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  1. (1) 西安电子科技大学 雷达信号处理重点实验室,陕西 西安 710071
    (2) 中国电子科技集团公司第54研究所,河北 石家庄 050081

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-06-20 发布日期:2006-06-20

A DF method for the improved correlative interferometer

LI Chun(1);LIAO Gui-sheng(1);LI Yan-bin(2)


  1. (1) Key Lab. of Radar Signal Processing, Xidian Univ., Xi′an 710071, China
    (2) 54th Institue of CETC, Shijiazhuang
    050081, China

  • Received:1900-01-01 Revised:1900-01-01 Online:2006-06-20 Published:2006-06-20

摘要: 提出一种改进的相关干涉仪测向处理方法.与直接使用相位差的常规相关干涉仪不同,它首先利用观测相位差的三角函数构造复数向量,再与天线的阵列流形进行拟合.由于三角函数在主值区间内及边界处都是连续的,因此该方法解决了相位差在主值区间边界处的跳变问题,从而完全消除了相位差跳变引起的数据拟合错误.改进的相关干涉仪不需要对相位进行去跳变处理,也不用进行长短基线的数据匹配,具有算法简单、性能稳健的特点.

关键词: 测向, 相关干涉仪, 阵列流形拟合

Abstract: A new estimation method, called the improved correlative interferometer, is presented for direction finding(DF).
Unlike the conventional correlative interferometer, which uses phase difference directly, it firstly employs trigonometric
functions of the measured phase difference to construct complex number vectors, and fits them to the array manifold which is
a continuum of response vectors of the antenna array. Since trigonometric functions are continuous at all points including
the boundary of the principal value region, this technique naturally solves the problem of the break of phase differences and
eliminates the data match error. Neither the unwrap of phase differences nor the data match among long baselines and short
ones is necessary, and thus the described approach is simple and robust. The results of numerial simulations and applied DF
systems show its validity and correctness.

Key words: direction finding(DF), correlative interferometer, array manifold fitting


  • TN957.52