Irregular Layout for a Satellite's Interferometric Array
We address the optimization problem of antenna placement on satellite-mounted interferometric synthetic-aperture instruments. In classic designs, the antennas on satellites are aligned regularly on the satellite's frame. Inspired by methods proposed for the placement of antennas in astronomical...
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| Veröffentlicht in: | IEEE journal of selected topics in applied earth observations and remote sensing 2021-01, Vol.14, p.9408-9423 |
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| container_title | IEEE journal of selected topics in applied earth observations and remote sensing |
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| creator | Krzakala, Paul Assouel, Amine Dunitz, Max Anterrieu, Eric Cabot, Francois Khazaal, Ali Rodriguez-Fernandez, Nemesio Rouge, Bernard Morel, Jean-Michel Kerr, Yann H. Colom, Miguel |
| description | We address the optimization problem of antenna placement on satellite-mounted interferometric synthetic-aperture instruments. In classic designs, the antennas on satellites are aligned regularly on the satellite's frame. Inspired by methods proposed for the placement of antennas in astronomical interferometers, such as ALMA or SKA, we explore irregular layouts and show that they are a valid alternative in terms of spatial resolution and reconstruction error. We formalize mathematically the optimization problem of irregularly placed antennas and we show that this kind of arrays can still be calibrated with the same methods used for regular arrays. Finally, this strategy is evaluated in the context of soil moisture and ocean salinity (SMOS) follow-up concepts, such as SMOS-HR (high resolution), for which the new optimized irregular configurations are compared to the regular ones. |
| doi_str_mv | 10.1109/JSTARS.2021.3109730 |
| format | Article |
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In classic designs, the antennas on satellites are aligned regularly on the satellite's frame. Inspired by methods proposed for the placement of antennas in astronomical interferometers, such as ALMA or SKA, we explore irregular layouts and show that they are a valid alternative in terms of spatial resolution and reconstruction error. We formalize mathematically the optimization problem of irregularly placed antennas and we show that this kind of arrays can still be calibrated with the same methods used for regular arrays. Finally, this strategy is evaluated in the context of soil moisture and ocean salinity (SMOS) follow-up concepts, such as SMOS-HR (high resolution), for which the new optimized irregular configurations are compared to the regular ones.</description><identifier>ISSN: 1939-1404</identifier><identifier>EISSN: 2151-1535</identifier><identifier>DOI: 10.1109/JSTARS.2021.3109730</identifier><identifier>CODEN: IJSTHZ</identifier><language>eng</language><publisher>Piscataway: IEEE</publisher><subject>Antenna arrays ; Antennas ; Arrays ; Cost function ; differentiation (mathematics) ; Fourier transforms ; Instruments ; Interferometry ; Layout ; Layouts ; Mathematics ; Methods ; Optimization ; Optimization and Control ; optimization methods ; Placement ; radio interferometry ; Radio telescopes ; Resolution ; Satellite antennas ; Satellite broadcasting ; Satellite-borne instruments ; Satellites ; Soil moisture ; Spatial discrimination ; Spatial resolution</subject><ispartof>IEEE journal of selected topics in applied earth observations and remote sensing, 2021-01, Vol.14, p.9408-9423</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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| source | DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Antenna arrays Antennas Arrays Cost function differentiation (mathematics) Fourier transforms Instruments Interferometry Layout Layouts Mathematics Methods Optimization Optimization and Control optimization methods Placement radio interferometry Radio telescopes Resolution Satellite antennas Satellite broadcasting Satellite-borne instruments Satellites Soil moisture Spatial discrimination Spatial resolution |
| title | Irregular Layout for a Satellite's Interferometric Array |
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