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阵列的幅相误差和互耦效应严重影响了超分辨谱估计的性能,需要进行校正。由于均匀线阵的特殊结构,目前所采用的自校正算法呈现了多解性。分析了对均匀线阵进行自校正出现多解性的原因,在此基础上,提出了先用经典自校正算法实现互耦误差和幅度误差校正,然后用约束条件解决相位误差估计模糊的校正算法,该算法很好地解决了自校正算法对均匀线阵出现的多解性问题;利用仿真方法,验证了算法的性能。
The amplitude and phase errors and the mutual coupling effect of the array seriously affect the performance of the super-resolution spectral estimation and need to be corrected. Due to the special structure of a uniform linear array, the present self-correction algorithm presents multiple solutions. Based on the above analysis, the paper proposes a method to correct the mutual coupling error and the amplitude error by the classical self-tuning algorithm, and then uses the constraint condition to solve the phase error estimation fuzzy correction algorithm , Which solves the problem of multi-solution to the uniform linear array by the self-tuning algorithm. The simulation results show the performance of the algorithm.