop masses and
mixing angle.
