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Journal articles on the topic 'Antenna phase centre variation'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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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

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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 s

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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

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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 integr

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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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Shrestha, Sujan, Affan A. Baba, Syed Muzahir Abbas, Mohsen Asadnia, and Raheel M. Hashmi. "A Horn Antenna Covered with a 3D-Printed Metasurface for Gain Enhancement." Electronics 10, no. 2 (2021): 119. http://dx.doi.org/10.3390/electronics10020119.

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A simple metasurface integrated with horn antenna exhibiting wide bandwidth, covering full Ku-band using 3D printing is presented. It consists of a 3D-printed horn and a 3D-printed phase transformation surface placed at the horn aperture. Considering the non-uniform wavefront of 3D printed horn, the proposed 3D-printed phase transformation surface is configured by unit cells, consisting of a cube in the centre which is supported by perpendicular cylindrical rods from its sides. Placement of proposed surface helps to improve the field over the horn aperture, resulting in lower phase variations.

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Shrestha, Sujan, Affan A. Baba, Syed Muzahir Abbas, Mohsen Asadnia, and Raheel M. Hashmi. "A Horn Antenna Covered with a 3D-Printed Metasurface for Gain Enhancement." Electronics 10, no. 2 (2021): 119. http://dx.doi.org/10.3390/electronics10020119.

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A simple metasurface integrated with horn antenna exhibiting wide bandwidth, covering full Ku-band using 3D printing is presented. It consists of a 3D-printed horn and a 3D-printed phase transformation surface placed at the horn aperture. Considering the non-uniform wavefront of 3D printed horn, the proposed 3D-printed phase transformation surface is configured by unit cells, consisting of a cube in the centre which is supported by perpendicular cylindrical rods from its sides. Placement of proposed surface helps to improve the field over the horn aperture, resulting in lower phase variations.

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13

Yan, Xingyuan, Guanwen Huang, Qin Zhang, Le Wang, Zhiwei Qin, and Shichao Xie. "Estimation of the Antenna Phase Center Correction Model for the BeiDou-3 MEO Satellites." Remote Sensing 11, no. 23 (2019): 2850. http://dx.doi.org/10.3390/rs11232850.

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Satellite antenna phase center offsets (PCOs) and phase variations (PVs) for BeiDou-3 satellites are estimated based on the tracking data of the Multi-GNSS Experiment (MGEX) and the international GNSS Monitoring and Assessment System (iGMAS) network. However, when estimating the (PCOs) of BeiDou-3 medium Earth orbit (MEO) satellites by pure Extending the CODE Orbit Model (ECOM1), the x-offset estimations of the PCOs have a systematic variation of about 0.4 m with the elevation of the Sun above the orbital plane (β-angle). Thus, a priori box-wing solar radiation pressure (SRP) model of BeiDou-3

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14

Qiao, Zhaolong, Zhengpeng Wang, and Jungang Miao. "A High Channel Consistency Subarray of Plane-Wave Generators for 5G Base Station OTA Testing." Electronics 8, no. 10 (2019): 1148. http://dx.doi.org/10.3390/electronics8101148.

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A high channel consistency subarray of plane-wave generators (PWG) is described for fifth-generation (5G) base station (BS) over-the-air (OTA) testing. Firstly, the variation of the near field radiation characteristics of the subarray based on the feed amplitude and phase errors of the traditional power divider network is analyzed. The recommended amplitude and phase errors between channels are given. After that, a novel subarray which combines four pyramidal horn antennas and a compact 1:4 waveguide power divider is designed. The optimized perfectly symmetrical zigzag waveguide transmission l

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15

Mao, X., P. N. A. M. Visser, and J. van den IJssel. "Impact of GPS antenna phase center and code residual variation maps on orbit and baseline determination of GRACE." Advances in Space Research 59, no. 12 (2017): 2987–3002. http://dx.doi.org/10.1016/j.asr.2017.03.019.

