Zobrazeno 1 - 10
of 47
pro vyhledávání: '"open-loop tracking"'
Publikováno v:
IEEE Access, Vol 8, Pp 122396-122404 (2020)
In order to track weak signals, GNSS receivers often use a frequency-locked loop (FLL) to track the carrier frequency. The performance of the frequency discriminator directly affects the receiver's signal tracking capability in the FLL. In weak signa
Externí odkaz:
https://doaj.org/article/3bced64ff46f4def83d2949bf90ffc26
Akademický článek
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Publikováno v:
فصلنامه علوم و فناوری فضایی, Vol 9, Iss 2, Pp 35-46 (2016)
One of the main challenges of the Open-Loop Signal Tracking method in GPS-RO space receivers, is Doppler prediction. Almost in all satellite communication systems, accurate carrier phase tracking under difficult conditions is depend on Doppler predic
Externí odkaz:
https://doaj.org/article/dd9cb14a197a44b188f207e995ee5ac9
Publikováno v:
Remote Sensing, Vol 12, Iss 24, p 4078 (2020)
Through Global Navigation Satellite System (GNSS) occultation measurement, the global ionosphere and atmosphere can be observed. When the navigation satellites’ signal passes through the lower atmosphere, the rapid change of the atmospheric refract
Externí odkaz:
https://doaj.org/article/501d4dc4a4494f9e805dc4ef408c1adc
Autor:
Nicolas Taburet, Lionel Zawadzki, Maxime Vayre, Denis Blumstein, Sophie Le Gac, François Boy, Matthias Raynal, Sylvie Labroue, Jean-François Crétaux, Pierre Femenias
Publikováno v:
Remote Sensing, Vol 12, Iss 18, p 3055 (2020)
The Sentinel-3A and Sentinel-3B satellites were launched, respectively, on 16 February 2016 and 25 April 2018 as part of the European Copernicus program. The Sentinel-3 Surface Topography Mission makes use of the altimeter instruments onboard Sentine
Externí odkaz:
https://doaj.org/article/a50821742d1d48b0891a442a5c409345
Publikováno v:
Sensors, Vol 15, Iss 9, Pp 21581-21612 (2015)
For vehicle positioning with Global Navigation Satellite System (GNSS) in urban areas, open-loop tracking shows better performance because of its high sensitivity and superior robustness against multipath. However, no previous study has focused on th
Externí odkaz:
https://doaj.org/article/996d73740fcd45bf8b1f9d63334d97e5
Publikováno v:
Sensors, Vol 18, Iss 1, p 119 (2018)
In Global Navigation Satellite System (GNSS) receivers, residual frequency estimation methods are traditionally applied in the synchronization block to reduce the transient time from acquisition to tracking, or they are used within the frequency esti
Externí odkaz:
https://doaj.org/article/b437e0659fb64e198774a23d2352c41b
Autor:
Pierre Féménias, François Boy, Matthias Raynal, Jean-François Crétaux, Denis Blumstein, Lionel Zawadzki, Nicolas Taburet, S. Labroue, Maxime Vayre, Sophie Le Gac
Publikováno v:
Remote Sensing, Vol 12, Iss 3055, p 3055 (2020)
Remote Sensing; Volume 12; Issue 18; Pages: 3055
Remote Sensing; Volume 12; Issue 18; Pages: 3055
The Sentinel-3A and Sentinel-3B satellites were launched, respectively, on 16 February 2016 and 25 April 2018 as part of the European Copernicus program. The Sentinel-3 Surface Topography Mission makes use of the altimeter instruments onboard Sentine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e50606cb60e44ffd7e74af5b9f670c76
https://www.mdpi.com/2072-4292/12/18/3055
https://www.mdpi.com/2072-4292/12/18/3055
Akademický článek
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Autor:
Jimoh, M. T., Aliyu, A. B.
Publikováno v:
ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT; Vol. 15 No. 4 (2019); 1049-1060
This paper provides the theoretical framework for the development of a pseudo-closed loop solar tracking system incorporating a microcontroller for a flat payload, where the outputs of the system (the slope and the azimuth angles of the payload) are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=issn15962490::d3a42aa45e3ee213b9411768fa7ccedc
https://www.azojete.com.ng/index.php/azojete/article/view/163
https://www.azojete.com.ng/index.php/azojete/article/view/163