How to measure the line impedance

Hello!
I have a problem with finding out the impedance of a transmission line.
Im working on a project and i need to find out a way how to calculate(find out) the impedance of a given line not using time domain reflectometry.
What measurements i have to do to find out the impedance using only frequency domain?
The frequency range is from 100khz-2Ghz.
Im out of ideas, any smarter people out there?

Thanks!

http://www.informit.com/articles/art...02225&seqNum=7

What kind of measurement instruments do you have available?

You can terminate the transmission line with a resistor in the range of the expected transmission line impedance and measure the input impedance versus frequency. ZL can be determined from the observed minimal and maximal impedance input impedance.

See also the completely awesome "Impedance measurement handbook" by Hp\Agilent\Keysight or whatever they are calling themselves this week.

http://cp.literature.agilent.com/lit.../5950-3000.pdf

Dates from before HP became a seller of expensive ink.

Regards, Dan.