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.
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)
出处
《电光与控制》
CSCD
北大核心
2022年第9期90-95,共6页
Electronics Optics & Control
