Phase Inconsistency Error Compensation for Multichannel Spaceborne SAR Based on the Rotation-Invariant Property

Heli Gao; Jie Chen; Wei Liu; Chunsheng Li; Wei Yang

doi:10.1109/LGRS.2020.2972402

Phase Inconsistency Error Compensation for Multichannel Spaceborne SAR Based on the Rotation-Invariant Property

Heli Gao, Jie Chen, Wei Liu, Chunsheng Li, Wei Yang

Research output: Journal article publication › Journal article › Academic research › peer-review

6 Citations (Scopus)

Abstract

The azimuth multichannel technique has been widely used in synthetic aperture radar (SAR) systems for improving the resolution and expanding the illumination area. However, due to phase inconsistency (PI) of different channels, the image quality deteriorates significantly, including resolution loss and appearance of ghost targets. In this letter, by exploiting the rotation-invariant property of the steering vector of the multichannel SAR signal, a PI error compensation method is proposed based on the estimation of signal parameters by rotation invariance technique (ESPRIT). Experimental results are presented using both simulated and real data to demonstrate the performance of the proposed method.

Original language	English
Article number	9057465
Pages (from-to)	301-305
Number of pages	5
Journal	IEEE Geoscience and Remote Sensing Letters
Volume	18
Issue number	2
DOIs	https://doi.org/10.1109/LGRS.2020.2972402
Publication status	Published - Apr 2021

Keywords

Estimation of signal parameters by rotation invariance technique (ESPRIT)
multichannel
phase inconsistency (PI)
synthetic aperture radar (SAR)

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Electrical and Electronic Engineering

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10.1109/LGRS.2020.2972402

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title = "Phase Inconsistency Error Compensation for Multichannel Spaceborne SAR Based on the Rotation-Invariant Property",

abstract = "The azimuth multichannel technique has been widely used in synthetic aperture radar (SAR) systems for improving the resolution and expanding the illumination area. However, due to phase inconsistency (PI) of different channels, the image quality deteriorates significantly, including resolution loss and appearance of ghost targets. In this letter, by exploiting the rotation-invariant property of the steering vector of the multichannel SAR signal, a PI error compensation method is proposed based on the estimation of signal parameters by rotation invariance technique (ESPRIT). Experimental results are presented using both simulated and real data to demonstrate the performance of the proposed method.",

keywords = "Estimation of signal parameters by rotation invariance technique (ESPRIT), multichannel, phase inconsistency (PI), synthetic aperture radar (SAR)",

author = "Heli Gao and Jie Chen and Wei Liu and Chunsheng Li and Wei Yang",

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T1 - Phase Inconsistency Error Compensation for Multichannel Spaceborne SAR Based on the Rotation-Invariant Property

AU - Gao, Heli

AU - Chen, Jie

AU - Liu, Wei

AU - Li, Chunsheng

AU - Yang, Wei

PY - 2021/4

Y1 - 2021/4

N2 - The azimuth multichannel technique has been widely used in synthetic aperture radar (SAR) systems for improving the resolution and expanding the illumination area. However, due to phase inconsistency (PI) of different channels, the image quality deteriorates significantly, including resolution loss and appearance of ghost targets. In this letter, by exploiting the rotation-invariant property of the steering vector of the multichannel SAR signal, a PI error compensation method is proposed based on the estimation of signal parameters by rotation invariance technique (ESPRIT). Experimental results are presented using both simulated and real data to demonstrate the performance of the proposed method.

AB - The azimuth multichannel technique has been widely used in synthetic aperture radar (SAR) systems for improving the resolution and expanding the illumination area. However, due to phase inconsistency (PI) of different channels, the image quality deteriorates significantly, including resolution loss and appearance of ghost targets. In this letter, by exploiting the rotation-invariant property of the steering vector of the multichannel SAR signal, a PI error compensation method is proposed based on the estimation of signal parameters by rotation invariance technique (ESPRIT). Experimental results are presented using both simulated and real data to demonstrate the performance of the proposed method.

KW - Estimation of signal parameters by rotation invariance technique (ESPRIT)

KW - multichannel

KW - phase inconsistency (PI)

KW - synthetic aperture radar (SAR)

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M3 - Journal article

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SN - 1545-598X

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SP - 301

EP - 305

JO - IEEE Geoscience and Remote Sensing Letters

JF - IEEE Geoscience and Remote Sensing Letters

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ER -

Phase Inconsistency Error Compensation for Multichannel Spaceborne SAR Based on the Rotation-Invariant Property

Abstract

Keywords

ASJC Scopus subject areas

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