【摘要】 测向模糊和测向精度是阵列测向系统的重要性能指标,特别是在阵元间距与载波波长之比很大时,不同的阵列结构的测向模糊特性有明显的不同,通过对测向模糊的理论分析,利用MUSIC算法,在八元均匀园阵和七元均匀L阵及非均匀L阵的基础上,对测向系统进行了性能仿真。根据对这三个不同阵列的模糊性和测向精度的比较与分析,得出了具体阵列的设计方案。更多还原

【Abstract】 Ambiguity DOAs and the precision of the direction finding is an important criterion of the array-based direction finding system.When the ratio of distance of the array unit to the wavelength of the carrier wave is very large,the performance of Ambiguity DOAs is different in different array structures.In this paper,an analysis of the ambiguity and the precision of the array-based direction finding system is carried out.In addition,simulations have been done under these conditions of Uniform Circular Array with 8 sensors and Non-uniform L Array with 7 sensors and Uniform L Array with 7 sensors.According to comparison and the analysis of the result of the simulations,we obtained a scheme to design the configuration of the sensor array.更多还原