Parameter estimation for radar non-uniform moving target based on time-frequency analysis

Abstract

Abstract: For the parameter estimation of ground non-uniform moving targets of synthetic aperture radar (SAR), an adaptive notch filter (ANF) method based on Lv′s distribution (LVD) is proposed. Firstly, the mathematical model of radar echo is established according to the movement of ground non-uniform vehicle target, and the theoretical formulae of Doppler parameters and motion parameters of the echo signal are analyzed and deduced. Secondly, the pseudo Wigner-Ville distribution (PWVD) algorithm is used to extract the higher-order phase caused by higher-order motion in the echo signal, and the polynomial fitting method is applied to compensate. The motion compensated moving target signal is then aperture segmented along the azimuth direction, and each data block of sub aperture is time-frequency represented based on LVD algorithm, to estimate the variation curve of Doppler modulation frequency value. By utilizing the ANF, the high-frequency components caused by the radial acceleration of the moving target and the low-frequency components caused by the heading velocity in the modulation frequency signal are accurately separated. Finally, inversion calculation of the extracted high-frequency and low-frequency components of the modulation frequency rate are performed to obtain the estimated radial acceleration and heading velocity of non-uniform moving targets. Comparative experiments are conducted between the method proposed in this paper and the low-pass filter method based on LVD to verify that the proposed method can achieve higher accuracy in motion parameter estimation

Key words: font-size:15.04px, ">radar, pseudo Wigner-Ville distribution (PWVD), Lv′s distribution (LVD), adaptive notch filter (ANF), motion parameter estimation

CLC Number:

YANG Lei, LEI Mengyao. Parameter estimation for radar non-uniform moving target based on time-frequency analysis[J]. Journal of Civil Aviation University of China, 2023, 41(4): 29-36.

References 12

[1]	巫胜洪．合成孔径雷达的发展与干扰技术[J]．华东船舶工业学院学报(自然科学版), 2003, 17(4): 56-59．
[2]	孙华东, 宿富林, 高建军, 等．基于 DPCA-FrFT 算法的 SAR 运动目标参数估计[J]．吉林大学学报(工学版), 2008, 38(2): 476-482．
[3]	VILLE J. Theorie et applications de la notion de signal analytique [J].Cables et Transmissions, 1948, 20A: 61-74.
[4]	CLAASEN T, MECKLENBRAUKER W． Time-frequency signal analy－ sis by means of the Wigner distribution[C]//IEEE International Confer－ ence on Acoustics, Speech, and Signal Processing, March 30-April 1, 1981, Atlanta, GA, USA． IEEE, 2003: 69-72．
[5]	HUANG P H, LIAO G S, YANG Z W, et al． Ground moving target imag－ ing and motion parameter estimation using radon-second-order WVD transform[C]//2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar(APSAR), September 1-4, 2015, Singapore． IEEE, 2015: 768-772．
[6]	GUAN J, CHEN X L, HUANG Y, et al． Adaptive fractional Fourier transform-based detection algorithm for moving target in heavy sea clutter [J]． IET Radar Sonar & Navigation, 2012, 6(5): 389．
[7]	BARBAROSSA S． Analysis of multicomponent LFM signals by a combined Wigner-Hough transform[J]． IEEE Transactions on Signal Processing, 1995, 43(6): 1511-1515．
[8]	LI X L, SUN Z, YI W, et al． Radar detection and parameter estimation of high-speed target based on MART-LVT[J]． IEEE Sensors Journal, 2019, 19(4): 1478-1486．
[9]	XIA X G, CHEN V C． A quantitative SNR analysis for the pseudo Wigner-Ville distribution [J]． IEEE Transactions on Signal Processing, 1999, 47(10): 2891-2894．
[10]	BOASHASH B． Estimating and interpreting the instantaneous frequen－ cy of a signal．I．Fundamentals[J]． Proceedings of the IEEE, 1992, 80(4): 520-538．
[11]	BARBAROSSA S, ZANALDA A. A combined Wigner-Ville and Hough transform for cross-terms suppression and optimal detection and param－ eter estimation[C]//1992 IEEE International Conference on Acoustics, Speech, and Signal Processing, March 23-26, 1992, San Francisco, CA, USA. IEEE, 2022: 173-176.
[12]	LV X L, BI G A, WAN C R, et al． Lv′s distribution: principle, imple－ mentation, properties, and performance[J]． IEEE Transactions on Signal Processing, 2011, 59(8): 3576-3591． [13] MOJIRI M, BAKHSHAI A R． An adaptive notch filter for frequency es－ timation of a periodic signal[J]． IEEE Transactions on Automatic Con－ trol, 2004, 49(2): 314-318．

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