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16

Ullah, Shahid, Cunjun Ruan, Muhammad Shahzad Sadiq, Tanveer Ul Haq, and Wenlong He. "High Efficient and Ultra Wide Band Monopole Antenna for Microwave Imaging and Communication Applications." Sensors 20, no. 1 (2019): 115. http://dx.doi.org/10.3390/s20010115.

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The paper presents a highly efficient, low cost, ultra-wideband, microstrip monopole antenna for microwave imaging and wireless communications applications. A new structure (z-shape, ultra-wideband (UWB) monopole) is designed, which consists of stepped meander lines to achieve super-wide bandwidth and high efficiency. Three steps are used to design the proposed structure for the purpose to achieve high efficiency and wide bandwidth. The antenna bandwidth is enhanced by varying the length of meander line slots, optimization of the feeding line and with the miniaturization of the ground width. T

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17

Liu, Mingming, Yunbin Yuan, Jikun Ou, and Yanju Chai. "Research on Attitude Models and Antenna Phase Center Correction for Jason-3 Satellite Orbit Determination." Sensors 19, no. 10 (2019): 2408. http://dx.doi.org/10.3390/s19102408.

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We focused on the researches of two models used for Jason-3 precise orbit determination (POD)—Jason-3 attitude modes and receiver phase center variation (PCV) model. A combined attitude mode for the Jason-3 satellite is designed based on experimental analysis used in some special cases, such as in the absence of quaternions or when inconvenient to use. We researched the linking of satellite attitude with antenna phase center. Specially, to verify the validity of the combined attitude, we analyzed the effects of different attitude modes on receiver phase center offset (PCO) estimation, PCO corr

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18

Araszkiewicz, Andrzej, and Damian Kiliszek. "Impact of Using GPS L2 Receiver Antenna Corrections for the Galileo E5a Frequency on Position Estimates." Sensors 20, no. 19 (2020): 5536. http://dx.doi.org/10.3390/s20195536.

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Knowledge of Global Navigation Satellite System (GNSS) antenna phase center variations plays a key role in precise positioning. Proper modeling is achieved by accessing antenna phase center corrections, which are determined in the calibration process. For most receiver antenna types, the International GNSS Service provides such corrections for two GPS and GLONASS carrier signals. In the case of Galileo, access to phase center corrections is difficult; only antennas calibrated in the anechoic chambers have available corrections for Galileo frequencies. Hence, in many of the studies, GPS-dedicat

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19

Jang, Jaegyu, and Changdon Kee. "Flight Test of Attitude Determination System using Multiple GPS Antennae." Journal of Navigation 59, no. 1 (2005): 119–33. http://dx.doi.org/10.1017/s0373463305003498.

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Small Unmanned Aerial Vehicles (UAVs) or inexpensive airplanes, such as a Cessna single engine aircraft, require a navigation system with a cheap, compact and precise sensor. Over the past ten years, GPS receivers have begun to be used as primary or alternative navigation sensors, because their use can significantly reduce the overall system cost. This paper describes a navigation system incorporating a velocity-based attitude estimation system with an attitude determination system using multiple antennae, which was implemented and tested using a UAV. The main objective was to obtain precise a

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20

Werlich, Renata Magda Cavalcante, Claudia Pereira Krueger, and Günter Schmitt. "A INFLUÊNCIA DOS PARÂMETROS DE CALIBRAÇÃO DE ANTENAS GPS NAS ALTITUDES ELIPSOIDAIS NO POSICIONAMENTO RELATIVO ESTÁTICO." Boletim de Ciências Geodésicas 21, no. 3 (2015): 532–47. http://dx.doi.org/10.1590/s1982-21702015000300030.

