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文中利用空间平滑法,研究提高小快拍数条件下的自适应波束形成性能.由于采用子阵前后向平滑,等效地提高了快拍数,且显著地提高了小快拍数时的自适应波束形成性能.同时,考虑了对信号指向各子阵间的相位线性递增关系,可将子阵的自适应权值递推为全阵列的权,避免了子阵处理带来的孔径损失。计算机模拟验证了这些优点.
In this paper, the spatial smoothing method is used to improve the adaptive beamforming performance under the conditions of small fast beats. Since the smoothing before and after the sub-array is used, the number of fast beats is equivalently improved, and the number of self-adaptive Which can adapt the beamforming performance.At the same time, considering the increasing linearity of the phase between the signal sub-arrays, the adaptive weights of the sub-arrays can be recursed to the full array weights, avoiding the aperture loss caused by the sub-array processing. Computer simulations validate these advantages.