短基线高精度测向算法及实现

An algorism and realize of DF with short base-line and high performance

传统的相关干涉仪测向技术由于受来波波长约束,天线尺寸无法做到小型化要求,在工程应用中有其局限性,本文提出一种利用幅相信息对来波进行测向的算法,各天线随来波方位不同具有不同的幅度与相位比值,根据幅度,相位信息形成联合信息向量进行测向,缩小天线尺寸,提高测向精度。试验结果表明,此算法获得的测向精度相比于传统干涉仪测向系统有了明显的提高,同时,有效缩减了所需的天线阵元基线长度。

Traditional direction finding(DF) method of correlative interferometer is limited by wave length,the size of the antenna array can not be satisfy the demand of engineering.this paper presents a method of DF using amplitude and phase message,antenna gets different ritio for amplitude and phase,use amplitude and phase to generate joint vector to direction finding,this method can reduce the size of antenna array and improve the precision.The results show that compared with tradional DF method,this method present by this paper can get more precision and use small size of antenna array.