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Resumo:Alta acurácia em posicionamento GPS (Global Positioning System) é obtida através da eliminação parcial ou total dos erros presentes nas observações, particularmente os sistemáticos. Um deles é o erro de centro de fase da antena GPS. Ele é diretamente dependente da antena utilizada, visto que cada uma delas tem suas características próprias de construção e recepção do sinal GPS. Portanto, é de extrema importância o conhecimento individual do centro de fase da antena (Phase Center Offset- Phase Center Variation). Entre outros, existem parâmetros fornecidos pelo NGS (National Geodetic Surv

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21

Hsu, Bandar, and Yaulee Lee. "The Photosystem II Heterogeneity of Chlorophyll b-Deficient Mutants of Rice: a Fluorescence Induction Study." Functional Plant Biology 22, no. 2 (1995): 195. http://dx.doi.org/10.1071/pp9950195.

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It has been shown that the fluorescence induction curve of DCMU-poisoned spinach thylakoids can be resolved into three kinetically different phases, a rapid sigmoidal phase (�) followed by two slower exponential phases (β and γ), by using a mathematical analysis method previously described (Hsu, B. D., Lee, Y. S. and Jang, Y. R. (1989). Biochimica et Biophysica Acta 975, 44-49). There is evidence suggesting that the a-phase originates from the major 'normal' photosystem II (PSII) centres, while the β and γphases arise from the two minor groups of 'abnormal' PSII centres with low quantum effici

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22

Chen, Jenn-Shyong, Jian-Wu Lai, Hwa Chien, et al. "VHF Radar Observations of Sea Surface in the Northern Taiwan Strait." Journal of Atmospheric and Oceanic Technology 36, no. 2 (2019): 297–315. http://dx.doi.org/10.1175/jtech-d-18-0110.1.

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Abstract A VHF pulsed radar system was set up on the Taoyuan County seashore (24°57′58″N, 121°00′30″E; Taiwan) to observe the sea surface in the northern Taiwan Strait for the first time. The radar used a four-element, vertically polarized Yagi antenna to transmit the 52-MHz radar wave. The receiving linear array consists of four vertical dipole antennas that were located 3 m apart and attached with four independent and identical receivers. With the multichannel echoes, the direction of arrival (DOA) of the radar echoes were determined by using an optimization beamforming approach—the Capon me

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23

Bortolas, Elisa, Pedro R. Capelo, Tommaso Zana, et al. "Global torques and stochasticity as the drivers of massive black hole pairing in the young Universe." Monthly Notices of the Royal Astronomical Society 498, no. 3 (2020): 3601–15. http://dx.doi.org/10.1093/mnras/staa2628.

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ABSTRACT The forthcoming Laser Interferometer Space Antenna (LISA) will probe the population of coalescing massive black hole (MBH) binaries up to the onset of structure formation. Here, we simulate the galactic-scale pairing of ∼106 M⊙ MBHs in a typical, non-clumpy main-sequence galaxy embedded in a cosmological environment at z = 7–6. In order to increase our statistical sample, we adopt a strategy that allows us to follow the evolution of six secondary MBHs concomitantly. We find that the magnitude of the dynamical-friction-induced torques is significantly smaller than that of the large-sca

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24

Rothacher, Markus. "Comparison of Absolute and Relative Antenna Phase Center Variations." GPS Solutions 4, no. 4 (2001): 55–60. http://dx.doi.org/10.1007/pl00012867.

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25

Pradipta, Dhota, Dudy D. Wijaya, Heri Andreas, and Dina A. Sarsito. "The Effect of TLS Radome on GNSS Precise Positioning." E3S Web of Conferences 94 (2019): 03012. http://dx.doi.org/10.1051/e3sconf/20199403012.

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This article presents the results of a test carried out to check the usability of spherical TLS targets as GNSS antenna radomes (herein called TLS radomes). On different days, the survey was conducted using two GNSS antennas, one of them with a TLS radome. Measurements were made using 2 roof pillars on the rooftop as base-rover pillars with little obstruction. The measurements were carried out for approximately 1 hour in every scenario. The software used for data processing is MATLAB-based software and the raw data were processed using the double difference (DD) strategy to obtain optimal resu

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26

Li, Lixun, Baiyu Li, Huaming Chen, and Feixue Wang. "Phase Errors Simulation Analysis for GNSS Antenna in Multipath Environment." International Journal of Antennas and Propagation 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/962627.

