Rotating Parabolic-Reflector Antenna Target in SAR Data : Model, Characteristics, and Parameter Estimation
Joint Authors
Qin, Yu-Liang
Deng, Bin
Wang, Hong-Qiang
Zhu, Sha
Li, Xiang
Source
International Journal of Antennas and Propagation
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-04-03
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Parabolic-reflector antennas (PRAs), usually possessing rotation, are a particular type of targets of potential interest to the synthetic aperture radar (SAR) community.
This paper is aimed to investigate PRA’s scattering characteristics and then to extract PRA’s parameters from SAR returns, for supporting image interpretation and target recognition.
We at first obtain both closed-form and numeric solutions to PRA’s backscattering by geometrical optics (GO), physical optics, and graphical electromagnetic computation, respectively.
Based on the GO solution, a migratory scattering center model is at first presented for representing the movement of the specular point with aspect angle, and then a hybrid model, named the migratory/micromotion scattering center (MMSC) model, is proposed for characterizing a rotating PRA in the SAR geometry, which incorporates PRA’s rotation into its migratory scattering center model.
Additionally, we in detail analyze PRA’s radar characteristics on radar cross-section, high-resolution range profiles, time-frequency distribution, and 2D images, which also confirm the models proposed.
A maximal likelihood estimator is developed for jointly solving the MMSC model for PRA’s multiple parameters by optimization.
By exploiting the aforementioned characteristics, the coarse parameter estimation guarantees convergency upon global minima.
The signatures recovered can be favorably utilized for SAR image interpretation and target recognition.
American Psychological Association (APA)
Deng, Bin& Wang, Hong-Qiang& Qin, Yu-Liang& Zhu, Sha& Li, Xiang. 2013. Rotating Parabolic-Reflector Antenna Target in SAR Data : Model, Characteristics, and Parameter Estimation. International Journal of Antennas and Propagation،Vol. 2013, no. 2013, pp.1-13.
https://search.emarefa.net/detail/BIM-482714
Modern Language Association (MLA)
Deng, Bin…[et al.]. Rotating Parabolic-Reflector Antenna Target in SAR Data : Model, Characteristics, and Parameter Estimation. International Journal of Antennas and Propagation No. 2013 (2013), pp.1-13.
https://search.emarefa.net/detail/BIM-482714
American Medical Association (AMA)
Deng, Bin& Wang, Hong-Qiang& Qin, Yu-Liang& Zhu, Sha& Li, Xiang. Rotating Parabolic-Reflector Antenna Target in SAR Data : Model, Characteristics, and Parameter Estimation. International Journal of Antennas and Propagation. 2013. Vol. 2013, no. 2013, pp.1-13.
https://search.emarefa.net/detail/BIM-482714
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-482714