Title: The Possibility of Using Power Inversion Adaptive Arrays in High-Precision GNSS Receivers
Author(s): Hailong Xu, Xiaowei Cui, Wenyi Li, Mingquan Lu
Published in: Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017)
September 25 - 29, 2017
Oregon Convention Center
Portland, Oregon
Pages: 3573 - 3583
Cite this article: Xu, Hailong, Cui, Xiaowei, Li, Wenyi, Lu, Mingquan, "The Possibility of Using Power Inversion Adaptive Arrays in High-Precision GNSS Receivers," Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Portland, Oregon, September 2017, pp. 3573-3583.
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Abstract: Arming the global navigation satellite system (GNSS) receiver with an adaptive array employing the power inversion (PI) algorithm is an effective countermeasure to radio frequency (RF) interferences. It is also relatively easy to implement compared with beam-forming, because the directions of arrival (DOA) of the desired satellite signals are not necessary. Just as other anti-jamming adaptive array algorithms, PI is regarded as incompatible with high-precision applications because of the induced measurement bias. However, it is shown in this paper through both mathematical derivation and computer simulation that, whether a PI adaptive array will meet the high-precision requirements largely depends on the characteristics of the array elements. If the array perturbations due to the non-ideal factors of the antennas are small enough, it is possible to use a PI adaptive array in a high-precision receiver, thus achieving precision positioning and interference mitigation at the same time.