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High-precision GNSS application requires the exact phase center calibration of antenna. Various methods are published to determine the locations of the phase center. In the outfield, when the phase errors that arose by multipath exceed the phase center variations (PCV) tolerance, the calibration values may be not useful. The objective of this paper is thus to evaluate the phase errors that arose by multipath signals. An improved model of antenna receiving signal is presented. The model consists of three main components: (1) an antenna model created by combination of right hand circular polariz

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27

Morescki Junior, Luiz Fernando Macedo, and Luiz Danilo Damasceno Ferreira. "Determinação dos coeficientes dos harmônicos esféricos para o cálculo dos parâmetros pcv e pco utilizando dados de programas comerciais de calibração." Boletim de Ciências Geodésicas 20, no. 2 (2014): 444–66. http://dx.doi.org/10.1590/s1982-21702014000200026.

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Erros provenientes do centro de fase da antena, conhecidos como PCV - Phase Center Variations - são considerados agentes limitadores da acurácia do posicionamento relativo GNSS e do Posicionamento por Ponto Preciso (PPP). As PCVs dependem da direção do sinal do satélite e podem ser modeladas por parâmetros determinados por calibração de antenas em que são utilizados programas específicos, como por exemplo Wasoft/Kalib. Alguns autores afirmam que os programas aplicam funções harmônicas esféricas para a modelagem dos parâmetros PCV, mas não informam quais coeficientes são adotados para que a mod

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28

Li, Jilu, Jose A. Vélez González, Carl Leuschen, et al. "Multi-channel and multi-polarization radar measurements around the NEEM site." Cryosphere 12, no. 8 (2018): 2689–705. http://dx.doi.org/10.5194/tc-12-2689-2018.

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Abstract. Ice properties inferred from multi-polarization measurements, such as birefringence and crystal orientation fabric (COF), can provide insight into ice strain, viscosity, and ice flow. In 2008, the Center for Remote Sensing of Ice Sheets (CReSIS) used a ground-based VHF (very high frequency) radar to take multi-channel and multi-polarization measurements around the NEEM (North Greenland Eemian Ice Drilling) site. The system operated with 30 MHz bandwidth at a center frequency of 150 MHz. This paper describes the radar system, antenna configurations, data collection, and processing and

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29

Schmid, R., and M. Rothacher. "Estimation of elevation-dependent satellite antenna phase center variations of GPS satellites." Journal of Geodesy 77, no. 7-8 (2003): 440–46. http://dx.doi.org/10.1007/s00190-003-0339-0.

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30

WÜBBENA, GERHARD, MARTIN SCHMITZ, FALKO MENGE, GÜNTER SEEBER, and CHRISTOF VÖLKSEN. "A New Approach for Field Calibration of Absolute GPS Antenna Phase Center Variations." Navigation 44, no. 2 (1997): 247–55. http://dx.doi.org/10.1002/j.2161-4296.1997.tb02346.x.

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31

W�bbena, Gerhard, Gerald Boettcher, and Martin Schmitz. "Tests of phase center variations of various GPS antennas, and some results." GPS Solutions 6, no. 1-2 (2002): 18–27. http://dx.doi.org/10.1007/s10291-002-0008-4.

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32

Kačmařík, Michal, Jan Douša, Florian Zus, et al. "Sensitivity of GNSS tropospheric gradients to processing options." Annales Geophysicae 37, no. 3 (2019): 429–46. http://dx.doi.org/10.5194/angeo-37-429-2019.

