Range Unambiguous Wide Swath Imaging with Frequency Diverse Array Scansar

Range ambiguity is a serious problem existing in the wide swath SAR imaging due to the impact of high pulse repetition frequency. To address this problem, this paper proposes a new imaging configuration via using the frequency diverse array (FDA) antenna. By designing the frequency increment along a...

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Bibliographic Details
Published in2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS pp. 4755 - 4758
Main Authors Liao, Yi, Wu, Chunlin, Zeng, Guanghui, Zheng, Zhi
Format Conference Proceeding
LanguageEnglish
Published IEEE 11.07.2021
Subjects
Antenna arrays
Focusing
frequency diverse array
Frequency diversity
Geoscience and remote sensing
Radar polarimetry
Radio spectrum management
range ambiguity
ScanSAR
Simulation
wide swath
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Summary:Range ambiguity is a serious problem existing in the wide swath SAR imaging due to the impact of high pulse repetition frequency. To address this problem, this paper proposes a new imaging configuration via using the frequency diverse array (FDA) antenna. By designing the frequency increment along array elements and adopting the sub-array technique, FDA can easily allocate its beam to the corresponding unambiguous block, which outperforms the conventional methods. The FDA generated range-dependent phase shift can be used to extract the signal from different range block, accomplishing range unambiguous focusing. Simulation results are provided to demonstrate the effectiveness of the proposed approach.
ISSN:2153-7003
DOI:10.1109/IGARSS47720.2021.9554327