volume | PIER Journals

Abstract

In radar target detection, long-term coherent integration (LTCI) is widely employed to improve the signal-to-noise ratio (SNR) and enhance the detection capability for weak and small targets. Meanwhile, the airborne radar, with advantages of wide-area surveillance, high sensitivity, and strong maneuver ability, demonstrates significant superiority in detecting high-speed targets. However, during the flight of the airborne radar platform, motion errors and the relative motion of high-speed targets can cause significant range migration (RM) and Doppler frequency migration (DFM), degrading coherent integration performance. To this end, this paper proposes a coherent integration method for high-speed target in airborne radar based on the symmetric autocorrelation function, scaled Fourier transform, and sequence reversing autocorrelation function (SAF-SFT-SRAF). Detailed comparisons between SAF-SFT-SRAF and several typical methods demonstrate that the proposed method effectively balances computational complexity and detection performance.

1. Jin, Ke, Gongquan Li, Tao Lai, Tian Jin, and Yongjun Zhao, "A novel long-time coherent integration algorithm for Doppler-ambiguous radar maneuvering target detection," IEEE Sensors Journal, Vol. 20, No. 16, 9394-9407, Aug. 2020. Google Scholar

2. Lin, Lanjin, Guohao Sun, Ziyang Cheng, and Zishu He, "Long-time coherent integration for maneuvering target detection based on ITRT-MRFT," IEEE Sensors Journal, Vol. 20, No. 7, 3718-3731, Apr. 2020.
doi:The server didn't respond in time. Google Scholar

3. Wang, Haibo, Wenhua Huang, Haichuan Zhang, Tao Ba, and Zhiqiang Yang, "Modified adaptive RFT with sample covariance matrix inversion recursive estimation," Progress In Electromagnetics Research C, Vol. 145, 181-187, 2024. Google Scholar

4. Kirkland, David M., "An alternative range migration correction algorithm for focusing moving targets," Progress In Electromagnetics Research, Vol. 131, 227-241, 2012. Google Scholar

5. Huang, Penghui, Guisheng Liao, Zhiwei Yang, Xiang-Gen Xia, Jing-Tao Ma, and Jingting Ma, "Long-time coherent integration for weak maneuvering target detection and high-order motion parameter estimation based on keystone transform," IEEE Transactions on Signal Processing, Vol. 64, No. 15, 4013-4026, Aug. 2016. Google Scholar

6. Li, Suqi, Yihan Wang, Bailu Wang, Giorgio Battistelli, Luigi Chisci, and Guolong Cui, "Efficient dual-scale generalized Radon-Fourier transform detector family for long time coherent integration," IEEE Transactions on Signal Processing, Vol. 72, 4237-4252, 2024. Google Scholar

7. Pu, W., J. Wu, Y.-L. Huang, X.-D. Wang, J.-Y. Yang, W.-C. Li, and H.-G. Yang, "Nonsystematic range cell migration analysis and autofocus correction for bistatic forward-looking SAR," IEEE Transactions on Geoscience and Remote Sensing, Vol. 56, No. 11, 6556-6570, Nov. 2018. Google Scholar

8. Chen, Jianlai, Mengdao Xing, Hanwen Yu, Buge Liang, Jian Peng, and Guang-Cai Sun, "Motion compensation/autofocus in airborne synthetic aperture radar: A review," IEEE Geoscience and Remote Sensing Magazine, Vol. 10, No. 1, 185-206, Mar. 2022. Google Scholar

9. Zhang, Shun-Sheng, Tao Zeng, Teng Long, and Hai-Peng Yuan, "Dim target detection based on keystone transform," IEEE International Radar Conference, 889-894, Arlington, VA, USA, 2005.

