Study on Zero-Doppler Centroid Control for GEO SAR Ground Observation
Joint Authors
Wang, Zhuoqun
Hu, Bin
Zhang, Yun
Lian, Meng
Jiang, Yicheng
Source
International Journal of Antennas and Propagation
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-11-26
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
In geosynchronous Earth orbit SAR (GEO SAR), Doppler centroid compensation is a key step for imaging process, which could be performed by the attitude steering of a satellite platform.
However, this zero-Doppler centroid control method does not work well when the look angle of radar is out of an expected range.
This paper primarily analyzes the Doppler properties of GEO SAR in the Earth rectangular coordinate.
Then, according to the actual conditions of the GEO SAR ground observation, the effective range is presented by the minimum and maximum possible look angles which are directly related to the orbital parameters.
Based on the vector analysis, a new approach for zero-Doppler centroid control in GEO SAR, performing the attitude steering by a combination of pitch and roll rotation, is put forward.
This approach, considering the Earth’s rotation and elliptical orbit effects, can accurately reduce the residual Doppler centroid.
All the simulation results verify the correctness of the range of look angle and the proposed steering method.
American Psychological Association (APA)
Jiang, Yicheng& Hu, Bin& Zhang, Yun& Lian, Meng& Wang, Zhuoqun. 2014. Study on Zero-Doppler Centroid Control for GEO SAR Ground Observation. International Journal of Antennas and Propagation،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1036114
Modern Language Association (MLA)
Jiang, Yicheng…[et al.]. Study on Zero-Doppler Centroid Control for GEO SAR Ground Observation. International Journal of Antennas and Propagation No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1036114
American Medical Association (AMA)
Jiang, Yicheng& Hu, Bin& Zhang, Yun& Lian, Meng& Wang, Zhuoqun. Study on Zero-Doppler Centroid Control for GEO SAR Ground Observation. International Journal of Antennas and Propagation. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1036114
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1036114