Effects of antenna beam steering on TOPSAR imaging quality

Yue Wu; Chun Sheng Li; Peng Bo Wang; Jie Chen

doi:10.3873/j.issn.1000-1328.2012.04.011

Effects of antenna beam steering on TOPSAR imaging quality

Yue Wu^*
, Chun Sheng Li
, Peng Bo Wang
, Jie Chen

^*Corresponding author for this work

School of Electronic and Information Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The step-by-step steering of antenna beam for spaceborne TOPSAR (Terrain Observation by Progressive Scan SAR) mode has significant impacts on image quality. The modulation law of spaceborne TOPSAR mode beam steering for azimuth signal is analyzed, and a mathematical model of azimuth beam step-by-step steering is implemented. Besides, based on the theory of paired echoes, the formulas of the amplitude and position of azimuth paired echoes are derived. The relationship between beam stepped steering and both amplitude and position of paired echoes is quantitatively described. Finally, the computer simulation is used to verify the validity of theoretical analysis.

Original language	English
Pages (from-to)	487-491
Number of pages	5
Journal	Yuhang Xuebao/Journal of Astronautics
Volume	33
Issue number	4
DOIs	https://doi.org/10.3873/j.issn.1000-1328.2012.04.011
State	Published - Apr 2012

Keywords

Beam steering
Paired echoes
Synthetic aperture radar (SAR)
TOPSAR mode

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10.3873/j.issn.1000-1328.2012.04.011

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title = "Effects of antenna beam steering on TOPSAR imaging quality",

abstract = "The step-by-step steering of antenna beam for spaceborne TOPSAR (Terrain Observation by Progressive Scan SAR) mode has significant impacts on image quality. The modulation law of spaceborne TOPSAR mode beam steering for azimuth signal is analyzed, and a mathematical model of azimuth beam step-by-step steering is implemented. Besides, based on the theory of paired echoes, the formulas of the amplitude and position of azimuth paired echoes are derived. The relationship between beam stepped steering and both amplitude and position of paired echoes is quantitatively described. Finally, the computer simulation is used to verify the validity of theoretical analysis.",

keywords = "Beam steering, Paired echoes, Synthetic aperture radar (SAR), TOPSAR mode",

author = "Yue Wu and Li, \{Chun Sheng\} and Wang, \{Peng Bo\} and Jie Chen",

year = "2012",

month = apr,

doi = "10.3873/j.issn.1000-1328.2012.04.011",

language = "英语",

volume = "33",

pages = "487--491",

journal = "Yuhang Xuebao/Journal of Astronautics",

issn = "1000-1328",

publisher = "Chinese Society of Astronautics",

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TY - JOUR

T1 - Effects of antenna beam steering on TOPSAR imaging quality

AU - Wu, Yue

AU - Li, Chun Sheng

AU - Wang, Peng Bo

AU - Chen, Jie

PY - 2012/4

Y1 - 2012/4

N2 - The step-by-step steering of antenna beam for spaceborne TOPSAR (Terrain Observation by Progressive Scan SAR) mode has significant impacts on image quality. The modulation law of spaceborne TOPSAR mode beam steering for azimuth signal is analyzed, and a mathematical model of azimuth beam step-by-step steering is implemented. Besides, based on the theory of paired echoes, the formulas of the amplitude and position of azimuth paired echoes are derived. The relationship between beam stepped steering and both amplitude and position of paired echoes is quantitatively described. Finally, the computer simulation is used to verify the validity of theoretical analysis.

AB - The step-by-step steering of antenna beam for spaceborne TOPSAR (Terrain Observation by Progressive Scan SAR) mode has significant impacts on image quality. The modulation law of spaceborne TOPSAR mode beam steering for azimuth signal is analyzed, and a mathematical model of azimuth beam step-by-step steering is implemented. Besides, based on the theory of paired echoes, the formulas of the amplitude and position of azimuth paired echoes are derived. The relationship between beam stepped steering and both amplitude and position of paired echoes is quantitatively described. Finally, the computer simulation is used to verify the validity of theoretical analysis.

KW - Beam steering

KW - Paired echoes

KW - Synthetic aperture radar (SAR)

KW - TOPSAR mode

UR - https://www.scopus.com/pages/publications/84862312016

U2 - 10.3873/j.issn.1000-1328.2012.04.011

DO - 10.3873/j.issn.1000-1328.2012.04.011

M3 - 文章

AN - SCOPUS:84862312016

SN - 1000-1328

VL - 33

SP - 487

EP - 491

JO - Yuhang Xuebao/Journal of Astronautics

JF - Yuhang Xuebao/Journal of Astronautics

IS - 4

ER -

Effects of antenna beam steering on TOPSAR imaging quality

Abstract

Keywords

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