基于Hankel矩阵改进的TLS-ESPRIT多频带融合处理  

TLS-ESPRIT Multiband Fusion Processing Based on Hankel Matrix Improvement

作　　者：张硕 杨君 葛鹏程 冯婷婷 杜钰 ZHANG Shuo;YANG Jun;GE Pengcheng;FENG Tingting;DU Yu(Space Engineering University,Beijing 101000 China)

机构地区：[1]航天工程大学,北京101000

出　　处：《电光与控制》2022年第9期90-95,共6页Electronics Optics & Control

摘　　要：针对传统矩阵束算法在低信噪比条件下,估计全极点模型参数时存在计算数值不稳定、极点估计精度不高的缺点,提出先对回波信号引入Hankel矩阵以去信号相干性,然后利用改进的TLS-ESPRIT算法估计多频带信号极点,再利用基于Hankel矩阵改进的TLS-ESPRIT替代传统的矩阵束求全频带全极点模型参数,以提高融合信号的精度。最终的仿真及实测数据结果显示,所提算法提高了多频带信号在低信噪比下的融合性能。In view of the shortcomings of traditional matrix pencil algorithm in estimating the parameters of all-pole model under the condition of low signal-to-noise ratio,the calculated values are unstable and the accuracy of pole estimation is not high.Firstly,Hankel matrix is introduced into the echo signal for signal decoherence,then the improved TLS-ESPRIT algorithm is used to estimate the poles of multi-band signals,and the improved TLS-ESPRIT based on Hankel matrix replaces the traditional matrix pencil to calculate the parameters of full-band all-pole model,so as to improve the accuracy of the fused signal.The final simulation and measured data show that the proposed method improves the fusion performance of multi-band signals at low SNR.

关 键 词：多频带信号 全极点模型 改进的TLS-ESPRIT 非相干量估计 HANKEL矩阵 

分 类 号：TN957.52[电子电信—信号与信息处理]