Simple and Effective GNSS Spatial Processing Using a Low-Cost Compact Antenna Array
A compact planar four-element antenna array that can be used to improve robustness and accuracy in applications of satellite-based navigation systems which require simple, low-cost, lightweight but also efficient antenna solutions is proposed. By introducing an orthonormal transformation in the digi...
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| Autores principales: | , , |
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| Formato: | Articulo Preprint |
| Lenguaje: | Inglés |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126480 |
| Aporte de: |
| Sumario: | A compact planar four-element antenna array that can be used to improve robustness and accuracy in applications of satellite-based navigation systems which require simple, low-cost, lightweight but also efficient antenna solutions is proposed. By introducing an orthonormal transformation in the digital signal processing stage, it is possible to simplify the effect of the distorted in-situ antenna radiation patterns obtaining an equivalent almost ideal phased array response. The actual prototype designed under this concept is a 14 cm \times 14 cm single layer microstrip antenna array for the GNSS L1/E1-bands that achieves good total antenna efficiency without employing any additional matching/decoupling stage. Promising results obtained through numerical simulations and on-field experiments showing effective direction of arrival estimations and mitigation of radio frequency interferences with simple spatial processing algorithms applied after the proposed signal transformation are presented. |
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