基于线性tripole阵列的相干信号角度和极化估计与跟踪  

Angle-Polarization Estimation & Tracking for Coherent Signals Using a Linear Tripole Array

作　　者：何劲 嵇玮玮 刘卫平 原浩娟 

机构地区：[1]上海航天电子技术研究所,上海210109

出　　处：《上海航天》2015年第1期17-21,共5页Aerospace Shanghai

摘　　要：提出了一种利用均匀线性tripole阵列的计算简单的相干信号二维角度和极化参数的估计和跟踪算法。算法采用子阵平均进行去相关,采用只需线性计算的类ESPRIT算法实现内嵌在tripole子阵中的角度和极化参数的自动配对估计。对运动目标,可用LMS算法自适应地估计和跟踪其角度和极化参数。该算法可通过扩展阵列孔径提高参数估计的精度。计算机仿真验证了算法的有效性。A new computationally simple 2Dangle-polarization estimation and tracking algorithm for multiple coherent signals using a uniformly linear tripole array was put forward in this paper.The source coherency was decorrelated by subarray averaging.The ESPRIT-like algorithm with only linear operator was adopted to estimate automatically-paired angles and polarizations embedded in the electric components of the tripoles.A LMS-based algorithm was applied to adaptively estimate and track moving and polarization varying signals.The new algorithm could offer high angle and polarization estimation accuracy by setting the tripoles to space much further apart than a half-wavelength.Monte-Carlo simulations verified the efficacy of the algorithm proposed.

关 键 词：阵列信号处理 角度估计 极化估计 多径 相干信号 

分 类 号：TN011[电子电信—物理电子学]