Simple and Effective GNSS Spatial Processing Using a Low-Cost Compact Antenna Array

被引:6
|
作者
Marranghelli, Ezequiel A. [1 ]
Lopez La Valle, Ramon [1 ]
Roncagliolo, Pedro A. [1 ]
机构
[1] Univ Nacl La Plata, UIDET SENyT, Fac Ingn, Dept Electrotecnia, RA-1900 La Plata, Argentina
关键词
Antenna arrays; Array signal processing; Global navigation satellite system; Microstrip antenna arrays; Correlation; Phased arrays; Transmission line matrix methods; Compact antenna array; global navigation satellite system (GNSS);
D O I
10.1109/TAES.2021.3082669
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
A compact planar four-element antenna array that can be used to improve the robustness and accuracy in applications of satellite-based navigation systems that require simple, low-cost, lightweight, and efficient antenna solutions is proposed in this article.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 x 14 cm single-layer microstrip antenna array for the GNSS L1/E1-bands that achieves a 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.
引用
收藏
页码:3479 / 3491
页数:13
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