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verifacation of calibration method

Question asked by kelvin on Nov 5, 2006
Latest reply on Nov 20, 2006 by opticyclic
There are  different calibration methods
1) classic 12-term error model(forward and reverse)
2) 8-term error model (TRL,Unknown Tru,etc)
3) 16-term error model
The 12-term error model calibate forward and reverse direction seperately. The 8-term error model ignore the crosstalk and have some redundancy.The 16-term error model is more complete and better for leakage environment.But the derived homogeneous system of equations  have singularity in mathematic computation.

I want to study on another 12-term error model for VNA calibration.
How can I  verify and evaluate the precision of  calibration?