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Relevant bibliographies by topics / Antenna phase centre variation

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Journal articles

Academic literature on the topic 'Antenna phase centre variation'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Antenna phase centre variation"

1

Araszkiewicz, Andrzej, Damian Kiliszek, and Anna Podkowa. "Height Variation Depending on the Source of Antenna Phase Centre Corrections: LEIAR25.R3 Case Study." Sensors 19, no. 18 (2019): 4010. http://dx.doi.org/10.3390/s19184010.

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In this study, we compared two sets of antenna phase center corrections for groups of the same type of antenna mounted at the continuously operating global navigation satellite system (GNSS) reference stations. The first set involved type mean models provided by the International GNSS Service (release igs08), while the second set involved individual models developed by Geo++. Our goal was to check which set gave better results in the case of height estimation. The paper presents the differences between models and their impact on resulting height. Analyses showed that, in terms of the stability of the determined height, as well as its variability caused by increasing the facade mask, both models gave very similar results. Finally, we present a method for how to estimate the impact of differences in phase center corrections on height changes.

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2

Dawidowicz, Karol, Rafal Kazmierczak, and Krzysztof Swiatek. "SHORT STATIC GPS/GLONASS OBSERVATION PROCESSING IN THE CONTEXT OF ANTENNA PHASE CENTER VARIATION PROBLEM." Boletim de Ciências Geodésicas 21, no. 1 (2015): 213–30. http://dx.doi.org/10.1590/s1982-217020150001000014.

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So far, three methods have been developed to determine GNSS antenna phase center variations (PCV). For this reason, and because of some problems in introducing absolute models, there are presently three models of PCV receiver antennas (relative, absolute converted and absolute) and two satellite antennas (standard and absolute). Additionally, when simultaneously processing observations from different positioning systems (e.g. GPS and GLONASS), we can expect a further complication resulting from the different structure of signals and differences in satellite constellations. This paper aims at studying the height differences in short static GPS/GLONASS observation processing when different calibration models are used. The analysis was done using 3 days of GNSS data, collected with three different receivers and antennas, divided by half hour observation sessions. The results show that switching between relative and absolute PCV models may have a visible effect on height determination, particularly in high accuracy applications. The problem is especially important when mixed GPS/GLONASS observations are processed. The update of receiver antenna calibrations model from relative to absolute in our study (using LEIAT504GG, JAV_GRANT-G3T and TPSHIPER_PLUS antennas) induces a jump (depending on the measurement session) in the vertical component within to 1.3 cm (GPS-only solutions) or within 1.9 cm (GPS/GLONASS solutions).

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3

EL-Hattab, Ahmed I. "Influence of GPS antenna phase center variation on precise positioning." NRIAG Journal of Astronomy and Geophysics 2, no. 2 (2013): 272–77. http://dx.doi.org/10.1016/j.nrjag.2013.11.002.

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4

Krietemeyer, Andreas, Hans van der Marel, Nick van de Giesen, and Marie-Claire ten Veldhuis. "High Quality Zenith Tropospheric Delay Estimation Using a Low-Cost Dual-Frequency Receiver and Relative Antenna Calibration." Remote Sensing 12, no. 9 (2020): 1393. http://dx.doi.org/10.3390/rs12091393.

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The recent release of consumer-grade dual-frequency receivers sparked scientific interest into use of these cost-efficient devices for high precision positioning and tropospheric delay estimations. Previous analyses with low-cost single-frequency receivers showed promising results for the estimation of Zenith Tropospheric Delays (ZTDs). However, their application is limited by the need to account for the ionospheric delay. In this paper we investigate the potential of a low-cost dual-frequency receiver (U-blox ZED-F9P) in combination with a range of different quality antennas. We show that the receiver itself is very well capable of achieving high-quality ZTD estimations. The limiting factor is the quality of the receiving antenna. To improve the applicability of mass-market antennas, a relative antenna calibration is performed, and new absolute Antenna Exchange Format (ANTEX) entries are created using a geodetic antenna as base. The performance of ZTD estimation with the tested antennas is evaluated, with and without antenna Phase Center Variation (PCV) corrections, using Precise Point Positioning (PPP). Without applying PCVs for the low-cost antennas, the Root Mean Square Errors (RMSE) of the estimated ZTDs are between 15 mm and 24 mm. Using the newly generated PCVs, the RMSE is reduced significantly to about 4 mm, a level that is excellent for meteorological applications. The standard U-blox ANN-MB-00 patch antenna, with a circular ground plane, after correcting the phase pattern yields comparable results (0.47 mm bias and 4.02 mm RMSE) to those from geodetic quality antennas, providing an all-round low-cost solution. The relative antenna calibration method presented in this paper opens the way for wide-spread application of low-cost receiver and antennas.

