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Wind parameters measurement method based on co-prime array signal processing
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AI
DOI：10.1016/j.measurement.2022.110847.png)
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Abstract
En 中文
In this paper, a co-prime arc array structure with ultrasonic sensors is proposed, and the PM (propagator method) is applied in the field of wind parameters measurement. Two sub-arrays with co-prime properties are stacked to form a co-prime arc array. The array aperture is enlarged which avoids angle blur, improves the measurement accuracy of wind parameters. The propagator method is introduced to keep away from eigenvalue decomposition and estimate wind parameters directly. The estimation variance and CRB (Cramer Rao Bound) of wind parameters are obtained through theoretical analysis and simulation calculation. Simulation results show that the wind parameters measurement method based on co-prime array has lower estimation variance and higher measurement accuracy. A wind parameters measurement system with co-prime arc array was built, and the wind tunnel experiments validated the feasibility of the proposed method.
Keywords:
Co-prime arc array
Propagator method
Wind parameters measurement