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Abstract. An analysis of processing settings impacts on estimated tropospheric gradients is presented. The study is based on the benchmark data set collected within the COST GNSS4SWEC action with observations from 430 Global Navigation Satellite Systems (GNSS) reference stations in central Europe for May and June 2013. Tropospheric gradients were estimated in eight different variants of GNSS data processing using precise point positioning (PPP) with the G-Nut/Tefnut software. The impacts of the gradient mapping function, elevation cut-off angle, GNSS constellation, observation elevation-depend

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33

Tranquilla, J. M., and S. R. Best. "Antenna phase centre movement in UHF radio positioning systems." Canadian Electrical Engineering Journal 12, no. 1 (1987): 11–18. http://dx.doi.org/10.1109/ceej.1987.6593619.

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34

Damini, A., B. Balaji, L. Shafai, and G. Haslam. "Novel multiple phase centre reflector antenna for GMTI radar." IEE Proceedings - Microwaves, Antennas and Propagation 151, no. 3 (2004): 199. http://dx.doi.org/10.1049/ip-map:20040339.

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35

Bock, H., A. Jäggi, U. Meyer, R. Dach, and G. Beutler. "Impact of GPS antenna phase center variations on precise orbits of the GOCE satellite." Advances in Space Research 47, no. 11 (2011): 1885–93. http://dx.doi.org/10.1016/j.asr.2011.01.017.

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36

Zhalilo, A. A., A. A. Zhelanov, D. A. Shelkovenkov, and V. M. Shokalo. "The accuracy estimation of GPS/GNSS antennas calibration of phase centre and its variations." Kosmìčna nauka ì tehnologìâ 14, no. 4 (2008): 39–52. http://dx.doi.org/10.15407/knit2008.04.039.

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37

Cao, Kejin, Lei Wang, Bao Li, and Hengchao Ma. "A Real-Time Phase Center Variation Compensation Algorithm for the Anti-Jamming GNSS Antennas." IEEE Access 8 (2020): 128705–15. http://dx.doi.org/10.1109/access.2020.3006627.

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38

Dawidowicz, Karol. "Antenna Phase Center Variations Corrections in Processing of Gps Observations with Use of Commercial Software." Technical Sciences 13, no. -1 (2010): 120–32. http://dx.doi.org/10.2478/v10022-010-0012-9.

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39

Qu, Ziyang, Jing Guo, and Qile Zhao. "Phase Center Corrections for BDS IGSO and MEO Satellites in IGb14 and IGSR3 Frame." Remote Sensing 13, no. 4 (2021): 745. http://dx.doi.org/10.3390/rs13040745.

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As pre-launch antenna calibrations are not available for GPS and GLONASS satellites, the high correlation between the terrestrial scale and phase center offset (PCO) prevents a reliable estimation of the terrestrial scale with GNSS (Global Navigation Satellite System) technology. Fortunately, the ground calibrated PCO values for Galileo, BeiDou navigation satellite system (BDS), and QZSS have been released, making a reliable estimation of the terrestrial scale with GNSS possible. In the third reprocess (repro3) of International GNSS Service (IGS), the terrestrial scale derived with Galileo, ha

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40

Jäger, Marc, Rolf Scheiber, and Andreas Reigber. "Robust, Model-Based External Calibration of Multi-Channel Airborne SAR Sensors Using Range Compressed Raw Data." Remote Sensing 11, no. 22 (2019): 2674. http://dx.doi.org/10.3390/rs11222674.

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The paper describes a method for the accurate calibration of multi-channel SAR instruments, such as those required to support SAR polarimetry, single-pass interferometry and digital beam-forming (DBF), on the basis of dedicated SAR acquisitions containing reference targets with known properties. Unlike conventional approaches, the method is based entirely on the analysis of range-compressed raw data. It leverages the pulse-by-pulse analysis of amplitude, phase and delay variations observed within the range histories of reference targets to fully characterize and correct propagation direction d

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41

Jarlemark, Per, Ragne Emardson, Jan Johansson, and Gunnar Elgered. "Ground-Based GPS for Validation of Climate Models: The Impact of Satellite Antenna Phase Center Variations." IEEE Transactions on Geoscience and Remote Sensing 48, no. 10 (2010): 3847–54. http://dx.doi.org/10.1109/tgrs.2010.2049114.

