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A Highly Robust Detector for Single-Frequency Pulse Signal with Large Doppler

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Abstract

CW signal is widely used in sonar, communication, biomedicine and other fields. But because of its low Doppler tolerance, many detectors for CW signal are limited in large Doppler. To solve this problem, this paper proposes a new detector based on the consistency of sub-array instantaneous frequency sequence. The idea of the detector is as follows: First, use split beamforming technology to process the received signals of array. Next, extract the instantaneous frequency sequences of the output signals of the left and right sub-array, respectively. After that, calculate the variance of the difference sequence of two instantaneous frequency sequences as the detection statistics. Then, achieve the purpose of detecting CW signal. Simulation results and the verification of practical measured data show that this detector can effectively detect CW signals, and the detection performance under large Doppler is significantly better than matched filter and variance-of-instantaneous-frequency detector.

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All data included in this study are available upon request by contact with the corresponding author.

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Acknowledgements

This research was supported by the National Key Research and Development Program of China (No. 2016YFC1400101), the National Key Research and Development Program of China (No. 2017YFC0306900), Provincial Funding Projects of National Key R&D Program of China (No. GX18C019) and the National Defense Basic Scientific Research Project (No. JCKY2019604B001).

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Authors and Affiliations

  1. Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin, 150001, China

    Guolong Liang, Yuanxin Teng, Jin Fu & Jinjin Wang

  2. Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Ministry of Industry and Information Technology, Harbin, 150001, China

    Guolong Liang, Yuanxin Teng, Jin Fu & Jinjin Wang

  3. College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin, 150001, China

    Guolong Liang, Yuanxin Teng, Jin Fu & Jinjin Wang

  4. Qingdao Haina Underwater Information Technology Co., Ltd., Qingdao, 266500, China

    Guolong Liang, Jin Fu & Jinjin Wang

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  1. Guolong Liang
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  2. Yuanxin Teng
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  3. Jin Fu
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  4. Jinjin Wang
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Correspondence to Jin Fu.

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Liang, G., Teng, Y., Fu, J. et al. A Highly Robust Detector for Single-Frequency Pulse Signal with Large Doppler. Circuits Syst Signal Process 41, 6906–6930 (2022). https://doi.org/10.1007/s00034-022-02096-2

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