An improved wide swath imaging algorithm based on series reversion in GEO SAR

Zhipeng Liu; Teng Long; Cheng Hu; Tao Zeng

doi:10.1109/IGARSS.2012.6350963

An improved wide swath imaging algorithm based on series reversion in GEO SAR

Zhipeng Liu, Teng Long^*, Cheng Hu, Tao Zeng

^*Corresponding author for this work

School of Information and Electronics

Research output: Contribution to conference › Paper › peer-review

6 Citations (Scopus)

Abstract

In geosynchronous (GEO) synthetic aperture radar (SAR), the synthetic aperture time (SAT) is very long and the trajectory mode should be considered as curve. This paper mainly analyzes the impacts of target azimuth position displacement on GEO SAR image formation. Because GEO SAR imaging need be based on the curved trajectory, targets' azimuth position displacement on GEO SAR image formation can affect targets' defocusing. This point will be analyzed by comparing two-dimensional (2-D) spectrum in GEO SAR and low earth orbit (LEO) SAR and some simulations. In the imaging formulation, to focusing a large scene, we present an improved secondary range compression (SRC) algorithm. In this proposed SRC algorithm, the azimuth compression function can adapt itself by changing the azimuth displacement. Finally, a large scene's imaging under the long SAT is realized.

Original language	English
Pages	2078-2081
Number of pages	4
DOIs	https://doi.org/10.1109/IGARSS.2012.6350963
Publication status	Published - 2012
Event	2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012 - Munich, Germany Duration: 22 Jul 2012 → 27 Jul 2012

Conference

Conference	2012 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
Country/Territory	Germany
City	Munich
Period	22/07/12 → 27/07/12

Keywords

Curved Trajectory Model
GEO SAR
Secondary Range Compression (SRC) algorithm

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10.1109/IGARSS.2012.6350963

Cite this

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abstract = "In geosynchronous (GEO) synthetic aperture radar (SAR), the synthetic aperture time (SAT) is very long and the trajectory mode should be considered as curve. This paper mainly analyzes the impacts of target azimuth position displacement on GEO SAR image formation. Because GEO SAR imaging need be based on the curved trajectory, targets' azimuth position displacement on GEO SAR image formation can affect targets' defocusing. This point will be analyzed by comparing two-dimensional (2-D) spectrum in GEO SAR and low earth orbit (LEO) SAR and some simulations. In the imaging formulation, to focusing a large scene, we present an improved secondary range compression (SRC) algorithm. In this proposed SRC algorithm, the azimuth compression function can adapt itself by changing the azimuth displacement. Finally, a large scene's imaging under the long SAT is realized.",

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year = "2012",

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AU - Liu, Zhipeng

AU - Long, Teng

AU - Hu, Cheng

AU - Zeng, Tao

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AB - In geosynchronous (GEO) synthetic aperture radar (SAR), the synthetic aperture time (SAT) is very long and the trajectory mode should be considered as curve. This paper mainly analyzes the impacts of target azimuth position displacement on GEO SAR image formation. Because GEO SAR imaging need be based on the curved trajectory, targets' azimuth position displacement on GEO SAR image formation can affect targets' defocusing. This point will be analyzed by comparing two-dimensional (2-D) spectrum in GEO SAR and low earth orbit (LEO) SAR and some simulations. In the imaging formulation, to focusing a large scene, we present an improved secondary range compression (SRC) algorithm. In this proposed SRC algorithm, the azimuth compression function can adapt itself by changing the azimuth displacement. Finally, a large scene's imaging under the long SAT is realized.

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An improved wide swath imaging algorithm based on series reversion in GEO SAR

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Keywords

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