NDLI: Fresnel-Corrected Second-Order Interfrequency Correlations for a Surface-Scatter Channel

Content Provider	IEEE Xplore Digital Library
Author	McDonald, J.
Copyright Year	1972
Abstract	The correlation of the transfer function taken simultaneously at two different frequencies is computed for a random surfacescatter channel. The analysis is limited to transmission in the specular direction but uses a Fresnel-corrected model. It is therefore applicable to channels excited by a wide beam transmitter. Using this model it is possible to explain why in certain circumstances channel activity at two closely spaced frequencies is uncorrelated while in other cases correlation may be observed at widely spaced frequencies. Some guidelines for predicting various modes of channel behavior are derived. The Fresnel-corrected model is also used to explore the duration of the reverberant impulse response of the channel. The results are presented in a broad-band Sonar context but they can easily be generalized. Comparisons with the Fraunhofer limit are made in order to establish what advantages are offered by the Fresnel model.
Starting Page	138
Ending Page	145
Page Count	8
File Size	826756
File Format	PDF
ISSN	00906778
Volume Number	22
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1974-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical scattering Signal design Transfer functions Transmitters Sonar Time factors Scattering parameters Frequency measurement Communications Society Design engineering
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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