DOA Estimation for Far-Field Sources in Mixed Signals with Gain-Phase Error Array
Most of the super-resolution direction finding algorithms often require the accurate array manifold, but the gain-phase of the channels is often inconsistent in practical applications, which will lead to the estimation performance deterioration. Therefore, a new method for direction of arrival (DOA) estimation of far-field sources in mixed far-field and near-field signals with gain-phase error array is presented. First, fast Fourier transformation (FFT) is performed on the received data, then matrix transformation is used for simplifying the spectrum function, at last, DOA of far-field signals can be acquired by finding the roots of corresponding polynomial. There is no need to calibrate the array, simulations have shown that the proposed algorithm is effective.
KeywordsDirection of arrival Gain-phase error Far-field signals Near-field signals Wideband signals
I would like to thank Heilongjiang province ordinary college electronic engineering laboratory and post doctoral mobile stations of Heilongjiang University.
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