基于MUSIC的陣列天線通道誤差的盲估計(jì)算法
The Blind Estimating Channel Error of Array Antenna Based on MUSIC
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摘要: 基于特征值分解的高分辨率DOA估計(jì)算法，在理想陣列條件下，性能很好，但是對(duì)噪聲擾動(dòng)和系統(tǒng)誤差都很敏感，噪聲擾動(dòng)和系統(tǒng)誤差會(huì)嚴(yán)重惡化這一類算法的性能，使其分辨率下降。該文提出一種基于MUSIC算法的盲估計(jì)方法，它僅僅需要在陣列周圍滿足遠(yuǎn)場(chǎng)條件的地方布置一個(gè)RF信號(hào)源，不需要知道信號(hào)源的方位角，就可以精確估計(jì)陣列天線的通道誤差。仿真結(jié)果證明，這種方法行之有效，而且效果比較理想。
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關(guān)鍵詞:
- DOA;陣列天線;空間特征;盲估計(jì)
Abstract: The high-resolution eigenstructure-based DOA estimation methods, such as MUSIC algorithm, have an excellent performance in ideal cases. Their performance is susceptible to noise perturbation and array error and degrade significantly when array is with error. An blind calibration method MUSIC-based is present in this paper. It need only one RF signal generator placed in the far-field without knowledge of DOA of incidence signal. Computer simulations illustrate that the method is effective and the calibration result is perfect. -
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