High-Squinted Spaceborne SAR Data Focusing in the Sliding-Spotlight Mode

Yanfang Liu; Zhirong Men; Wei Yang; Hongcheng Zeng; Jie Chen; Chunsheng Li; Yun Wang; Chao Yang

High-Squinted Spaceborne SAR Data Focusing in the Sliding-Spotlight Mode

Yanfang Liu
, Zhirong Men
, Wei Yang
, Hongcheng Zeng
, Jie Chen
, Chunsheng Li
, Yun Wang
, Chao Yang

School of Electronic and Information Engineering

Beihang University
China Aerospace Science and Technology Corporation
Shanghai Institute of Satellite Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

In this letter, a novel imaging algorithm is proposed for focusing high-squinted spaceborne Synthetic aperture radar (SAR) data in the sliding-spotlight mode. First, the linear range walk correction (LRWC) and range frequency-dependent derotation are adopted to solve the azimuth spectrum aliasing. Then, a modified range migration algorithm (RMA) is derived for precise focusing considering the nonuniformity of azimuth sampling intervals. Finally, the deramp operation combined with the improved nonlinear chirp scaling (INCS) is employed for solving the aliasing problem of azimuth time and extending the depth-of azimuth-focus (DOAF). Simulated data are processed to validate the effectiveness of the proposed method.

Original language	English
Title of host publication	EUSAR 2024 - 15th European Conference on Synthetic Aperture Radar
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	164-169
Number of pages	6
ISBN (Electronic)	9783800762873
State	Published - 2024
Event	15th European Conference on Synthetic Aperture Radar, EUSAR 2024 - Munich, Germany Duration: 23 Apr 2024 → 26 Apr 2024

Publication series

Name	Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
ISSN (Print)	2197-4403

Conference

Conference	15th European Conference on Synthetic Aperture Radar, EUSAR 2024
Country/Territory	Germany
City	Munich
Period	23/04/24 → 26/04/24

Cite this

Liu, Y., Men, Z., Yang, W., Zeng, H., Chen, J., Li, C., Wang, Y., & Yang, C. (2024). High-Squinted Spaceborne SAR Data Focusing in the Sliding-Spotlight Mode. In EUSAR 2024 - 15th European Conference on Synthetic Aperture Radar (pp. 164-169). (Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR). Institute of Electrical and Electronics Engineers Inc..

@inproceedings{ab926484718348bca3f540a055db8e2a,

title = "High-Squinted Spaceborne SAR Data Focusing in the Sliding-Spotlight Mode",

abstract = "In this letter, a novel imaging algorithm is proposed for focusing high-squinted spaceborne Synthetic aperture radar (SAR) data in the sliding-spotlight mode. First, the linear range walk correction (LRWC) and range frequency-dependent derotation are adopted to solve the azimuth spectrum aliasing. Then, a modified range migration algorithm (RMA) is derived for precise focusing considering the nonuniformity of azimuth sampling intervals. Finally, the deramp operation combined with the improved nonlinear chirp scaling (INCS) is employed for solving the aliasing problem of azimuth time and extending the depth-of azimuth-focus (DOAF). Simulated data are processed to validate the effectiveness of the proposed method.",

author = "Yanfang Liu and Zhirong Men and Wei Yang and Hongcheng Zeng and Jie Chen and Chunsheng Li and Yun Wang and Chao Yang",

note = "Publisher Copyright: {\textcopyright} VDE VERLAG GMBH ∙ Berlin ∙ Offenbach.; 15th European Conference on Synthetic Aperture Radar, EUSAR 2024 ; Conference date: 23-04-2024 Through 26-04-2024",

year = "2024",

language = "英语",

series = "Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "164--169",

booktitle = "EUSAR 2024 - 15th European Conference on Synthetic Aperture Radar",

address = "美国",

}

Liu, Y, Men, Z , Yang, W , Zeng, H , Chen, J, Li, C, Wang, Y & Yang, C 2024, High-Squinted Spaceborne SAR Data Focusing in the Sliding-Spotlight Mode. in EUSAR 2024 - 15th European Conference on Synthetic Aperture Radar. Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR, Institute of Electrical and Electronics Engineers Inc., pp. 164-169, 15th European Conference on Synthetic Aperture Radar, EUSAR 2024, Munich, Germany, 23/04/24.

High-Squinted Spaceborne SAR Data Focusing in the Sliding-Spotlight Mode. / Liu, Yanfang; Men, Zhirong ; Yang, Wei et al.
EUSAR 2024 - 15th European Conference on Synthetic Aperture Radar. Institute of Electrical and Electronics Engineers Inc., 2024. p. 164-169 (Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - High-Squinted Spaceborne SAR Data Focusing in the Sliding-Spotlight Mode

AU - Liu, Yanfang

AU - Men, Zhirong

AU - Yang, Wei

AU - Zeng, Hongcheng

AU - Chen, Jie

AU - Li, Chunsheng

AU - Wang, Yun

AU - Yang, Chao

PY - 2024

Y1 - 2024

N2 - In this letter, a novel imaging algorithm is proposed for focusing high-squinted spaceborne Synthetic aperture radar (SAR) data in the sliding-spotlight mode. First, the linear range walk correction (LRWC) and range frequency-dependent derotation are adopted to solve the azimuth spectrum aliasing. Then, a modified range migration algorithm (RMA) is derived for precise focusing considering the nonuniformity of azimuth sampling intervals. Finally, the deramp operation combined with the improved nonlinear chirp scaling (INCS) is employed for solving the aliasing problem of azimuth time and extending the depth-of azimuth-focus (DOAF). Simulated data are processed to validate the effectiveness of the proposed method.

AB - In this letter, a novel imaging algorithm is proposed for focusing high-squinted spaceborne Synthetic aperture radar (SAR) data in the sliding-spotlight mode. First, the linear range walk correction (LRWC) and range frequency-dependent derotation are adopted to solve the azimuth spectrum aliasing. Then, a modified range migration algorithm (RMA) is derived for precise focusing considering the nonuniformity of azimuth sampling intervals. Finally, the deramp operation combined with the improved nonlinear chirp scaling (INCS) is employed for solving the aliasing problem of azimuth time and extending the depth-of azimuth-focus (DOAF). Simulated data are processed to validate the effectiveness of the proposed method.

UR - https://www.scopus.com/pages/publications/85193978806

M3 - 会议稿件

AN - SCOPUS:85193978806

T3 - Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR

SP - 164

EP - 169

BT - EUSAR 2024 - 15th European Conference on Synthetic Aperture Radar

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 15th European Conference on Synthetic Aperture Radar, EUSAR 2024

Y2 - 23 April 2024 through 26 April 2024

ER -

High-Squinted Spaceborne SAR Data Focusing in the Sliding-Spotlight Mode

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