Interrupted-sampling repeater jamming(ISRJ) suppression based on cyclostationarity
Interrupted-sampling repeater jamming(ISRJ) suppression based on cyclostationarity
- Author(s): F. Li 1, 2 ; X. Han 1 ; Y. Li 1, 2 ; T. Long 1
- DOI: 10.1049/icp.2021.0722
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- Author(s): F. Li 1, 2 ; X. Han 1 ; Y. Li 1, 2 ; T. Long 1
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View affiliations
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Affiliations:
1:
Radar Research Laboratory , School of Information and Electronics, Beijing Institute of Technology , Beijing 100081 , China ;
2: Beijing Institute of Technology Chongqing Innovation , Center
Source:
IET International Radar Conference (IET IRC 2020),
2021
p.
793 – 797
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Affiliations:
1:
Radar Research Laboratory , School of Information and Electronics, Beijing Institute of Technology , Beijing 100081 , China ;
- Conference: IET International Radar Conference (IET IRC 2020)
- DOI: 10.1049/icp.2021.0722
- ISBN: 978-1-83953-540-6
- Location: Online Conference
- Conference date: 04-06 November 2020
- Format: PDF
Interrupted-sampling repeater jamming (ISRJ) is coherent with transmitted signal by intercepting partially and forwarding transmitted signal and poses a huge threat to radar because it is hard to suppress. This paper focuses on the ISRJ suppression by the difference in statistical domain. By deducing the mathematical expression of auto-correlation and cyclic frequency based on modeling echo signal, the difference in statistical domain between target echo signal with ISRJ is shown and used to construct Frequency-Shift (FRESH) filter. The FRESH filter is used to suppress the ISRJ-based false targets. What’s more, the results of FRESH filter is analyzed when the different parameters of ISRJ are choosed. The simulation results demonstrate the applicability of FRESH filter when it is used to suppress ISRJ.
Inspec keywords: jamming; echo; electronic countermeasures; correlation methods; interference suppression; radar signal processing
Subjects: Radar theory; Radar equipment, systems and applications; Filtering methods in signal processing; Electromagnetic compatibility and interference