A back-projection fast autofocus algorithm based on minimum entropy for SAR imaging

Min Liu; Chunsheng Li; Xinhua Shi

A back-projection fast autofocus algorithm based on minimum entropy for SAR imaging

Min Liu^*
, Chunsheng Li
, Xinhua Shi

^*Corresponding author for this work

School of Electronic and Information Engineering

Beihang University
Beijing Institute of Tracking and Telecommunication

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

9 Scopus citations

Abstract

This paper introduces an autofocus method for synthetic aperture radar (SAR) imaging. The algorithm is based on minimum entropy of the time domain back-projection (BP) technique. By dealing with the range compressed signal, we can get the azimuth focus result. For an ideal point target, through chooses the larger absolute value of the complex number pixels use BP algorithm to calculate the entropy for the complex image; on the other hand, for area target, we process a small part of the image which is the area we finally wanted. Computer simulation results for one point target and area target to prove the efficiency of this algorithm.

Original language	English
Title of host publication	2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011
Pages	451-454
Number of pages	4
State	Published - 2011
Event	2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011 - Seoul, Korea, Republic of Duration: 26 Sep 2011 → 30 Sep 2011

Publication series

Name	2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011

Conference

Conference	2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011
Country/Territory	Korea, Republic of
City	Seoul
Period	26/09/11 → 30/09/11

Keywords

Autofocus
Back-Projection algorithm
Minimum Entropy

Cite this

@inproceedings{5dae52bf637b4472b1c552a6b2e256be,

title = "A back-projection fast autofocus algorithm based on minimum entropy for SAR imaging",

abstract = "This paper introduces an autofocus method for synthetic aperture radar (SAR) imaging. The algorithm is based on minimum entropy of the time domain back-projection (BP) technique. By dealing with the range compressed signal, we can get the azimuth focus result. For an ideal point target, through chooses the larger absolute value of the complex number pixels use BP algorithm to calculate the entropy for the complex image; on the other hand, for area target, we process a small part of the image which is the area we finally wanted. Computer simulation results for one point target and area target to prove the efficiency of this algorithm.",

keywords = "Autofocus, Back-Projection algorithm, Minimum Entropy",

author = "Min Liu and Chunsheng Li and Xinhua Shi",

year = "2011",

language = "英语",

isbn = "9788993246179",

series = "2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011",

pages = "451--454",

booktitle = "2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011",

note = "2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011 ; Conference date: 26-09-2011 Through 30-09-2011",

}

Liu, M, Li, C & Shi, X 2011, A back-projection fast autofocus algorithm based on minimum entropy for SAR imaging. in 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011., 6087149, 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011, pp. 451-454, 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011, Seoul, Korea, Republic of, 26/09/11.

A back-projection fast autofocus algorithm based on minimum entropy for SAR imaging. / Liu, Min; Li, Chunsheng; Shi, Xinhua.
2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011. 2011. p. 451-454 6087149 (2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011).

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

TY - GEN

T1 - A back-projection fast autofocus algorithm based on minimum entropy for SAR imaging

AU - Liu, Min

AU - Li, Chunsheng

AU - Shi, Xinhua

PY - 2011

Y1 - 2011

N2 - This paper introduces an autofocus method for synthetic aperture radar (SAR) imaging. The algorithm is based on minimum entropy of the time domain back-projection (BP) technique. By dealing with the range compressed signal, we can get the azimuth focus result. For an ideal point target, through chooses the larger absolute value of the complex number pixels use BP algorithm to calculate the entropy for the complex image; on the other hand, for area target, we process a small part of the image which is the area we finally wanted. Computer simulation results for one point target and area target to prove the efficiency of this algorithm.

AB - This paper introduces an autofocus method for synthetic aperture radar (SAR) imaging. The algorithm is based on minimum entropy of the time domain back-projection (BP) technique. By dealing with the range compressed signal, we can get the azimuth focus result. For an ideal point target, through chooses the larger absolute value of the complex number pixels use BP algorithm to calculate the entropy for the complex image; on the other hand, for area target, we process a small part of the image which is the area we finally wanted. Computer simulation results for one point target and area target to prove the efficiency of this algorithm.

KW - Autofocus

KW - Back-Projection algorithm

KW - Minimum Entropy

UR - https://www.scopus.com/pages/publications/83755225637

M3 - 会议稿件

AN - SCOPUS:83755225637

SN - 9788993246179

T3 - 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011

SP - 451

EP - 454

BT - 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011

T2 - 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011

Y2 - 26 September 2011 through 30 September 2011

ER -

A back-projection fast autofocus algorithm based on minimum entropy for SAR imaging

Abstract

Publication series

Conference

Keywords

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