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42

Ortiz de Galisteo, J. P., C. Toledano, V. Cachorro, and B. Torres. "Improvement in PWV estimation from GPS due to the absolute calibration of antenna phase center variations." GPS Solutions 14, no. 4 (2010): 389–95. http://dx.doi.org/10.1007/s10291-010-0163-y.

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Arezoomand, Afsaneh Saee, Mohammad Naser‐ Moghadasi, Iraj Arghand, Payam Jahangiri, and Ferdows B. Zarrabi. "Photonic band gap implementation for phase centre controlling in Vivaldi antenna." IET Microwaves, Antennas & Propagation 11, no. 13 (2017): 1880–86. http://dx.doi.org/10.1049/iet-map.2017.0010.

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44

Beeckman, P. A. "Analysis of phase errors in antenna-measurements applications to phase-pattern corrections and phase-centre determination." IEE Proceedings H Microwaves, Antennas and Propagation 132, no. 6 (1985): 391. http://dx.doi.org/10.1049/ip-h-2.1985.0069.

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45

Lawrence, Daniel E. "Antenna Insertion Phase Variation With Polarization and Methods for Compensation." IEEE Transactions on Antennas and Propagation 62, no. 11 (2014): 5715–22. http://dx.doi.org/10.1109/tap.2014.2355853.

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Takacs, Alexandru, Hervé Aubert, Daniel Belot, and Hubert Diez. "Miniaturisation of quadrifilar helical antenna: impact on efficiency and phase centre position." IET Microwaves, Antennas & Propagation 7, no. 3 (2013): 202–7. http://dx.doi.org/10.1049/iet-map.2012.0416.

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Milijić, Marija R., Aleksandar D. Nešić, Bratislav D. Milovanović, and Dušan A. Nešić. "Printed Antenna Array with Flat-Top Radiation Pattern." Frequenz 72, no. 5-6 (2018): 173–80. http://dx.doi.org/10.1515/freq-2016-0249.

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AbstractA printed antenna array consisting of 10 wideband symmetrical pentagonal dipoles is presented. The feed network of impedance transformers is employed to provide appropriate amplitude and phase distribution necessary to obtain flat top beam pattern. The measured results demonstrate excellent radiation characteristics including 38° flat gain region with maximum ripple of 3.5 dB at the centre frequency. Furthermore, the proposed antenna that is placed in corner reflector with angle of 60° has good gain (17 dBi) and side lobe suppression (18.9 dB). Although it is designed at the centre fre

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Inam, M., and M. Y. Ismail. "Analytical Model and Practicle Validation of Phase Variation of Reflect Array Antenna." Procedia Engineering 53 (2013): 225–32. http://dx.doi.org/10.1016/j.proeng.2013.02.030.

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Liu, Zejun, Lan Du, Yongxing Zhu, Zhihan Qian, Jinqing Wang, and Shiguang Liang. "Investigation on GEO satellite orbit determination based on CEI measurements of short baselines." Journal of Navigation 72, no. 06 (2019): 1585–601. http://dx.doi.org/10.1017/s0373463319000249.

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Connected-Element Interferometry (CEI) is a technique for measuring the phase delay of difference of Time Of Arrival (TOA) of a downlink radio signal to two antennae on a short baseline. This technique can use an atomic clock for time-frequency transmission and achieve intermediate accuracy angular tracking. Owing to the relatively short length of the baseline, the passive reception mode, and near real-time operation, CEI can be used to continuously monitor the orbit variations of both cooperative and non-cooperative satellites. In this paper, a small-scale CEI system of two orthogonal baselin

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Barès, C., C. Brousseau, L. Le Coq, and A. Bourdillon. "Effect of antenna phase centre displacement on FM-CW measurements: application to radar system." Electronics Letters 39, no. 11 (2003): 867. http://dx.doi.org/10.1049/el:20030556.

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