DocumentCode
788398
Title
Characteristic Impedance of a Medium From Its Step Response: A Simple Second-Order Approximation
Author
Resnick, Jeffrey R.
Author_Institution
Gulf Science and Technology Company, Pittsburgh, PA 15230
Issue
3
fYear
1982
fDate
7/1/1982 12:00:00 AM
Firstpage
411
Lastpage
413
Abstract
A second-order approximation is obtained which relates Z(t), the characteristic impedance of a one-dimensional scattering medium, to S(t), the time integral of the reflectance. Specifically z1/2(t) = z1/2(0) [1 - S(2t) + ¿2S2(2t)]. The simple form taken by the quadratic term seems not to have been explicitly recognized in the past.
Keywords
Antennas and propagation; Conductivity; Electromagnetic modeling; Electromagnetic propagation; Electromagnetic radiation; Electromagnetic reflection; Electromagnetic refraction; Impedance; Optical imaging; Optical reflection;
fLanguage
English
Journal_Title
Geoscience and Remote Sensing, IEEE Transactions on
Publisher
ieee
ISSN
0196-2892
Type
jour
DOI
10.1109/TGRS.1982.350464
Filename
4157320
Link To Document