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Improved Estimation Method for Multi-target Acceleration and Velocity in LFMCW Radar


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Improved Estimation Method for Multi-target Acceleration and Velocity in LFMCW Radar
WU LiPENG Shu-shengXIAO Ze-longHU Tai-yangXU Jian-zhong
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China
linear frequency modulated continuous wave acceleration and velocity estimation reassigned time-frequency smoothed pseudo Winger-Ville distribution radar signal processing
TN957. 51
Aiming at the problems of low accuracy and high computation complexity when estimating multi-target movement parameters, an improved method combining time-frequency reassigned smoothed pseudo Wigner-Ville distribution and Radon( RSPWVD-Radon) transform is presented. This method adopts the constant false alarm rate detection and thresholds processing to estimate multi-target acceleration and velocity parameters in LFMCW radar, and can overcome the shortcomings of heavy computation burden and error accumulation effect in the existed algorithms. The realization steps of estimation algorithm are provided. The simulation results show that the method has higher parameter estimation accuracy even when the signal-to-noise ratio( SNR) is lower.


[1] 张雄飞,柳少军. 格斗中武器系统的最优机动策略 研究[J]. 南京理工大学学报,2006,30 ( 5 ) : 649 -652.
[2] Stankovic L,Thayaparan T,Dakovic M. Signal decomposition by using the S-method with application to the analysis of HF radar signals in sea-clutter[J]. IEEE Transactions on Signal Processing, 2006, 54( 11) : 4332 -4342.
[3] Li X R, Jilkov V P. Survey of maneuvering target tracking. Part II: Motion models of ballistic and space targets [J]. IEEE Transactions on Aerospace and Electronic Systems, 2010, 46( 1) : 96-119.
[4] 吴礼,彭树生,肖泽龙,等. 对称三角线性调频连续 波雷达信号多周期模糊函数分析[J]. 南京理工大 学学报, 2009, 33( 1) : 74-78.
[5] 张容权,杨建宇,熊金涛. 基于多项相位变换的线性 FMCW 雷达目标加速度和速度估计方法[J]. 电子 学报, 2005, 33( 3) : 452-455.
[6] 刘建成,王雪松,肖顺平,等. 基于Wigner-Hough 变 换的径向加速度估计[J]. 电子学报, 2005, 33( 12) : 2235-2238.
[7] 张容权,李政,杨建宇,等. LFMCW 雷达多目标加速 度和速度估计方法[J]. 电讯技术, 2005( 6) : 17-20.
[8] 雷志勇,黄银河. 高频雷达机动目标的时频图像处 理方法研究[J]. 中国电子科学研究院学报, 2009,4 ( 2) : 197-201.
[9] Cohen L. Time-frequency distributions———a review [J]. Proceedings of the IEEE, 1989, 77( 7) : 941-981.
[10] Auger F,Flandrin P. Improving the readability of timefrequency and time-scale representations by the reassignment method[J]. IEEE Transactions on Signal Processing, 1995, 43( 5) : 1068-1089.
[11] 张贤达,保铮. 非平稳信号分析与处理[M]. 北京: 国防工业出版社, 1998.
[12] Jennison B K. Detection of polyphase pulse compression waveforms using the Radon-ambiguity transform[J]. IEEE Transactions on Aerospace and Electronic Systems, 2003, 39( 1) : 335-343.
[13] Wang Y, Jiang C. ISAR imaging of maneuvering target based on the L-class of fourth-order complex-lag PWVD[J]. IEEE Transactions on Geoscience and Remote Sensing, 2010, 48( 3) : 1518-1527. 651


Last Update: 2012-10-24