Journal of Systems Engineering and Electronics ›› 2024, Vol. 35 ›› Issue (5): 1084-1097.doi: 10.23919/JSEE.2023.000144

• ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

A frequency domain estimation and compensation method for system synchronization parameters of distributed-HFSWR

Hongyong WANG1(), Ying SUO1,2(), Weibo DENG1,2(), Xiaochuan WU1,2(), Yang BAI1(), Xin ZHANG1,2,*()   

  1. 1 School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China
    2 Key Laboratory of Marine Environmental Monitoring and Information Processing, Ministry of Industry and Information Technology, Harbin 150001, China
  • Received:2022-09-06 Accepted:2023-10-12 Online:2024-10-18 Published:2024-11-06
  • Contact: Xin ZHANG E-mail:wanghongyong618@163.com;suoyingsing@126.com;dengweibo@hit.edu.cn;wxc@hit.edu.cn;hit_baiyang@163.com;zhangxinhit@hit.edu.cn
  • About author:
    WANG Hongyong was born in 1990. He received his B.S. degree in communication engineering from Shandong Normal University, Ji’nan, China, in 2015, and M.S. degree in information and communication engineering from Harbin Institute of Technology, Harbin, China, in 2018. He is pursuing his Ph.D. degree in information and communication engineering from Harbin Institute of Technology. His research interests include array signal processing, distributed radar, and direction of arrival (DOA) estimation. E-mail: wanghongyong618@163.com

    SUO Ying was born in 1982. She received her B.S. degree in communication engineering, M.S. degree in electromagnetic fields and microwave technology, and Ph.D. degree in information and communication engineering from Harbin Institute of Technology, in 2005, 2007, and 2011, respectively. She is an associate professor with the School of Electronics and Information Engineering, Harbin Institute of Technology. Her research interests include radar array antenna design and radar array signal processing. E-mail: suoyingsing@126.com

    DENG Weibo was born in 1961. He received his B.S. degree in radio technology from Tsinghua University, Beijing, China, in 1984, and M.S. and Ph.D. degrees in information and communication engineering from Harbin Institute of Technology, Harbin, China, in 1992 and 2002, respectively. He is a professor with the School of Electronics and Information Engineering, Harbin Institute of Technology. His research interests include radar signal processing, clutter suppression, radar target scattering characteristics, antenna design, and compressed sensing. E-mail: dengweibo@hit.edu.cn

    WU Xiaochuan was born in 1986. He received his B.S. degree in electronic and information engineering from Harbin University of Science and Technology, Harbin, China, in 2008, and M.S. and Ph.D. degrees in information and communication engineering from Harbin Institute of Technology, Harbin, China, in 2010 and 2015, respectively. He is an associate professor with the School of Electronics and Information Engineering, Harbin Institute of Technology. His research interests include compressive sensing, array signal processing, and target recognition. E-mail: wxc@hit.edu.cn

    BAI Yang was born in 1994. He received his B.S. degree in information and communication engineering from Harbin Institute of Technology, Weihai, China, in 2017. He is pursuing his Ph.D. degree in information and communication engineering from Harbin Institute of Technology. His research interests include array signal processing, distributed radar target positioning, and radar signal processing. E-mail: hit_baiyang@163.com

    ZHANG Xin was born in 1986. He received his B.S., M.S., and Ph.D. degrees in information and communication engineering from Harbin Institute of Technology, Harbin, China, in 2009, 2011, and 2015, respectively. He is an associate professor with the School of Electronics and Information Engineering, Harbin Institute of Technology. His research interests include radar signal processing, clutter suppression, space-time adaptive processing, and compressed sensing. E-mail: zhangxinhit@hit.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (61701140).

Abstract:

To analyze the influence of time synchronization error, phase synchronization error, frequency synchronization error, internal delay of the transceiver system, and range error and angle error between the unit radars on the target detection performance, firstly, a spatial detection model of distributed high-frequency surface wave radar (distributed-HFSWR) is established in this paper. In this model, a method for accurate extraction of direct wave spectrum based on curve fitting is proposed to obtain accurate system internal delay and frequency synchronization error under complex electromagnetic environment background and low signal to noise ratio (SNR), and to compensate for the shift of range and Doppler frequency caused by time-frequency synchronization error. The direct wave component is extracted from the spectrum, the range estimation error and Doppler estimation error are reduced by the method of curve fitting, and the fitting accuracy of the parameters is improved. Then, the influence of frequency synchronization error on target range and radial Doppler velocity is quantitatively analyzed. The relationship between frequency synchronization error and radial Doppler velocity shift and range shift is given. Finally, the system synchronization parameters of the trial distributed-HFSWR are obtained by the proposed spectrum extraction method based on curve fitting, the experimental data is compensated to correct the shift of the target, and finally the correct target parameter information is obtained. Simulations and experimental results demonstrate the superiority and correctness of the proposed method, theoretical derivation and detection model proposed in this paper.

Key words: distributed high-frequency surface wave radar (distributed-HFSWR), direct wave, synchronization error, curve fitting, system synchronization parameter compensation