Photonic dual-band radar receiving processing technology based on a SLFM signal

Yang Wu; Tao Zhou; Aiping Xie; Wenlin Bai; Jiaxin Xu; Xin Zhong; Zhiyu Chen; Bowen Zhang

doi:10.1117/12.3048161

13 December 2024 Photonic dual-band radar receiving processing technology based on a SLFM signal

Yang Wu, Tao Zhou, Aiping Xie, Wenlin Bai, Jiaxin Xu, Xin Zhong, Zhiyu Chen, Bowen Zhang

Author Affiliations +

Proceedings Volume 13502, AOPC 2024: AI in Optics and Photonics; 1350210 (2024) https://doi.org/10.1117/12.3048161
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China

Abstract

In this paper, a photonic dual-band radar receiving and processing technique based on a Stepped Linear Frequency Modulation (SLFM) signal has been proposed, achieving high-resolution radar detection driven by a low-rate signal source. The generation of dual-band radar signal with GHz-level bandwidth from SLFM sub-pulse signals with MHz-level bandwidth is utilized, significantly conserving the bandwidth resources of the radar driving signal source. Subsequently, a photonics-assisted dual-channel radar de-chirper cascaded with two electro-optic modulators is employed to realize wideband radar pulse compression processing covering both the X-band and Ku-band. Finally, the coherent fusion processing algorithm for dual-band radar is utilized, not only accomplishing an equivalent high-resolution radar ranging and Inverse Synthetic Aperture Radar (ISAR) imaging but also facilitating an anti-jamming radar detection. In simulation experiments, this paper has achieved the reception of dual-band SLFM radar signals with a sub-pulse number of 100 and a frequency coverage range of 8GHz-16GHz. Due to the coherent fusion processing algorithm, the radar target ranging and ISAR imaging with a resolution of ~2cm (equivalent bandwidth of 8GHz) successfully have been achieved.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yang Wu, Tao Zhou, Aiping Xie, Wenlin Bai, Jiaxin Xu, Xin Zhong, Zhiyu Chen, and Bowen Zhang "Photonic dual-band radar receiving processing technology based on a SLFM signal", Proc. SPIE 13502, AOPC 2024: AI in Optics and Photonics, 1350210 (13 December 2024); https://doi.org/10.1117/12.3048161

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KEYWORDS

Radar signal processing

Signal processing

Radar

Radar sensor technology

Ranging

Imaging systems

Pulse signals

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