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一般阵列误差情况下信号二维方向角和多普勒频率的联合估计
引用本文:陶建武,石要武,常文秀.一般阵列误差情况下信号二维方向角和多普勒频率的联合估计[J].高技术通讯,2003,13(2):10-14.
作者姓名:陶建武  石要武  常文秀
作者单位:1. 空军第二航空学院,长春,130022
2. 吉林大学通讯学院,长春,130025
基金项目:国家自然科学基金 ( 6 9872 0 12 )资助项目。
摘    要:针对平面阵列,推导出基于一般阵列误差模型的信号时空DOA矩阵,采用总体最小二乘法(TLS)估计出多个信号的方位角。俯仰角和多普勒频率,解决了大多数估计算法的性能因阵列误差而严重下降和“频率兼并”问题。此算法对噪声不敏感,不需进行谱峰搜索,仿真结果表明了此算法的有效性。

关 键 词:阵列误差  二维方向角  时空DOA矩阵  总体最小二乘  阵列信号处理  多普勒频率  联合估计

Joint Estimation of 2D Angle and Doppler Frequency for Signals with General Array Error
Tao Jianwu,Shi Yaowu,Chang Wenxiu.Joint Estimation of 2D Angle and Doppler Frequency for Signals with General Array Error[J].High Technology Letters,2003,13(2):10-14.
Authors:Tao Jianwu  Shi Yaowu  Chang Wenxiu
Affiliation:Tao Jianwu,Shi Yaowu*,Chang Wenxiu*
Abstract:We proposed a method of estimating 2D angle and Doppler frequency of signal with the general array error model. The space-time DOA matrix of signals was deduced. The azimuths, elevations and Doppler frequencies of signals with unknown array manifold due to uncertainties of array elements were calculated by total least squares (TLS). The method can resolve these problems, i.e. the performance of estimate algorithm is greatly decreased due to the general array error, and the 2D angle of multiple signals with the same Doppler frequency can not be estimated. The Gaussian noise in sources is efficiently suppressed. The estimations of azimuths, elevations and Doppler frequencies are automatically paired without spectral search. Simulations are presented to show the capabilities of this method.
Keywords:Array error  Estimate of 2D angle and Doppler frequency  Space-time DOA matrix  Total least squares (TLS)
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