Antenna and RF front end calibration in a GNSS array receiver

Konovaltsev, Andriy; Cuntz, Manuel; Greda, Lukasz; Heckler, Marcos V. T.; Meurer, Michael

doi:10.1109/imws.2010.5440984

Cited by 20 publications

(13 citation statements)

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“…where is the distance of the adjacent antenna elements with half wavelength and is the propagation speed of signal or interference. According to (7), the steering vector of space-time domain can be written as…”

Section: Impact On Transfer Functionmentioning

confidence: 99%

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Impact on Antijamming Performance of Channel Mismatch in GNSS Antenna Arrays Receivers

Nie

Chen

et al. 2016

International Journal of Antennas and Propagation

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The performance of antijamming is limited by channel mismatch in global navigation satellite system (GNSS) antenna arrays receivers. Only when the amplitude and phase characteristics of each array channels are the same is the interference likely to be completely suppressed. This paper analyzes the impact on antijamming performance of channel mismatch. We built the model of channel mismatch and derived the impact on transfer function with space-time adaptive processor (STAP) of channel mismatch in theory. The impact factor of channel mismatch is proposed by the fuzzy transfer function, which could directly reflect the antijamming performance under channel mismatch. In addition, every characteristic in the channel mismatch model is analyzed. The analysis results show that the greatest impacts on antijamming performance are the range of amplitude wave and the group delay bias, while the influence of the number of amplitudes is next. As for the effect of group delay fluctuation is the smallest.

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Section: Impact On Transfer Functionmentioning

confidence: 99%

“…However, each array channel is composed of the low noise amplifier (LNA), analog filter, inverter, and other analog devices. The manufacturing errors and environmental and other factors could lead to inconsistencies of amplitude and phase in each channel, which would cause channel mismatch [7,8].…”

Section: Introductionmentioning

confidence: 99%

Impact on Antijamming Performance of Channel Mismatch in GNSS Antenna Arrays Receivers

Nie

Chen

et al. 2016

International Journal of Antennas and Propagation

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“…The first sets of measurements were presented in [7]. The measurements were carried out by using the set-up on the roof of a building in almost open sky conditions.…”

Section: B Measurement Set-upmentioning

confidence: 99%

“…Several measurement campaigns have been done in order to test these algorithms in a real world environment. The measurements were done with the 2x2 square antenna array [6,7] operating in GPS L1 band. The paper will presents the first results obtained by using SAGE algorithm with these real world measurement data.…”

Section: Introductionmentioning

confidence: 99%

Comparison of SAGE and classical multi-antenna algorithms for multipath mitigation in real-world environment

Rougerie

Konovaltsev

Cuntz

et al. 2010

2010 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC

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The performance of the Space Alternating Generalized Expectation Maximisation (SAGE) algorithm for multipath mitigation is assessed in this paper. Numerical simulations have already proven the potential of SAGE in navigation context, but practical aspects of the implementation of such a technique in a GNSS receiver are the topic for further investigation. In this paper, we will present the first results of SAGE implementation in a real world environment.

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“…Moreover, there are crosstalk-effects present due to substrate coupling, magnetic mutual coupling between inductors, magnetic and capacitive coupling between signal lines, imperfect ground and DC lines [9], coupling due to reflection as well as various spatial filters. Those imperfections were shown to vary over time due to mechanical and thermal effects and have to be compensated during runtime [10]. Therefore, those are termed time-varying contributions in the following.…”

Section: Introductionmentioning

confidence: 99%

Self-contained Antenna Crosstalk and Phase Offset Calibration by Jointly Solving the Attitude Estimation and Calibration Problem

Zorn¹,

Niestroj²,

Caizzone³

et al. 2017

Proceedings of the 30th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 201

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Soeren Zorn received his M.Sc. in electrical engineering from RWTH Aachen University in 2015. His bachelor and master thesis covered spoofing detection and mitigation. He is currently pursuing his Ph.D. at RWTH as a member of the Chair of Navigation. His research interests include multi antenna GNSS receivers, attitude and calibration estimation, robust interference and spoofing detection and mitigation. Michael Niestroj received his M.Sc. in electrical engineering from RWTH Aachen Universtiy in 2016. His master thesis covered attitude and calibration estimation for multi antenna GNSS receivers. He is currently prusuing his Ph.D. at RWTH Aachen University as a member of the chair of Navigation. His research is focused on calibration methods for GNSS multi antenna systems. Marius Brachvogel received his M.Sc. degree in electrical engineering from the RWTH Aachen University in 2016. Since then, he works as a research assistant for the Chair of Navigation. His current research includes GNSS interference and spoofing mitigation on distributed antenna systems. Stefano Caizzone rceived the M.Sc. in Telecommunications Engineering and the Ph.D. degree in Geoinformation from the University of Rome Toer Vergata, Italy, in 2009 and 2015, respectively. Since 2010, he is with the Antenna group of the Institute of Communications and Navigation of the German Aerospace Center (DLR), Wessling, Germany, where he is responsible for the development of innovative miniaturized antennas. His main research interests concern small antennas for RFIDs and satellite navigation, antenna arrays and grids with enhanced sensing capabilities, controlled radiation pattern antennas for robust satellite navigation and high-performance antenna design for precise satellite navigation. He is a participant of RTCA SC-159, active in the definition of minimum operational performance specifications for avionic GNSS equipment. Michael Meurer received the diploma in electrical engineering and the Ph.D. degree from the University of Kaiserslautern, Germany. After graduation, he joined the Research Group for Radio Communications at the Technical University of Kaiserslautern, Germany, as a senior key researcher, where he was involved in various international and national projects in the field of communications and navigation both as project coordinator and as technical contributor. From 2003 till 2013, Dr. Meurer was active as a senior lecturer and Associate Professor (PD) at the same university. Since 2006 Dr. Meurer is with the German Aerospace Centre (DLR), Institute of Communications and Navigation, where he is the director of the Department of Navigation and of the center of excellence for satellite navigation. In addition, since 2013 he is a professor of electrical engineering and director of the Chair of Navigation at the RWTH Aachen University. His current research interests include GNSS signals, GNSS receivers, interference and spoofing mitigation and navigation for safety-critical applications.

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Antenna and RF front end calibration in a GNSS array receiver

Cited by 20 publications

References 0 publications

Impact on Antijamming Performance of Channel Mismatch in GNSS Antenna Arrays Receivers

Impact on Antijamming Performance of Channel Mismatch in GNSS Antenna Arrays Receivers

Comparison of SAGE and classical multi-antenna algorithms for multipath mitigation in real-world environment

Self-contained Antenna Crosstalk and Phase Offset Calibration by Jointly Solving the Attitude Estimation and Calibration Problem

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