By Topic

Mean arrival time and mean pulsewidth of signals propagating through a dispersive and random medium

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
K. Yeh ; University of Illinois, Urbana, IL, USA ; C. Yang

An electromagnetic pulse propagating through the ionosphere can be modified owing to dispersion as well as random scattering from electron density irregularities. As a result, the pulse arrival time and the pulsewidth are altered. In this paper we show how such quantities can be computed and related to the medium parameters. In this connection the two-frequency mutual intensity function enters in the formulation naturally. The results show that the mean arrival time is dominated by a term which indicates that the pulse is traveling at the group velocity corresponding to the carrier frequency. But there are also small but important corrections resulting from random scattering and higher order dispersion. Our results also show the importance of scattering and dispersion in lengthening the pulse. These results have important implications in satellite based navigational and communication systems.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:25 ,  Issue: 5 )