DOA estimation method of spatial spectrum product for distributed coprime linear array
| Autor: | WANG Na, ZHAO Xuanzhi, LIU Zengli, ZHANG Jingjing |
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| Jazyk: | čínština |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Xibei Gongye Daxue Xuebao, Vol 39, Iss 5, Pp 1130-1138 (2021) |
| Druh dokumentu: | article |
| ISSN: | 1000-2758 2609-7125 79654754 |
| DOI: | 10.1051/jnwpu/20213951130 |
| Popis: | Coprime array isAsparse array composed of two uniform linear arrays with different spacing. When the two subarrays are inAnon-coherent distributed configuration, the direction of arrival (DOA) method based on the covariance analysis of the complete coprime array is no longer effective. According to the essential attribute that the distance between the elements of two subarrays can eliminate the angle ambiguity, based on the mathematical derivation, Aspatial spectral product DOA estimation method for incoherent distributed coprime arrays is proposed. Firstly, the spatial spectrum of each subarray is calculated by using the snapshot data of each subarray, and then the DOA estimation is realized by multiplying the spatial spectrum of each subarray. The simulation results show that the estimation accuracy and angle resolution of the present method are better than those of the traditional ambiguity resolution methods, and the estimation performance is good in the mutual coupling and low SNR environment, with the good adaptability and stability. Moreover, by using the flexibility of distributed array, the matching error is effectively solved through the rotation angle. |
| Databáze: | Directory of Open Access Journals |
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