Novel aperiodic phased array with reduced number of active chains for space-borne SAR

Junqi Lu; Yongxin Guo

doi:10.1109/APSAR.2015.7306144

Novel aperiodic phased array with reduced number of active chains for space-borne SAR

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

1 Citation (Scopus)

Abstract

A novel aperiodic phased array for space-borne synthetic aperture Radar (SAR) is presented which has fewer active chains than a corresponding periodic phased array while maintains comparable radiation performance. The design of proposed aperiodic phased array is based on equal amplitude sparse array. Compare to other aperiodic sparse phased array antennas for space-borne SAR which have been reported before, in the design of proposed sparse array a novel 'active-passive array' technology is utilized to modify the equivalent aperture current distribution, therefore the radiation performance can be improved significantly in terms of gain and sidelobe level. Simulation results show that the proposed phased array possess similar radiation performance to a periodic array while reduces the active chains number to 75%. Simplified evaluation of SAR Ambiguity-to-Signal Ratio also show that the proposed array exhibits similar performance of traditional periodic array, which is obviously better than that of conventional aperiodic sparse array. The design principle of 'active-passive array' as well as associated array synthesis method are also discussed. © 2015 IEEE.

Original language	English
Title of host publication	Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015
Publisher	IEEE
Pages	20-23
ISBN (Print)	9781467372961
DOIs	https://doi.org/10.1109/APSAR.2015.7306144
Publication status	Published - 23 Oct 2015
Externally published	Yes
Event	5th IEEE Asia-Pacific Conference on Synthetic Aperture Radar (APSAR 2015) - Singapore, Singapore Duration: 1 Sept 2015 → 4 Sept 2015 Conference number: 5

Publication series

Name	Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015

Conference

Conference	5th IEEE Asia-Pacific Conference on Synthetic Aperture Radar (APSAR 2015)
Abbreviated title	APSAR
Place	Singapore
City	Singapore
Period	1/09/15 → 4/09/15

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

high efficiency
phased array
space-borne SAR
sparse array

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10.1109/APSAR.2015.7306144

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Lu, J., & Guo, Y. (2015). Novel aperiodic phased array with reduced number of active chains for space-borne SAR. In Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015 (pp. 20-23). Article 7306144 (Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015). IEEE. https://doi.org/10.1109/APSAR.2015.7306144

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title = "Novel aperiodic phased array with reduced number of active chains for space-borne SAR",

abstract = "A novel aperiodic phased array for space-borne synthetic aperture Radar (SAR) is presented which has fewer active chains than a corresponding periodic phased array while maintains comparable radiation performance. The design of proposed aperiodic phased array is based on equal amplitude sparse array. Compare to other aperiodic sparse phased array antennas for space-borne SAR which have been reported before, in the design of proposed sparse array a novel 'active-passive array' technology is utilized to modify the equivalent aperture current distribution, therefore the radiation performance can be improved significantly in terms of gain and sidelobe level. Simulation results show that the proposed phased array possess similar radiation performance to a periodic array while reduces the active chains number to 75%. Simplified evaluation of SAR Ambiguity-to-Signal Ratio also show that the proposed array exhibits similar performance of traditional periodic array, which is obviously better than that of conventional aperiodic sparse array. The design principle of 'active-passive array' as well as associated array synthesis method are also discussed. {\textcopyright} 2015 IEEE.",

keywords = "high efficiency, phased array, space-borne SAR, sparse array",

author = "Junqi Lu and Yongxin Guo",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].; 5th IEEE Asia-Pacific Conference on Synthetic Aperture Radar (APSAR 2015), APSAR ; Conference date: 01-09-2015 Through 04-09-2015",

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doi = "10.1109/APSAR.2015.7306144",

language = "English",

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series = "Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015",

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Lu, J & Guo, Y 2015, Novel aperiodic phased array with reduced number of active chains for space-borne SAR. in Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015., 7306144, Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015, IEEE, pp. 20-23, 5th IEEE Asia-Pacific Conference on Synthetic Aperture Radar (APSAR 2015), Singapore, Singapore, 1/09/15. https://doi.org/10.1109/APSAR.2015.7306144

Novel aperiodic phased array with reduced number of active chains for space-borne SAR. / Lu, Junqi; Guo, Yongxin.
Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015. IEEE, 2015. p. 20-23 7306144 (Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Novel aperiodic phased array with reduced number of active chains for space-borne SAR

AU - Lu, Junqi

AU - Guo, Yongxin

N1 - Conference code: 5

PY - 2015/10/23

Y1 - 2015/10/23

N2 - A novel aperiodic phased array for space-borne synthetic aperture Radar (SAR) is presented which has fewer active chains than a corresponding periodic phased array while maintains comparable radiation performance. The design of proposed aperiodic phased array is based on equal amplitude sparse array. Compare to other aperiodic sparse phased array antennas for space-borne SAR which have been reported before, in the design of proposed sparse array a novel 'active-passive array' technology is utilized to modify the equivalent aperture current distribution, therefore the radiation performance can be improved significantly in terms of gain and sidelobe level. Simulation results show that the proposed phased array possess similar radiation performance to a periodic array while reduces the active chains number to 75%. Simplified evaluation of SAR Ambiguity-to-Signal Ratio also show that the proposed array exhibits similar performance of traditional periodic array, which is obviously better than that of conventional aperiodic sparse array. The design principle of 'active-passive array' as well as associated array synthesis method are also discussed. © 2015 IEEE.

AB - A novel aperiodic phased array for space-borne synthetic aperture Radar (SAR) is presented which has fewer active chains than a corresponding periodic phased array while maintains comparable radiation performance. The design of proposed aperiodic phased array is based on equal amplitude sparse array. Compare to other aperiodic sparse phased array antennas for space-borne SAR which have been reported before, in the design of proposed sparse array a novel 'active-passive array' technology is utilized to modify the equivalent aperture current distribution, therefore the radiation performance can be improved significantly in terms of gain and sidelobe level. Simulation results show that the proposed phased array possess similar radiation performance to a periodic array while reduces the active chains number to 75%. Simplified evaluation of SAR Ambiguity-to-Signal Ratio also show that the proposed array exhibits similar performance of traditional periodic array, which is obviously better than that of conventional aperiodic sparse array. The design principle of 'active-passive array' as well as associated array synthesis method are also discussed. © 2015 IEEE.

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KW - phased array

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EP - 23

BT - Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015

PB - IEEE

T2 - 5th IEEE Asia-Pacific Conference on Synthetic Aperture Radar (APSAR 2015)

Y2 - 1 September 2015 through 4 September 2015

ER -

Novel aperiodic phased array with reduced number of active chains for space-borne SAR

Abstract

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Research Keywords

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