Ground-Based RFI Source Localization via Single-Channel SAR Using Pulse Range Difference of Arrival Article Swipe
Jiaxin Wan
,
Bing Han
,
Jianbing Xiang
,
Di Yin
,
Shangyu Zhang
,
Jiazhi He
,
Jiayuan Shen
,
Yugang Feng
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/rs17040588
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.3390/rs17040588
Radio Frequency Interference (RFI) significantly degrades the quality of spaceborne Synthetic Aperture Radar (SAR) images, and RFI source localization is a crucial component of SAR interference mitigation. Single-station, single-channel SAR, referred to as single-channel SAR, is the most common operational mode of spaceborne SAR. However, studies on RFI source localization for this system are limited, and the localization accuracy remains low. This paper presents a method for locating the ground-based RFI source using spaceborne single-channel SAR echo data. First, matched filtering is employed to estimate the range and azimuth times of the RFI pulse-by-pulse in the SAR echo domain. A non-convex localization model using Pulse Range Difference of Arrival (PRDOA) is established based on the SAR observation geometry. Then, by applying Weighted Least Squares and Semidefinite Relaxation, the localization model is transformed into a convex optimization problem, allowing for the solution of its global optimal solution to achieve RFI source localization. Furthermore, the error analysis on the PRDOA localization model is conducted and the Cramér–Rao Lower Bound is derived. Based on the simulation platform and the SAR level-0 raw data of Gaofen-3, we conduct several verification experiments, with the Pulse Time of Arrival localization selected for comparison. The results demonstrate that the proposed method achieves localization accuracy with a hundred-meter error in azimuth and a kilometer-level total error, with the total localization errors reduced to approximately 1/4 to 1/3 of those of the Pulse Time of Arrival method.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/rs17040588
- OA Status
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- References
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- OpenAlex ID
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Raw OpenAlex JSON
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https://openalex.org/W4407397276Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3390/rs17040588Digital Object Identifier
- Title
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Ground-Based RFI Source Localization via Single-Channel SAR Using Pulse Range Difference of ArrivalWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2025Year of publication
- Publication date
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2025-02-08Full publication date if available
- Authors
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Jiaxin Wan, Bing Han, Jianbing Xiang, Di Yin, Shangyu Zhang, Jiazhi He, Jiayuan Shen, Yugang FengList of authors in order
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https://doi.org/10.3390/rs17040588Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.3390/rs17040588Direct OA link when available
- Concepts
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Range (aeronautics), Remote sensing, Channel (broadcasting), Geology, Computer science, Telecommunications, Aerospace engineering, EngineeringTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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