Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Gerardo Allende-Alba"'
Publikováno v:
Navigation, Vol 69, Iss 3 (2022)
For GNSS signal power monitoring systems, the characterization of satellite antennas plays an important role. Recently, gain pattern reconstructions of Galileo satellite antennas have been obtained using single-station observations. However, due to t
Externí odkaz:
https://doaj.org/article/9e31670de17343859df22547aa7df8e0
Publikováno v:
Proceedings of the 2023 International Technical Meeting of The Institute of Navigation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7128b7edd6f17d3ea4a5c1ad5ba0abf
https://doi.org/10.33012/2023.18649
https://doi.org/10.33012/2023.18649
Autor:
Gerardo Allende-Alba, Ivan E. Villalon-Turrubiates, Luis E. González-Jiménez, Raul A. Garcia-Huerta
Publikováno v:
IGARSS
The diverse and rapidly growing number of low-cost systems dedicated to the surveying of land, oceans and agricultural ecosystems, require affordable sensors and processing units. Typical applications of these systems rely on the estimation of their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1493ce341c8b9acffdb5e8691b109f6
https://doi.org/10.1109/igarss39084.2020.9324733
https://doi.org/10.1109/igarss39084.2020.9324733
Autor:
Steffen Thoelert, Gerardo Allende-Alba
Publikováno v:
GPS Solutions. 24
The importance of having high levels of reliability in Global Navigation Satellite Systems (GNSS) signals has increased gradually in recent years. Among other factors, evaluating the available power and its spatial characteristics at the user locatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc3d84b8a7397cf142d21fa90786a5c2
https://doi.org/10.1007/s10291-020-00991-2
https://doi.org/10.1007/s10291-020-00991-2
All GLONASS satellites transmit navigation signals in the L1 and L2 frequency band whereas newer generations (M+ and K1) also utilize the L3 band. Previous studies have shown that the transmit power in the individual frequency bands can significantly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d6c2f509b9cc3ebb5ce49e116083cf4
https://doi.org/10.5194/egusphere-egu2020-6685
https://doi.org/10.5194/egusphere-egu2020-6685
Publikováno v:
Navigation. 65:15-24
This paper presents an overview of the SAOCOM-CS synthetic aperture radar (SAR) interferometry mission and the use of GPS/GNSS for precise orbit and baseline determination. Compared to X-band SAR interferometry missions, the use L-band SAR in SAOCOM-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::463351a0811d1d22f439253616ee9bd9
https://doi.org/10.1002/navi.216
https://doi.org/10.1002/navi.216
Autor:
Steffen Thoelert, Gerardo Allende-Alba
Publikováno v:
GPS Solutions. 24
Monitoring the quality of global navigation satellite system (GNSS) signals is of primary importance for a variety of applications requiring high levels of robustness, reliability and integrity. A key element in the signal quality verification is the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d59f911fc60873340f9eb456edab8d8b
https://doi.org/10.1007/s10291-019-0937-9
https://doi.org/10.1007/s10291-019-0937-9
Autor:
Gerardo Allende-Alba, Ivan E. Villalon-Turrubiates, Raul A. Garcia-Huerta, Luis E. GonzcHez-Jimenez
Publikováno v:
IGARSS
The number of applications that use low-cost global positioning system (GPS) receivers have dramatically increased over the years in the scientific, military and civil fields. The accuracy in the position estimation of these low-cost GPS receivers is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f5187a55cf6ad0500a75618c285ce43
https://doi.org/10.1109/igarss.2019.8899767
https://doi.org/10.1109/igarss.2019.8899767
Publikováno v:
GPS Solutions. 22
In recent years, differential carrier phase-based relative positioning (or “baseline determination”) with precision at the millimeter and submillimeter levels has been demonstrated for the GRACE, TanDEM-X and Swarm missions in offline processing.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1beb6adc20ac137fe4ef73ae327c72b4
https://doi.org/10.1007/s10291-018-0734-x
https://doi.org/10.1007/s10291-018-0734-x
Autor:
Gerardo Allende-Alba, Zhengming Wang, Thomas A. Herring, Bing Ju, Oliver Montenbruck, Defeng Gu
Publikováno v:
Springer Berlin Heidelberg
Orbital maneuvers are usually performed as needed for low earth orbiters to maintain a predefined trajectory or formation-flying configuration. To avoid unexpected discontinuities and to connect pre- and post-maneuver arcs with a minimal set of param
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dba71640e210f34e96491eabbca2a4e4
https://doi.org/10.1007/s10291-015-0505-x
https://doi.org/10.1007/s10291-015-0505-x