2-D DOA Estimation of Wideband LFM Signal in Fractional Fourier Domain

Yanhong Zhang Yanhong Zhang,Lin Qi Lin Qi,Shouyi Yang Shouyi Yang,Xiaomin Mu Xiaomin Mu

doi:10.1109/icicic.2006.376

2-D DOA Estimation of Wideband LFM Signal in Fractional Fourier Domain

Yanhong Zhang Yanhong Zhang, Lin Qi Lin Qi + Show 2 more

https://doi.org/10.1109/icicic.2006.376

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Publication Date: Aug 30, 2006

Citations: 7

Affiliation: Zhengzhou University

#Fractional Fourier Domain #Signal In Fractional Fourier Domain + Show 8 more

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Abstract

In allusion to non-stationary wideband LFM signals, an algorithm of direction-of-arrival (DOA) estimation based on fractional Fourier transform (FRFT) is proposed. In this method, the observed signals are first transformed to fractional Fourier (FRF) domain, and by the unique concentration signature of signal, the FRF domain steering vector is defined, then, in the corresponding FRF domain, the two-dimension (2-D) angles estimating of the LFM signal is implemented by using DOA matrix algorithm. Theoretical analyses and simulation results show that, this algorithm can obtain good angle estimation performance with a low computation complexity.

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