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Haojie Zhang, Di Ren and Fanghua Jiang
In the past few years, non-geostationary orbit (NGSO) satellite communication constellations have regained popularity due to their conspicuous advantages. Nevertheless, with more NGSO satellites getting involved in communications, the spectrum resources ...
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Salvatore Sarno, Mariano Iervolino and Giancarmine Fasano
This paper proposes an approach for impulsive formation maintenance tailored to distributed synthetic aperture radar, i.e., a spaceborne system composed by several antennas working together to provide enhanced remote sensing capabilities. The analyzed co...
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Cristiano Pesaresi and Davide Pavia
This paper?which is contextualized in the discussion on the methodological pluralism and the main topics of medical geography, the complexity theory in geographies of health, the remaking of medical geography and ad hoc systems of data elaboration?focuse...
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Veton Hamza, Bojan Stopar, Toma? Ambro?ic and Oskar Sterle
Low-cost Global Navigation Satellite System (GNSS) receivers are currently used in various engineering applications. These low-cost devices are regarded as suitable sensors for applications in areas with a high risk of instrument damage. The main objecti...
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Piero Diego, Jianping Huang, Mirko Piersanti, Davide Badoni, Zhima Zeren, Rui Yan, Gianmaria Rebustini, Roberto Ammendola, Maurizio Candidi, Yi-Bing Guan, Jungang Lei, Giuseppe Masciantonio, Igor Bertello, Cristian De Santis, Pietro Ubertini, Xuhui Shen and Piergiorgio Picozza
The aim of this work is to validate the China Seismo-Electromagnetic Satellite 01 (CSES-01) Electric Field Detector (EFD) measurements through the analysis of the instrument response to various inputs: (a) geomagnetic field variations, (b) plasma density...
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Santi Concetto Pavone, Giorgio Sebastiano Mauro, Loreto Di Donato and Gino Sorbello
In this paper, we present the design and fabrication of two dual circularly polarized (CP) patch antennas that can be profitably used as feeders for reflector systems normally adopted for satellite applications. In the first part of the manuscript, we pr...
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Emilio Matricciani
According to altitude, the orbits of satellites constellations can be divided into geostationary Earth orbit (GEO), medium Earth orbit (MEO), and low Earth orbit (LEO) constellations. We propose to use a Walker star constellation with polar orbits, at an...
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Cheng Ke, Yanning Zheng and Shengli Wang
With the combination of multi-GNSS data, the precise-point positioning (PPP) technique can improve its accuracy, availability and reliability: Inter-system bias (ISB) is the non-negligible parameter in multi-GNSS PPP. To further enhance the performance o...
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Álvaro Somolinos, Rafael Florencio, Iván González and Felipe Cátedra
Multi-beams antennas are currently being used for direct broadcast satellite, personal communication satellite, military communication satellite, and high-speed internet applications. In this work, a circularly polarized (CP) multi-spot beam satellite pa...
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Peberlin Parulian Sitompul, Josaphat Tetuko Sri Sumantyo, Farohaji Kurniawan and Mohammad Nasucha
Radio beacons enable measurements of ionospheric radio scintillations and total electron content (TEC). These beacons transmit unmodulated, phase-coherent waves in S-band frequencies. Many satellite applications require circularly polarized (CP) wideband...
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