Method and apparatus for determining parameters of a transmissio

Details Method and apparatus for determining parameters of a transmissio Method and apparatus for determining parameters of a transmissio

1991-08-01

1992-09-22

Strecker, Gerard R.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324543, 379 24, G01R 2728, H04M 326

Patent

active

051500647

ABSTRACT:
A method and apparatus are provided for determining transmission line parameters of a length of single-wire transmission line that is deployed in seawater. The seawater is utilized as an electrically grounded return for the transmission line such that a two-port network is formed at either end of the transmission line. An alternating voltage of known amplitude and frequency is generated and applied to a first end of the length of transmission line. Open and short circuit parameters at the first end are then determined as a second end of the length of transmission line is alternately switched between a open and short circuit mode. The alternating voltage of known amplitude and frequency is then applied to the second end as the first end is alternately switched between an open and short circuit mode so that open and short circuit parameters may be similarly determined at the second end. The open and short circuit parameters determined at both ends are indicative of the transmission line parameters at the known frequency for the length of transmission line deployed.

REFERENCES:
patent: 4399402 (1983-08-01), Pelletier
patent: 4853616 (1989-08-01), Gard
"Engineering Circuit Analysis"; 3rd Edition; William H. Hayt, Jr. and Jack . Kemmery; .COPYRGT.1978 by McGraw-Hill, pp. 550-551.

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