Multiple region finite-difference time-domain modeling of duct cavities
Name
57174737-MIT.pdf
Description
Full printable version
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25.65 MB
Format
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Checksum (MD5)
5ed69b0fe614655c1993f08e0178c45d
Author(s)
Zhang, Beijia, 1980-
Advisor(s)
Robert T. Atkins and Jin Au Kong.
Date Issued
2004
Publisher
Massachusetts Institute of Technology
Abstract
Although many radar cross section prediction techniques exist, none have proven to be completely satisfactory when applied to large cavities. Exact numerical techniques can accurately predict RCS, but are too computationally expensive to be used for many cavity geometries. High frequency techniques are computationally efficient but often are inaccurate in predicting the RCS of cavities. This inaccuracy becomes particularly apparent when the wideband range resolved signature is desired. To overcome these limitations, this thesis investigates the possibility of modeling large duct cavities in a piecewise manner using a finite-difference time-domain approach, modified to successively model individual subsections of the cavity. This change improves the computational efficiency of FD-TD while maintaining a high level of accuracy.
Description
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.
Includes bibliographical references (p. 213-218).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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