时频混合分步波束形成试验研究

Experimental study of fractional beamforming for time-frequency mix

讨论密集间距阵分步波束形成时频混合处理模型和拖曳试验结果、试验结果证明理论模型正确，可以工程实现．当子阵接收的背景噪声中流噪声是占优势的分量时，对试验子阵系统和相同条件下传统的半波长间距阵相比，系统性能指数提高了１７ｄＢ左右。

The model of time--frequency mired processing and the towing experimental results arediscussed in the paper for the fractional beamforming of a dense spacing array. The results show thatthe theoretical model is correct and it can be realized in the engineering mode. The Performance Figureof the experimental sub--array system is increased by about 17 dB ill comparison with that of traditionalarray with half Wavelength spacing between elements under same conditions, when the flow noise is adominant component in the background noise received by a sub-array.