基于旋转干涉仪的近场源参数估计算法

马菁涛; 陶海红; 谢坚; 杨杰

doi:10.12000/JR14146

基于旋转干涉仪的近场源参数估计算法

doi: 10.12000/JR14146

(西安电子科技大学雷达信号处理国家重点实验室西安 710071)

基金项目:

国家自然科学基金(60971108), 航空基金(2012***009)和西安电子科技大学基本科研业务费(BDY061428)资助课题

详细信息

作者简介:
马菁涛(1990-),女,2013年于西安电子科技大学获工学学士学位,现为西安电子科技大学雷达信号处理国家重点实验室硕士研究生,主要研究方向为阵列信号处理.E-mail:jtma@stu.xidian.edu.cn陶海红(1976-),女,西安电子科技大学教授,博士生导师,主要研究领域为雷达信号处理与检测、高速实时信号处理、阵列信号处理.E-mail:hhtao@xidian.edu.cn谢坚(1986-),男,西安电子科技大学雷达信号处理国家重点实验室博士研究生,主要研究方向为雷达信号处理、阵列信号处理.E-mail:xiejian1986@gmail.com杨杰(1989-),男,西安电子科技大学雷达信号处理国家重点实验室博士研究生,主要研究方向为MIMO雷达信号处理.E-mail:yangjie_xidian@126.com

通讯作者:
马菁涛jtma@stu.xidian.edu.cn

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- 被引次数: 0
出版历程
- 收稿日期: 2014-12-01
- 修回日期: 2015-03-23
- 网络出版日期: 2015-06-28

Rotating Interferometer-based Algorithm for Parameter Estimation of Near-field Source

(National Laboratory of Radar Signal Processing Xidian University, Xi'an, 710071, China)

摘要

摘要: 该文基于旋转干涉仪提出了一种新的近场源参数估计算法.该算法利用单个长基线干涉仪的旋转和相位积分实现相位解模糊,有效解决了单基线干涉仪在近场源情况中存在的无模糊视角范围和测角精度之间的矛盾.该算法只需两个接收天线即可得到近场源俯仰角、方位角和距离参数的闭式解,无需构造高阶累积量矩阵和多维搜索,同时也降低了多基线组合对通道一致性的要求.相比于传统的双长基线干涉仪方法,该文算法具有更高的参数估计精度和解模糊能力,具有结构简单、易于工程实现的优点.计算机仿真实验表明了所提算法的有效性和正确性.
- 近场源 /
- 旋转干涉仪 /
- 2维角估计 /
- 距离估计 /
- 相位解模糊
Abstract: This paper proposes a novel rotating interferometer-based algorithm for parameter estimation of nearfield source. The algorithm exploits the rotation of a single long baseline interferometer and the integration operation of the phase to unwrap the phase ambiguity. Thus the contradiction between the maximal unambiguous angle and the direction finding accuracy in the single baseline interferometer can be efficiently eliminated in the near-field source scenario. The algorithm can obtain the closed form solutions of the elevation and azimuth angles as well as range estimations for near-field source with two receiving sensors. It avoids the construction of high-order cumulant matrices and multi-dimension search. Simultaneously, it alleviates the requirment for multi-baseline channel consistency. Compared with the conventional double long baselines interferometer method, the proposed algorithm achieves higher parameter estimation accuracy and better performance in ambiguity resolution. Moreover, the proposed algorithm enjoys a simple structure, which is easy to be implemented in engineering application. Simulation results demonstrate the effectiveness and validity of the proposed algorithm.
- Near-field source /
- Rotating interferometer /
- Two-dimensional angle estimation /
- Range estimation /
- Unwrap phase ambiguity

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参考文献(14)

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