10. Zheng, Jibin, Tao Su, Wentao Zhu, Xuehui He, and Qing Huo Liu, "Radar high-speed target detection based on the scaled inverse Fourier transform," IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol. 8, No. 3, 1108-1119, Mar. 2015. Google Scholar

11. Li, Xiaolong, Zhi Sun, Wei Yi, Guolong Cui, Lingjiang Kong, and Xiaobo Yang, "Computationally efficient coherent detection and parameter estimation algorithm for maneuvering target," Signal Processing, Vol. 155, 130-142, 2019. Google Scholar

12. Huang, Penghui, Guisheng Liao, Zhiwei Yang, Xiang-Gen Xia, Jing-Tao Ma, and Xuepan Zhang, "A fast SAR imaging method for ground moving target using a second-order WVD transform," IEEE Transactions on Geoscience and Remote Sensing, Vol. 54, No. 4, 1940-1956, Apr. 2016. Google Scholar

13. Lv, Xiaolei, Guoan Bi, Chunru Wan, and Mengdao Xing, "Lv's distribution: Principle, implementation, properties, and performance," IEEE Transactions on Signal Processing, Vol. 59, No. 8, 3576-3591, Aug. 2011. Google Scholar

14. Li, Dong, Muyang Zhan, Jia Su, Hongqing Liu, Xuepan Zhang, and Guisheng Liao, "Performances analysis of coherently integrated CPF for LFM signal under low SNR and its application to ground moving target imaging," IEEE Transactions on Geoscience and Remote Sensing, Vol. 55, No. 11, 6402-6419, Nov. 2017. Google Scholar

15. Zheng, Jibin, Hongwei Liu, Jun Liu, Xiaolin Du, and Qing Huo Liu, "Radar high-speed maneuvering target detection based on three-dimensional scaled transform," IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol. 11, No. 8, 2821-2833, Aug. 2018. Google Scholar

16. Zhao, Langxu, Haihong Tao, and Weijia Chen, "Maneuvering target detection based on three-dimensional coherent integration," IEEE Access, Vol. 8, 188321-188334, 2020. Google Scholar

17. Xu, Jia, Xiang-Gen Xia, Shi-Bao Peng, Ji Yu, Ying-Ning Peng, and Li-Chang Qian, "Radar maneuvering target motion estimation based on generalized Radon-Fourier transform," IEEE Transactions on Signal Processing, Vol. 60, No. 12, 6190-6201, Dec. 2012. Google Scholar

18. Yang, Mingdong, Daiyin Zhu, and Wei Song, "Comparison of two-step and one-step motion compensation algorithms for airborne synthetic aperture radar," Electronics Letters, Vol. 51, No. 14, 1108-1110, 2015. Google Scholar

19. Ribalta, Angel, "One-step motion compensation algorithm for squinted SAR," 2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 1154-1157, Beijing, China, 2016.

20. Li, Jincheng, Jie Chen, Pengbo Wang, and Otmar Loffeld, "A coarse-to-fine autofocus approach for very high-resolution airborne stripmap SAR imagery," IEEE Transactions on Geoscience and Remote Sensing, Vol. 56, No. 7, 3814-3829, Jul. 2018. Google Scholar

21. Pu, Wei, Junjie Wu, Yulin Huang, Jianyu Yang, and Haiguang Yang, "Fast factorized backprojection imaging algorithm integrated with motion trajectory estimation for bistatic forward-looking SAR," IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol. 12, No. 10, 3949-3965, Oct. 2019. Google Scholar

22. Wu, J., Research on high-speed moving target integration detection method of airborne radar, M.S. thesis, Univ. Electron. Sci. Technol. China, Chengdu, China, 2022.

23. Yang, Fan, Xiaolong Li, Mingxing Wang, Zhi Sun, and Guolong Cui, "IGRFT-based signal coherent integration method for high-speed target with airborne bistatic radar," 2022 16th IEEE International Conference on Signal Processing (ICSP), Vol. 1, 529-534, Beijing, China, 2022.

24. Pu, Wei, Junjie Wu, Yulin Huang, Ke Du, Wenchao Li, Jianyu Yang, and Haiguang Yang, "A rise-dimensional modeling and estimation method for flight trajectory error in bistatic forward-looking SAR," IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol. 10, No. 11, 5001-5015, Nov. 2017. Google Scholar

25. Wang, Yong, Zhaofa Wang, Bin Zhao, and Liang Xu, "Compensation for high-frequency vibration of platform in SAR imaging based on adaptive chirplet decomposition," IEEE Geoscience and Remote Sensing Letters, Vol. 13, No. 6, 792-795, Jun. 2016. Google Scholar

Dr. Wenwen Xu

Dr. Yuhang Wang

Dr. Jidan Huang

Professor Hao Wang

Dr. Jianyin Cao