An Efficient Coherent Integration Method for Non-Uniform Pulse Repetition Interval Radar

Ge Gao, Shan Tao*, Xia Bai, Yuan Feng

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Long-time coherent integration is an effective method to enhance the signal-to-noise ratio (SNR) of radar echoes. However, non-uniform Pulse Repetition Interval (PRI) radar faces the challenge of Doppler spectrum distortion besides the range migration during long-time coherent integration. This paper proposes a new algorithm to correct non-uniform spectrum and range migration in a single processing step. The proposed method, implemented using a DFT-based approach, achieves a good balance between compensation performance and computational load compared with existing methods, such as correcting spectral distortion using NUDFT followed by range migration correction using KT, or implementing non-uniform KT via sinc interpolation principle. The simulation results demonstrate that the proposed method achieves an improvement in integration gain of 4.9 dB and 2.2 dB compared to the above two methods when the target velocity is near the boundary. The real-measured data analysis further indicate that the proposed method reduces the runtime by 37% compared to the NUDFT method under the condition of comparable integration gain. And the proposed method achieves an improvement in integration gain of 1.7 dB compared to the sinc interpolation method under the condition of comparable runtime. The results validate the effectiveness of the proposed method.

源语言英语
主期刊名2025 7th International Conference on Information Science, Electrical and Automation Engineering, ISEAE 2025
出版商Institute of Electrical and Electronics Engineers Inc.
901-906
页数6
ISBN(电子版)9798331510381
DOI
出版状态已出版 - 2025
已对外发布
活动7th International Conference on Information Science, Electrical and Automation Engineering, ISEAE 2025 - Harbin, 中国
期限: 18 4月 202520 4月 2025

出版系列

姓名2025 7th International Conference on Information Science, Electrical and Automation Engineering, ISEAE 2025

会议

会议7th International Conference on Information Science, Electrical and Automation Engineering, ISEAE 2025
国家/地区中国
Harbin
时期18/04/2520/04/25

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