A Non-Uniform Interrupted-Sampling Repeater Jamming Method for Intra-Pulse Frequency Agile Radar

The existing research proposes an intra-pulse frequency agile radar waveform with “active” anti-jamming characteristics. It uses the discontinuity and periodicity of the interrupted-sampling repeater jamming and combines the anti-jamming algorithm to effectively suppress interrupted-sampling repeate...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2023-04, Vol.15 (7), p.1851
Main Authors: Sun, Zongzheng, Quan, Yinghui, Liu, Zhixing
Format: Article
Language:English
Subjects:
Algorithms
Analysis
Compression
Domains
electronic counter-measures
Fourier transforms
Frequency distribution
Interference
intra-pulse frequency agile
Jamming
Methods
non-uniform interrupted-sampling repeater jamming
Parameter estimation
parameters of jamming
Periodicity
Pulse compression
Pulse duration
Radar
Radar systems
Sampling
Theoretical analysis
Time-frequency analysis
time–frequency ridge
Waveforms
wavelet transform
Wavelet transforms
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Summary:The existing research proposes an intra-pulse frequency agile radar waveform with “active” anti-jamming characteristics. It uses the discontinuity and periodicity of the interrupted-sampling repeater jamming and combines the anti-jamming algorithm to effectively suppress interrupted-sampling repeater jamming. In order to improve the jamming effectiveness of the interferer for the intra-pulse frequency agile waveform, this paper proposes to jam the intra-pulse frequency agile radar by using a non-uniform interrupted-sampling and forwarding method under parameter constraints. The proposed method first obtains the sub-pulse width of the intra-pulse frequency agile radar waveform by parameter estimation of the intercepted intra-pulse frequency agile radar signal through time–frequency ridge extraction and wavelet transform. Then, we construct non-uniform interrupted-sampling repeater jamming based on sub-pulse width constraint interference parameters. Theoretical analysis and results show that the non-uniform interrupted-sampling forwarding under parameter constraints makes it challenging to suppress interference in multiple domains, such as the time–frequency and pulse compression domain for intra-pulse frequency agile radar, which significantly improves the jamming capability of the jammer for intra-pulse frequency agile radar.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs15071851