[关键词]
[摘要]
传统的测向算法只利用了信号的空间特性而没有利用其时间特性,而Gardner等人对循环平稳特性用于阵列测向的研究仅限于均匀线阵。文中提出一种利用均匀圆阵列估计循环平稳信号到达角的方法——Cyclic-RMUSIC算法,并与传统MUSIC算法进行了比较。仿真结果表明:该算法具有信号选择能力及抑制干扰、噪声的能力。此外,由于该算法利用了Root—MUSIC技术,在提高分辨性能的同时,极大地提高了计算效率。
[Key word]
[Abstract]
Conventional direction finding methods only exploit the spatial properties of the signals while ignoring the temperal properties. Unfortunately, Gardner et al. have researched the application of cyclostationarity for direction finding only in uniform linear army. In this paper, the Cyclic-RMUSIC algorithm is developed for azimuth estimation of the cyclostationary signal sources with uniform circular array. Comparison is made with the conventional MUSIC and Cyclic-MUSIC algorithms. Simulation results show that the proposed algorithm has signal selectivity and can suppress the interference and noise. Furthermore, by exploiting the Root-MUSIC technique, it can improve the computing efficiency significantly and provide a higher resolution.
[中图分类号]
TN957.51
[基金项目]