An Effective Minimum Entropy Deconvolution and Zero-Phase Filter Algorithm for Blanket Jamming Suppression on Carrier-Free Ultra-Wideband SAR

Chen, Si; Yang, Huanhuan; Yuan, Yue; Zhang, Shuning

doi:10.1109/jsen.2023.3334917

IEEE Sensors J.

2024

DOI: 10.1109/jsen.2023.3334917

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An Effective Minimum Entropy Deconvolution and Zero-Phase Filter Algorithm for Blanket Jamming Suppression on Carrier-Free Ultra-Wideband SAR

Si Chen,

Huanhuan Yang,

Yue Yuan

et al.

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Cited by 1 publication

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Anti-Maneuvering Repeater Jamming Using Up- and Down-Chirp Modulation in Spaceborne Synthetic Aperture Radar

Sha,

Feng,

Wei

et al. 2024

Remote Sensing

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With the continuous development of synthetic aperture radar (SAR) jamming technology, low-power maneuvering repeater jammers are now flexible and can be located on multiple unmanned aerial vehicles (UAVs) and unmanned vehicles (UVs) at the same time, which greatly increases the difficulty of the anti-maneuvering repeater jamming method for spaceborne SAR. Due to the low-power transmission, the locations of the low-power repeater jammers and the protected areas in the imaged swath are relatively close in distance, while the transmission delay of the jamming is approximately equal to the pulse repetition interval (PRI). According to this phenomenon, an anti-maneuvering repeater jamming method using up- and down-chirp modulation is proposed in this paper. After alternately transmitting up- and down-chirp modulation signals, echoes of the jamming and the protected area are recorded in the same location within the echo-receiving window and are related to different chirp modulations. To remove the jamming echoes, de-chirping and frequency filtering are adopted after echo data segmentation. With jamming interference removal using frequency notch filtering, parts of the spectra corresponding to the desired echoes of the imaged swath are simultaneously removed. To recover the unwanted removed range spectra, linear prediction is introduced to improve the focusing quality. Finally, simulation results on both point and distributed targets validate the proposed anti-maneuvering repeater jamming method by using up- and down-chirp modulation.

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Anti-Maneuvering Repeater Jamming Using Up- and Down-Chirp Modulation in Spaceborne Synthetic Aperture Radar

Sha,

Feng,

Wei

et al. 2024

Remote Sensing

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An Effective Minimum Entropy Deconvolution and Zero-Phase Filter Algorithm for Blanket Jamming Suppression on Carrier-Free Ultra-Wideband SAR

Cited by 1 publication

References 38 publications

Anti-Maneuvering Repeater Jamming Using Up- and Down-Chirp Modulation in Spaceborne Synthetic Aperture Radar

Anti-Maneuvering Repeater Jamming Using Up- and Down-Chirp Modulation in Spaceborne Synthetic Aperture Radar

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