对称线阵的优化稀疏研究

Research on Synthesis of Symmetrical Thinned Linear Arrays

对稀疏率一定的稀疏线阵进行优化设计时,仅对孔径外边缘部分的阵元进行优化稀疏就能达到优化设计整个稀疏天线阵的目的。该文运用统计的方法对大量的最优对称稀疏线阵的阵元分布规律进行了分析和研究,提出一种对称稀疏线阵的布阵模型,经过分析和验证表明,利用该模型可以在保证优化性能的同时,有效地降低优化布阵算法的计算量,提高优化设计的效率。

For the synthesis of the symmetrical sparse linear arrays with some thinned rate, only taking some elements rounds the end of the aperture into account will have the same effect on the peak side lobe level with taking all the elements into account. Using statistical method ,the distribution characteristic of elements of many optimum thinned arrays are studied in this paper firstly, then a aperture release model is presented to synthesize the symmetrical thinned arrays, this model can reduce the computing burden and improve the efficiency in the optimization without expense of performance. Finally, some test and analysis to testify the advantages are presented.