A novel method for high-speed maneuvering target detection and motion parameters estimation
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A novel method for high-speed maneuvering target detection and motion parameters estimation Mingming Tian1 · Guisheng Liao1 · Shengqi Zhu1 · Xiongpeng He1 · Yunpeng Li2 Received: 15 October 2019 / Revised: 27 March 2020 / Accepted: 30 March 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract This paper considers the problems of high-speed maneuvering target detection and motion parameters estimation with complex motions, involving range migration (RM) and Doppler frequency migration (DFM) induced by target’s radial velocity, acceleration and jerk within the coherent integration interval. To address these problems, we propose a novel method based on the third-order keystone transform (TOKT) and first-order discrete polynomial-phase transform (FDPT) in this paper. Firstly, the TOKT is carried out to correct the third-order RM. Secondly, the matched filtering function is constructed to remove the quadratic DFM caused by radial jerk. After that, the FDPT is applied to reduce the target phase order. Then, the TOKT is employed again to eliminate the residual first-order RM related to target’s radial acceleration, and a well-focused peak is acquired after azimuth fast Fourier transform (FFT) as well as range inverse FFT. Finally, based on the position of peak, the motion parameters of maneuvering targets can be estimated efficiently. Compared with the existing algorithms, the proposed method achieves a good balance between the computational complexity and detection ability. Numerical results verify the effectiveness of the proposed method. Keywords Maneuvering target detection · Motion parameters estimation · Third-order keystone transform · Third-order range migration · Discrete polynomial-phase transform
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Mingming Tian [email protected] Guisheng Liao [email protected] Shengqi Zhu [email protected] Xiongpeng He [email protected] Yunpeng Li [email protected]
1
National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, Shaanxi, China
2
Key Laboratory of Intelligent Perception and Image Understanding of Ministry of Education, Xidian University, Xi’an 710071, China
123
Multidimensional Systems and Signal Processing
1 Introduction With the development of aerospace technology, high-speed maneuvering targets bring challenges to detection ability of radar. High-speed maneuvering targets detection has attracted much more attention for modern radar due to the increasing demands in practical applications, such as motion parameters estimation, target tracking and identification and high-resolution imaging (Xing et al. 2011; Tian et al. 2014; Bar-Shalom et al. 2001; Zhang et al. 2015; Sun et al. 2013; Chen and 2010). Li and Jilkov (2002), gave a comprehensive introduction of techniques for tracking maneuvering targets containing the maneuvering decision methods, which has a high reference value. Nevertheless, as for high-speed weak maneuvering target detection before tracking, tradition accumulation methods may have poor performance. Long-time coherent inte
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