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High Precision Fast Direction-of-Arrival Estimation Method for Planar Array
  • +3
  • Shuai Li,
  • Lei Li,
  • Yihao Song,
  • Ming Li,
  • Jie Ren,
  • Wenting Jiang
Shuai Li
China Academy of Space Technology
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Lei Li
The Chinese University of Hong Kong - Shenzhen
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Yihao Song
China Academy of Space Technology
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Ming Li
China Academy of Space Technology
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Jie Ren
China Academy of Space Technology
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Wenting Jiang
China Academy of Space Technology
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Abstract

The multiple signal classification (MUSIC) method for direction-of-arrival (DOA) estimation is widely applied in practical scenarios. However, the MUSIC method with planar array requires two-dimensional (2D) on-grid spectrum searches, which would lead to the grid mismatch and high computational complexity. Therefore, a high precision fast DOA estimation method for planar array is proposed. In the proposed method, a two-stage grid search approach over the 2D spectrum is firstly applied to obtain a quick coarse estimation of DOA. Then the estimation of higher precision is achieved via a quadratic surface fitting method. Simulation results verified the effectiveness of the proposed method.