一种基于孤立源的近场互耦校准方法
A MUTUAL COUPLING CALIBRATION BASED ON A SINGLE SOURCE IN NEAR FIELD
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摘要: 本文提出一种适用于均匀线阵的互耦校准方法。该方法只需用一个位于近场的已知源即能实现有效校准,并可推广应用于均匀圆阵。同时,文中还讨论了校准源的位置误差对校准的影响,并分析了校准源应选取的最佳方位。最后,对新方法进行了仿真验证。
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关键词:
- 阵列信号处理; 校准; 互耦
Abstract: In this paper a mutual coupling calibration method suitable for uniform linear arrays is presented where only one known calibration source in the near field is necessary for effective calibration, which can be extended to the case of uniform circular arrays. The paper has also discussed the position error influence of the source on the calibration., and the optimum azimuth of the source is analized. Finally some simulation results are given to show the advantages of the new method. -
Roller C, Wasylkiwskyi W. Effects of mutual coupling on superr esolution DF in linear arrays. International Conference on Radar89, France: 1989, 556-562.[2]Weiss A J, Friedlander B. Mutual coupling effects on phaseonly direction finding. IEEE Trans. on AP, 1992, AP-40(5): 535-541.[3]Yeh C C, Leou M L, Ucci D R. Bearing estimations with mutual coupling present. IEEE Trans. on AP, 1989, AP-37(10): 1332-1335.[4]Friedlander B, Weiss A J. Direction finding in the presence of mutual coupling. IEEE Trans. on AP, 1991, AP-39(3): 273-284. -
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