Performance analysis of two-step algorithm in sliding spotlight space-borne SAR

Feifeng Liu; Zegang Ding; Tao Zeng; Teng Long

doi:10.1109/RADAR.2010.5494479

Performance analysis of two-step algorithm in sliding spotlight space-borne SAR

Feifeng Liu^*, Zegang Ding, Tao Zeng, Teng Long

^*Corresponding author for this work

School of Information and Electronics

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

11 Citations (Scopus)

Abstract

The focusing performances of two-step algorithm are analyzed in the paper. The convolution processing in two-step algorithm is detailed analyzed. It can be found that the operation can reduce the Doppler bandwidth effectively and overcome the alias of azimuth echo by making the residual Doppler bandwidth smaller than PRF. The formula of residual Doppler bandwidth is derived here. According to the formula, range large bandwidth signal has influence on the residual Doppler bandwidth, which is not considered in the traditional imaging algorithm. In the high resolution sliding spotlight space-borne SAR system, the residual Doppler bandwidth is affected largely by the wide range bandwidth. PRF should be larger than the residual Doppler bandwidth in two-step algorithm; else it will result in defocus of the SAR image. The computer simulation is given to verify the presented analysis.

Original language	English
Title of host publication	2010 IEEE Radar Conference
Subtitle of host publication	Global Innovation in Radar, RADAR 2010 - Proceedings
Pages	965-968
Number of pages	4
DOIs	https://doi.org/10.1109/RADAR.2010.5494479
Publication status	Published - 2010
Event	IEEE International Radar Conference 2010, RADAR 2010 - Washington DC, United States Duration: 10 May 2010 → 14 May 2010

Publication series

Name	IEEE National Radar Conference - Proceedings
ISSN (Print)	1097-5659

Conference

Conference	IEEE International Radar Conference 2010, RADAR 2010
Country/Territory	United States
City	Washington DC
Period	10/05/10 → 14/05/10

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10.1109/RADAR.2010.5494479

Cite this

@inproceedings{6f5491e5c7df492c8dc7ecdeb65b427d,

title = "Performance analysis of two-step algorithm in sliding spotlight space-borne SAR",

abstract = "The focusing performances of two-step algorithm are analyzed in the paper. The convolution processing in two-step algorithm is detailed analyzed. It can be found that the operation can reduce the Doppler bandwidth effectively and overcome the alias of azimuth echo by making the residual Doppler bandwidth smaller than PRF. The formula of residual Doppler bandwidth is derived here. According to the formula, range large bandwidth signal has influence on the residual Doppler bandwidth, which is not considered in the traditional imaging algorithm. In the high resolution sliding spotlight space-borne SAR system, the residual Doppler bandwidth is affected largely by the wide range bandwidth. PRF should be larger than the residual Doppler bandwidth in two-step algorithm; else it will result in defocus of the SAR image. The computer simulation is given to verify the presented analysis.",

author = "Feifeng Liu and Zegang Ding and Tao Zeng and Teng Long",

year = "2010",

doi = "10.1109/RADAR.2010.5494479",

language = "English",

isbn = "9781424458127",

series = "IEEE National Radar Conference - Proceedings",

pages = "965--968",

booktitle = "2010 IEEE Radar Conference",

note = "IEEE International Radar Conference 2010, RADAR 2010 ; Conference date: 10-05-2010 Through 14-05-2010",

}

Liu, F , Ding, Z , Zeng, T & Long, T 2010, Performance analysis of two-step algorithm in sliding spotlight space-borne SAR. in 2010 IEEE Radar Conference: Global Innovation in Radar, RADAR 2010 - Proceedings., 5494479, IEEE National Radar Conference - Proceedings, pp. 965-968, IEEE International Radar Conference 2010, RADAR 2010, Washington DC, United States, 10/05/10. https://doi.org/10.1109/RADAR.2010.5494479

Performance analysis of two-step algorithm in sliding spotlight space-borne SAR. / Liu, Feifeng ; Ding, Zegang ; Zeng, Tao et al.
2010 IEEE Radar Conference: Global Innovation in Radar, RADAR 2010 - Proceedings. 2010. p. 965-968 5494479 (IEEE National Radar Conference - Proceedings).

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

TY - GEN

T1 - Performance analysis of two-step algorithm in sliding spotlight space-borne SAR

AU - Liu, Feifeng

AU - Ding, Zegang

AU - Zeng, Tao

AU - Long, Teng

PY - 2010

Y1 - 2010

N2 - The focusing performances of two-step algorithm are analyzed in the paper. The convolution processing in two-step algorithm is detailed analyzed. It can be found that the operation can reduce the Doppler bandwidth effectively and overcome the alias of azimuth echo by making the residual Doppler bandwidth smaller than PRF. The formula of residual Doppler bandwidth is derived here. According to the formula, range large bandwidth signal has influence on the residual Doppler bandwidth, which is not considered in the traditional imaging algorithm. In the high resolution sliding spotlight space-borne SAR system, the residual Doppler bandwidth is affected largely by the wide range bandwidth. PRF should be larger than the residual Doppler bandwidth in two-step algorithm; else it will result in defocus of the SAR image. The computer simulation is given to verify the presented analysis.

AB - The focusing performances of two-step algorithm are analyzed in the paper. The convolution processing in two-step algorithm is detailed analyzed. It can be found that the operation can reduce the Doppler bandwidth effectively and overcome the alias of azimuth echo by making the residual Doppler bandwidth smaller than PRF. The formula of residual Doppler bandwidth is derived here. According to the formula, range large bandwidth signal has influence on the residual Doppler bandwidth, which is not considered in the traditional imaging algorithm. In the high resolution sliding spotlight space-borne SAR system, the residual Doppler bandwidth is affected largely by the wide range bandwidth. PRF should be larger than the residual Doppler bandwidth in two-step algorithm; else it will result in defocus of the SAR image. The computer simulation is given to verify the presented analysis.

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M3 - Conference contribution

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SN - 9781424458127

T3 - IEEE National Radar Conference - Proceedings

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BT - 2010 IEEE Radar Conference

T2 - IEEE International Radar Conference 2010, RADAR 2010

Y2 - 10 May 2010 through 14 May 2010

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Performance analysis of two-step algorithm in sliding spotlight space-borne SAR

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