| 摘要 |
The invention concerns a method for determining parameters in a model of a transmission line. The method comprises obtaining (36) measurements of the line comprising reflection coefficient defining data and the total line capacitance, applying (38) true reflection coefficients obtained through the reflection coefficient defining data in an objective function for the line, which function comprises a sum of error signals, each comprising the difference between a model value of a reflection coefficient and a corresponding true reflection coefficient, minimising (40) the objective function by utilizing gradients of the objective function with respect to the transmission line parameters to be determined and employing a capacitive length and determining (42) at least two further transmission line parameters as combinations of a basic resistive transmission line parameter, a basic capacitive transmission line parameter and a basic inductive transmission line parameter of the transmission line model. |
