RESEARCH ON SOLUTION IMPROVING ALONG-TRACK RESOLUTION FOR MULTI-RECEIVER SYNTHETIC APERTURE SONAR USING LFM PULSES IN THE VIET NAM’S SEA ZONE
129 viewsKeywords:
Synthetic aperture sonar; Multi-receiver; Along-track resolution; Back projection; Sound velocity error.Abstract
This paper proposes a solution to improve the along-track resolution for multi-receiver synthetic aperture sonar (SAS) using linear frequency modulated (LFM) pulses considering the variation of acoustic velocity vector during transmission and the Doppler frequency. Based on the more complete consideration of physical processes than the conventional solution, the proposed solution can improve the along-track resolution for SAS with and without the sound velocity error. The simulation results demonstrate the effectiveness with data measured in the sea zone of Vietnam.
References
[1]. N. Kolev, “Sonar Systems,” InTech, Croatia (2011), pp.3-25.
[2]. M. P. Hayes, and P. T. Gough, “Synthetic Aperture Sonar: A Review of Current Status,” IEEE J. Oceanic Engineering, Vol. 34, No. 3 (2009), pp. 207-224.
[3]. J. Dillon and R. Charron, “Resolution Measurement for Synthetic Aperture Sonar,” OCEANS 2019 MTS/IEEE SEATTLE, Seattle, USA, 2019, pp. 1-6.
[4]. Xia Ji, Lisheng Zhou, and Weihua Cong, “Effect of incorrect sound velocity on synthetic aperture sonar resolution,” proc. MATEC Web of Conf.283, 04013 (2019).
[5]. R. E. Hansen, T. O. Sæbø, H. J. Callow, and P. E. Hagen, “The SENSOTEK Synthetic Aperture Sonar - results from HUGIN AUV trials,” Norwegian Defence Research Establishment (2007), pp. 11-12.
[6]. N. Đ. Tĩnh, T. Đ. Khánh, N. T. Hưng, and N. V. Trà, “Một giải pháp cải thiện tỷ số tín hiệu/tạp cho sonar mặt mở tổng hợp nhiều máy thu,” Tạp chí Nghiên cứu KH&CN quân sự, Số 71, 02 - 2021, tr. 49-56.
[7]. X. Zhang, W. Ying, and X. Dai, “High-resolution imaging for the multireceiver SAS,” The Journal of Engineering, 19 (2019), pp. 6057-6062.
[8]. X. Zhang, P. Yang, C. Tan, and W. Ying, “BP algorithm for the multireceiver SAS,” IET Radar Sonar Navig., Vol. 13, Iss. 5 (2019), pp. 830-838.
[9]. N. D. Tinh, and T. D. Khanh, “A New Imaging Geometry Model for Determining Phase Distribution in Multi-receiver Synthetic Aperture Sonar,” Proc. 6th NAFOSTED Conference on Information and Computer Science, Hanoi, Vietnam (2019), pp. 518-521.
[10]. N. Đ. Tĩnh, T. Đ. Khánh, “Nghiên cứu giải pháp cải thiện chất lượng ảnh cho sonar mặt mở tổng hợp nhiều máy thu,” Tạp chí Khoa học và Kỹ thuật, Số 214, 05-2021, tr. 17-28.
[11]. D. W. Hawkins and P. T. Gough, “Temporal Doppler effects in SAS,” Proc. Inst. Acoust., vol. 26, no. 5 (2004), pp. 1–10.
[12]. Cumming, I., Wong, F., “Digital Processing of Synthetic Aperture Radar Data: Algorithms and Implementation,” Artech House (2005), Chapter 2.