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5

Wang, Chaochao, Gérard Lachapelle, and M. Elizabeth Cannon. "Development of an Integrated Low-Cost GPS/Rate Gyro System for Attitude Determination." Journal of Navigation 57, no. 1 (2004): 85–101. http://dx.doi.org/10.1017/s0373463303002583.

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The use of low-cost GPS receivers and antennas for attitude determination can significantly reduce the overall hardware system cost. Compared to the use of high performance GPS receivers, the carrier phase measurements from low-cost equipment are subject to additional carrier phase measurement errors, such as multipath, antenna phase centre variation and noise. These error sources, together with more frequent cycle slip occurrences, severely deteriorate attitude determination availability, reliability and accuracy performance. This paper presents the investigation of a low-cost GPS/gyro integration system for attitude determination. By employing the dead reckoning sensor type, the ambiguity search region can be specifically defined as a small cube to enhance the ambiguity resolution process. A Kalman filter is implemented to fuse the rate gyro data with GPS carrier phase measurements. The quality control system based on innovation sequences is used to identify cycle slip occurrences and incorrect inter-antenna vector solutions. The availability of the integrated system also improves with respect to the GPS standalone system since the attitude parameters can be estimated using the angular rate measurements from rate gyros during GPS outages. The low-cost hardware used to design and test the integrated system consists of CMC Allstar receivers with the OEM AT575-70 antennas and Murata ENV-05D-52 piezoelectric vibrating rate gyroscopes. Tests in the urban area demonstrated that the introduction of rate gyros in a GPS-based attitude determination system not only effectively decreased the noise level in the estimated attitude parameters but coasted the attitude output during GPS outages and also significantly improved the system reliability.

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6

Baghel, Amit Kumar, Shashank Kulkarni, and Sisir Kumar Nayak. "Parabolic profile pyramidal horn antenna with lower phase centre variation and 3 dB beamwidth in S‐band." IET Microwaves, Antennas & Propagation 13, no. 10 (2019): 1626–36. http://dx.doi.org/10.1049/iet-map.2018.5824.

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7

Willi, Daniel, Michael Meindl, Hui Xu, and Markus Rothacher. "GNSS antenna phase center variation calibration for attitude determination on short baselines." Navigation 65, no. 4 (2018): 643–54. http://dx.doi.org/10.1002/navi.273.

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8

Stępniak, Katarzyna, Paweł Wielgosz, and Radosław Baryła. "Field tests of L1 phase centre variation models of surveying-grade GPS antennas." Studia Geophysica et Geodaetica 59, no. 3 (2015): 394–408. http://dx.doi.org/10.1007/s11200-014-0250-6.

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9

Gu, Defeng, Yuwang Lai, Junhong Liu, Bing Ju, and Jia Tu. "Spaceborne GPS receiver antenna phase center offset and variation estimation for the Shiyan 3 satellite." Chinese Journal of Aeronautics 29, no. 5 (2016): 1335–44. http://dx.doi.org/10.1016/j.cja.2016.08.016.

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10

Li, Bin, Yong Luo, Xu Tan, Xiao Ning Zhang, and Jian Jun Wu. "Phase Distribution Analysis of Radiation Pattern of Multi-Beam Satellite Antenna Based on Offset Parabolic Reflector." Advanced Materials Research 846-847 (November 2013): 663–66. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.663.

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This paper focuses on GEO multi-beam satellite offset parabolic reflector antenna. In this paper, radiation fields generated by different feeds are derived, and phase radiation pattern is mainly discussed. It can be seen from the numerical results that when the feed is at the focal point of parabolic reflector, the beam has equal phase within beam service area. In addition, for offset feeds, phase changes slowly from beam center to beam boundary, and the variation is about 0.1 radian.

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