Efficient dual-band planar array suitable to GALILEO

Valle, P.; Netti, A.; Zolesi, M.; Mizzoni, R.; Bandinelli, M.; Guidi, R.

doi:10.1109/eucap.2006.4584868

Cited by 8 publications

(4 citation statements)

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“…2) is similar to the antenna of GIOVE-A, the first Galileo test satellite. It comprises an array of 28 stacked patch elements symmetrically arranged in the four quadrants (Valle et al 2006).…”

Section: Foc Satellitesmentioning

confidence: 99%

Estimation of satellite antenna phase center offsets for Galileo

Steigenberger

Fritsche

Dach

et al. 2016

J Geod

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Satellite antenna phase center offsets for the Galileo In-Orbit Validation (IOV) and Full Operational Capability (FOC) satellites are estimated by two different analysis centers based on tracking data of a global GNSS network. The mean x-and y-offsets could be determined with a precision of a few centimeters. However, daily estimates of the x-offsets of the IOV satellites show pronounced systematic effects with a peak-to-peak amplitude of up to 70 cm that depend on the orbit model and the elevation of the Sun above the orbital plane. For the IOV y-offsets, no dependence on the orbit model exists but the scatter strongly depends on the elevation of the Sun above the orbital plane. In general, these systematic effects are significantly smaller for the FOC satellites. The z-offsets of the two analysis centers agree within the 10-15 cm level, and the time series do not show systematic effects. The application of an averaged Galileo satellite antenna model obtained from the two solutions results in a reduction of orbit day boundary discontinuities by up to one third-even if an independent software package is used.

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Section: Foc Satellitesmentioning

confidence: 99%

Estimation of satellite antenna phase center offsets for Galileo

Steigenberger

Fritsche

Dach

et al. 2016

J Geod

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“…While this information might not be fully representative of the final antenna design, it represents the best available public information and is expected to provide a suitable basis for the purpose of Galileo link-budget computations in GNSS visibility studies. Specifically, we made use of gain patterns for the lower and upper L-band presented in Monjas et al (2010) and Valle et al (2006) for IOV and FOC antennas, respectively. In the latter case, we assume that the "Enhanced NAVANT", which describes a follow-on design of the original GIOVE-A antenna and shares the same layout as the FOC antenna, is representative of the final FOC antenna.…”

Section: Transmit Antenna Gainmentioning

confidence: 99%

“…The latter are quite notable outside the main lobe region, but cannot be extracted from the graphical representation with adequate confidence. In the case of the lower L-band data, which refer either to E6 (Valle et al 2006) or an intermediate frequency between E5 and E6 (Monjas et al 2010), a scaling of sin(θ ) by the corresponding wavelength ratio was used to obtain the desired gain patterns at the E5 frequency.…”

Section: Transmit Antenna Gainmentioning

confidence: 99%

GNSS visibility and performance implications for the GENESIS mission

Montenbruck,

Steigenberger,

Thoelert

et al. 2023

J Geod

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The GENESIS mission prepared for launch in 2027 integrates the four space-geodetic techniques on a single spaceborne platform in medium Earth orbit. With its unique observations and alternative tie concepts, the mission aims to contribute to an improved accuracy and homogeneity of future terrestrial reference system realizations. To assess the expected contribution of Global Navigation Satellite System (GNSS) tracking, a comprehensive GNSS coverage analysis is performed based on detailed link-budget simulations, taking into account the best available gain patterns and signal-specific transmit power estimates derived for this work from measurements of a high-gain dish antenna. The benefit of different receiver antenna concepts for the GENESIS spacecraft is assessed, and it is demonstrated that a single-antenna system with either a nadir-looking or side-looking boresight is a viable alternative to the dual-antenna configuration considered in initial mission studies. Compared to terrestrial users and missions in low Earth orbit, GENESIS will collect GNSS signals transmitted at up to two times larger off-boresight angles. Only limited information on the actual transmit antenna phase patterns is presently available in this region, which hampers a quantitative assessment of the expected measurement and orbit determination accuracy. As such, a comprehensive release of manufacturer calibrations is encouraged for all blocks of GPS and Galileo satellites. In parallel, a need for in-flight characterization and calibration of the GNSS transmit antennas for off-boresight angles of up to $$30^\circ $$ 30 ∘ using observations of the GENESIS mission itself is expected. The impact of such calibrations on the overall quality of terrestrial reference frame parameters will need to be assessed in comprehensive simulations of global GNSS network solutions with joint processing of terrestrial and GENESIS GNSS observations.

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“…Specifically, we consider an isoflux pattern with an edge of coverage 12.2 EoC θ =°, as that required for a MEO (23616Km orbit) application [24]. Fig.…”

Section: Example (C): Isoflux Patternmentioning

confidence: 99%

Automatic Design of CP-RLSA Antennas

Albani

Mazzinghi

Freni

2012

IEEE Trans. Antennas Propagat.

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In this paper a procedure is presented, allowing the automatic design of circular polarized radial line slot antennas, with either pencil or shaped beam patterns. The antenna slot layout is refined by an optimization scheme based on the physical picture behind the working mechanism of the array. The validity of the approach has been proved by designing very efficient pencil beam antennas, either with maximum directivity or with controlled side lobe levels, and a shaped isoflux beam antenna. Index Terms-Antennaarrays, antenna optimization, moment methods, Radial Line Slot Array (RLSA) d λ apart, making an angle of 45±° with respect to the radial direction ( Fig. 1) [7]. Since the two slots in the

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Efficient dual-band planar array suitable to GALILEO

Cited by 8 publications

References 0 publications

Estimation of satellite antenna phase center offsets for Galileo

Estimation of satellite antenna phase center offsets for Galileo

GNSS visibility and performance implications for the GENESIS mission

Automatic Design of CP-RLSA Antennas

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