A Method for Estimating the Direction of Arrival of Coherent Signals on Arbitrary Antenna Array in Multi-path Scenarios

您当前的位置：

首页 >

文章列表页 >

A Method for Estimating the Direction of Arrival of Coherent Signals on Arbitrary Antenna Array in Multi-path Scenarios

更新时间：2025-05-08

- A Method for Estimating the Direction of Arrival of Coherent Signals on Arbitrary Antenna Array in Multi-path Scenarios
- Vol. 43, Issue 6, Pages: 72-75+98(2009)
- 作者机构：
  
  西安交通大学电子与信息工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.7
- Online First：10 June 2009，
  
  Published：2009
- 稿件说明：
移动端阅览
A Method for Estimating the Direction of Arrival of Coherent Signals on Arbitrary Antenna Array in Multi-path Scenarios[J]. 2009, 43(6): 72-75+98.
DOI：

A Method for Estimating the Direction of Arrival of Coherent Signals on Arbitrary Antenna Array in Multi-path Scenarios[J]. 2009, 43(6): 72-75+98. DOI：

摘要

针对多径环境中相干信号波达方向(DOA)估计问题

提出了一种适合任意阵列流型的相干信号波达方向估计算法(DOA-CSAA).先通过联合使用时域和空域相关函数估计出每个用户组的广义导向矢量

再估计出每个用户组内多条路径上的波达方向.由于DOA-CSAA 算法所利用的信号的空域相关信息和时域相关信息均为信号的二阶统计量

因而运算量远小于基于四阶统计量的算法.此外

DOA-CSAA 算法由于未使用子空间平滑算法

所以不受阵列流型限制

且阵列孔径没有降低

因此当使用M个阵元的任意阵列流型时

可估计出的DOA个数最多可达M(M-1)个.仿真实验表明

与经典子空间平滑算法相比

DOA-CSAA算法在均方根误差为10

-4

～10

-3

时可获得20 dB左右的信噪比增益.

Abstract

In order to estimate direction of arrival(DOA)of coherent signals in multi-path propagation

a new estimation algorithm DOA-CSAA is proposed. The generalized steering vector corresponding to each user is estimated by jointly adopting the time-domain and space-domain correlations. Then the direction-of-arrival of every multi-path is estimated within each user's group. The proposed method

which is capable of identifying more DOAs than the methods that are based on fourth-order statistics

uses second-order statistics only

hence its computational complexity is much lower. Since the forward/backward spatial smoothing technique is not adopted in the proposed method

arbitrary geometry arrays are applicable. The method can estimate at most M(M-1)impinging DOAs using an arbitrary geometry array

with M antennae. Simulation results and comparison with the forward/backward spatial smoothing techniques under the same simulation conditions show that the DOA-CSAA can obtain nearly 20 dB signal-to-noise ratio gain when the root mean square error of approximation is between10

-4

and 10

-3

关键词

Keywords

references

EVANS J E, JOHNSON J R, SUN D F. High resolution angular spectrum estimation techniques for terrain scattering analysis and angle of arrival estimation [C]∥Proc 1st ASSP Workshop Spectral Estimation. Piscataway, NJ, USA: IEEE Press,1981: 134-139.

PILLAI S U, KAILATH B H. Forward-backward spatial smoothing techniques for the coherent signal identification [J].IEEE Transaction on ASSP,1989,37(1):8-15.

GONEN E, MENDEL J M, DOGAN M C. Applications of cumulants to array processing,part IV: direction finding in coherent signals case [J]. IEEE Trans Signal Processing,1997,45(9):2265-2275.

汪仪林,殷勤业,金梁,等.利用信号的循环平稳特性进行相干源的波达方向估计 [J]. 电子学报,1999,29(9):86-89.

WANG Yilin, YIN Qinye, JIN Liang, et al. Estimation DOA of correlated signal via modified SC-SSF method [J].Acta Electronica Sinaca,1999,29(9):86-89.

YAO Minli, WANG Yilin, YIN Qinye. Direction finding for multiuser correlated signals based on spatial signature estimation in cyclic cumulant domain [C]∥Proc ISCAS'99.Piscataway, NJ, USA:IEEE, 1999: 443-446.

金梁. 基于时空特征结构的阵列信号处理与智能天线技术研究 [D].西安:西安交通大学电子与信息工程学院,1999.

张贤达.现代信号处理[M].北京:清华大学出版社,1994.

王永良,陈辉,彭应宁,等.空间谱估计理论与算法[M]. 北京:清华大学出版社,2004.

ROY R, KAILATH T. ESPRIT: a subspace rotation approach to estimation of parameters of cissoids in noise [J]. IEEE Trans on ASSP, 1986,34(10): 1340-1342.

姚敏立,金梁,殷勤业. 基于累积量的空间特征估计算法及其在智能天线中的应用[J]. 信号处理,2000,16(1): 58-62.

YAO Minli, JIN Liang, YIN Qinye. Spatial signature estimation algorithm with cumulant and its application in smart antenna system [J].Signal Processing,2000,16(1): 58-62.

姚敏立,金梁,殷勤业.空间特征的累量域估计算法与共信道相干源波达方向估计[J].西安交通大学学报,1999,33(5):17-28.

YAO Minli, JIN Liang, YIN Qinye. Spatial signature estimation algorithm in cumulant domain for direction finding of co-channel correlated signals [J].Journal of Xi'an Jiaotong University, 1999,33(5):17-28.

姚敏立,殷勤业.累量域高分辨率二维波达方向估计算法[J].西安交通大学学报,1999,33(1):15-18.

YAO Minli,YIN Qinye. High-resolution algorithm for two dimensional direction finding of non-Gaussian sources [J].Journal of Xi'an Jiaotong University,1999,33(1):15-18.

JENG S S, LIN H P, OKAMOTO G, et al. Multipath direction finding with subspace smoothing [C]∥Proc IEEE ICASSP. Piscataway, NJ, USA: IEEE,1997: 3485-3488.

张辉,葛临东,李蒙,等.多径环境中二维波达方向估计的子空间平滑算法[J]. 电子学报,2005,33(6): 1077-1080.

ZHANG Hui, GE Lindong, LI Meng, et al. Multipath-2D direction finding with subspace smoothing algorithm [J]. Acta Electronica Sinaca,2005,33(6): 1077-1080.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Review of the Application of EBSILON Software in Combined Heat and Power System Optimization

Effects of Steam Addition on the Swirl Combustion and Emission Characteristics of Cracked Ammonia

Bi-Level Multi-Obj ective Optimization of a Wind-Solar Coupled Hydrogen Production System Based on the Synergy of Hybrid Electrolyzer Arrays

Sensitivity Analysis of Foil Geometrical Parameters for the Third-Generation CO2 Gas Foil Bearings Based on Design of Experiments Method

Effects of Expansion Angle Crater Film Hole on the Film Cooling Characteristics of a Double-Wall Structure

Related Author

No data

Related Institution

No data

⁰