Effect of Mutual Coupling on the Performance of GPS AJ Antennas

Griffith, K.A.; Gupta, I.J.

doi:10.1002/j.2161-4296.2009.tb01752.x

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…Secondly, it is helpful to determine whether mutual coupling would affect the array performance. Many designers have endeavored to minimize the mutual coupling between elements as a guideline [16,17], while others have started to treat the array as a whole aperture [18,19]. There is still a lack of a criteria for judging the impact of mutual coupling on the capability of antenna arrays.…”

Section: Introductionmentioning

confidence: 99%

Impact of Element Pattern on the Performance of GNSS Power-Inversion Adaptive Arrays

Liu

et al. 2019

Electronics

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Power-inversion (PI) adaptive arrays are widely used in Global Navigation Satellite System (GNSS) receivers for interference mitigation. The effects of element patterns on the performance of PI adaptive arrays are investigated in this paper. To this end, the performance of adaptive arrays is investigated by Monte Carlo simulations, using CST Microwave Studio (Dassault Systems, Vélizy-Villacoublay, France) to calculate the radiation patterns of circular microstrip elements which are used to compute the adaptive weight and the adaptive array gain. It is shown that the performance of PI adaptive arrays is mainly dependent on the gain pattern of the reference antenna element rather than the non-reference elements because the algorithm essentially pushes the elements into an unequal position. Furthermore, the results show that the impact of mutual coupling on the performance of the antenna array can be associated with the radiation patterns of the reference element, which is helpful in selecting the optimum reference element without increasing computational complexity, especially for small GNSS arrays.

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Section: Introductionmentioning

confidence: 99%

Impact of Element Pattern on the Performance of GNSS Power-Inversion Adaptive Arrays

Liu

et al. 2019

Electronics

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“…Unlike other wireless applications, the quality of GNSS measurements after interference mitigation is important for high precision applications. However, antenna array processing induces distortions in code and carrier phase measurements in the presence of electronic interference [12,13,14,15,16,17,18,19,20,21,22,23]. The distortions in GNSS measurements caused by antenna array processing have been studied previously; for instance, [12,20] demonstrated distortions in carrier phase measurements with actual data and showed the dependency of distortions on satellite direction.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Multi-Antenna GNSS Receiver Performance under Jamming Attacks

Vagle

Broumandan

Lachapelle

2016

Sensors

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Although antenna array-based Global Navigation Satellite System (GNSS) receivers can be used to mitigate both narrowband and wideband electronic interference sources, measurement distortions induced by array processing methods are not suitable for high precision applications. The measurement distortions have an adverse effect on the carrier phase ambiguity resolution, affecting the navigation solution. Depending on the array attitude information availability and calibration parameters, different spatial processing methods can be implemented although they distort carrier phase measurements in some cases. This paper provides a detailed investigation of the effect of different array processing techniques on array-based GNSS receiver measurements and navigation performance. The main novelty of the paper is to provide a thorough analysis of array-based GNSS receivers employing different beamforming techniques from tracking to navigation solution. Two beamforming techniques, namely Power Minimization (PM) and Minimum Power Distortionless Response (MPDR), are being investigated. In the tracking domain, the carrier Doppler, Phase Lock Indicator (PLI), and Carrier-to-Noise Ratio (C/N0) are analyzed. Pseudorange and carrier phase measurement distortions and carrier phase position performance are also evaluated. Performance analyses results from simulated GNSS signals and field tests are provided.

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