Zobrazeno 1 - 10
of 405
pro vyhledávání: '"orbit prediction"'
Publikováno v:
Geo-spatial Information Science, Pp 1-15 (2024)
Almanac is an elegant design to help Global Navigation Satellite Systems (GNSS) signal acquisition, which has been adopted by all global satellite navigation systems. For the future low Earth orbit (LEO) navigation constellation, the almanac will be
Externí odkaz:
https://doaj.org/article/e991121cd5a64550a3c645cc91800ec3
Autor:
Sara Hamidian, Amir Reza Kosari
Publikováno v:
IEEE Access, Vol 12, Pp 60447-60466 (2024)
The primary objective of this study is to investigate the efficacy of Support Vector Machine (SVM) regression method to enhance the accuracy of Low Earth Orbit (LEO) space debris orbit prediction using the historical data. Principal Component Analysi
Externí odkaz:
https://doaj.org/article/a28fd5d31cdc41b59cca542a3dd3f227
Publikováno v:
Aerospace, Vol 11, Iss 9, p 712 (2024)
When photoelectric measuring equipment is used to track satellites, the extraction of the short-term or long-term target often fails because the target is weak, clouds block the target, and/or the sun’s angle is too small, resulting in the loss of
Externí odkaz:
https://doaj.org/article/3610228b84f04796a52dec117cbe1b43
Publikováno v:
Remote Sensing, Vol 16, Iss 13, p 2282 (2024)
The increasing proliferation of space debris, intermittent space incidents, and the rapid emergence of massive LEO satellite constellations pose significant threats to satellites in orbit. Ground-based optical observations play a crucial role in spac
Externí odkaz:
https://doaj.org/article/db8c759e8ddf40c19fd737e116e55c8b
Publikováno v:
Remote Sensing, Vol 16, Iss 13, p 2337 (2024)
The BeiDou Global Navigation Satellite System (BDS-3) provides real-time precise point positioning (PPP) service via B2b signals, offering real-time decimeter-level positioning for users in China and surrounding areas. However, common interruptions a
Externí odkaz:
https://doaj.org/article/c85de7875a3d40fda93821a413df9f97
Publikováno v:
Geo-spatial Information Science, Vol 26, Iss 1, Pp 16-30 (2023)
ABSTRACTThe quality of BeiDou Navigation Satellite System (BDS) Geostationary Earth Orbit (GEO) ultra-rapid products is unsatisfactory because GEO satellites are nearly stationary relative to ground stations. To optimize the quality of these ultra-ra
Externí odkaz:
https://doaj.org/article/7990292378fb48e1a9eb7f174bfbb9bd
Akademický článek
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Publikováno v:
Open Astronomy, Vol 31, Iss 1, Pp 229-243 (2022)
High-accuracy orbit prediction plays a crucial role in several aerospace applications, such as satellite navigation, orbital maneuver, space situational awareness, etc. The conventional methods of orbit prediction are usually based on dynamic models
Externí odkaz:
https://doaj.org/article/d0326a8f28bf45989e2e14761ca5fafe
Publikováno v:
Sensors, Vol 23, Iss 21, p 8993 (2023)
Atmospheric drag is an important influencing factor in precise orbit determination and the prediction of low-orbit space debris. It has received widespread attention. Currently, calculating atmospheric drag mainly relies on different atmospheric dens
Externí odkaz:
https://doaj.org/article/13ccb2d2f0504f028278049ee76d31bb